Osbornellus Affinis (Osborn) 226. Female 7Th Stern Ite, Ventral View. Osbornellus Castaneus N. Sp. 227. Same. Osbornellus Obscurus N

378

226 228

227

229 231

230

233

232

235

234 Osbornellus affinis (Osborn) 226. Female 7th s te rn ite , ventral view. Osbornellus castaneus n. sp. 227. Same. Osbornellus obscurus n. sp. 228. Same. Osbornellus flavibrunneus n. sp. 229. Same. Osbornellus colossus n. sp. 230. Same. Osbornellus b o realis DeLong and Mohr 231. Same. Osbornellus sticrmatus n. sp. 232. Same. Osbornellus sinuatus n. sp. 233. Same. Osbornellus angustatus DeLong 234. Same. Osbornellus fasclatus Metcalf 235. Same. Osbornellus crilvus n. sp. 236. Same. 376

214 215

217

218 219

220 221

222

223

224 225 Osbornellus fulvomaculatus (Osborn) 214. Female 7th s te rn ite , ventral view Osbornellus auerreroensls n. sp. 215. Same. Osbornellus tripartitus DeLong 216. Same. Osbornellus auronitens (Provancher) 217. Same. Osbornellus limosus DeLong 218. Same. Osbornellus rotundus Beamer 219. Same. Osbornellus vicinus Linnavuori and Heller 220. Same. Osbornellus hvalinus (Osborn) 221. Same. Osbornellus pulliqalbus n. sp. 222. Same. Osbornellus compressus Linnavuori 223. Same. Osbornellus oiroulus DeLong and Martinson 224. Same. Osbornellus reversus DeLong 225. Same. 374

206 207 208 209

212 213 8 210 211 373

Osbornellus crilvus n. sp. 206. Aedeagus, ventral view. 207. Same, lateral view. Osbornellus bimarcrinatus bimarqinatus (DeLong) 208. Aedeagus, ventral view. 209. Same, lateral view. Osbornellus bimarqinatus montanus Caldwell and Martorell 210. Aedeagus, ventral view (from Caldwell and Martorell 1952). 211. Same, lateral view (from Caldwell and Martorell 1952). Osbornellus multivittatus n. sp, 212. Aedeagus, ventral view. 213. Same, lateral view. 194 192 193 195

199 198 . 196 197

♦ 202 200 201

205 203 204 Osbornellus mexioanus (Osborn) 192. Aedeagus, ventral view. 193* Same, la te ra l view. Osbornellus infuscatus Linnavuori 194. Aedeagus, la te r a l view. Osbornellus alveus DeLong and Martinson 195. Aedeagus, v e n tra l view. 196. Same, la te ra l view. Osbornellus sinuatus n. sp. 197. Aedeagus, v e n tra l view. 198. Same, la te ra l view. Osbornellus imgustatus DeLong 199. Aedeagus, v e n tra l view. 200. Same, la te ra l view. Osbornellus crocus n. sp. « 201. Aedeagus, v e n tra l view. 202. Same, la te ra l view. 203. S ty le , ventral view. Osbornellus fasciatus Metcalf 204. Aedeagus, v e n tra l view. 205. Same, la te ra l view. 370

179 178 176 177

4 8

i\V 181 183 180 182 II

187 185 A 186 184 I

188 189 190 191 Osbornellus rubellus DeLong 176. Aedeagus, ventral view. 177. Same, lateral view. Osbornellus omani Beamer 178. Aedeagus, ventral view. 179. Same, lateral view. Osbornellus unus n. sp. 180. Aedeagus, ventral view. 181. Same, lateral view. Osbornellus stiomatus n. sp. 182. Aedeagus, ventral view. 183. Same, lateral view. Osbornellus leucosticrmatus n. sp. 184. Aedeagus, ventral view. 185. Same, lateral view. Osbornellus pallidus Beamer 186. Aedeagus, ventral view. 187. Same, lateral view. Osbornellus olarus Beamer 188. Aedeagus, ventral view. 189. Same, lateral view. Osbornellus flexuosus Linnavuori 190. Aedeagus, ventral view. 191. Same, lateral view. 368

168 166 167 169

171 172

170

174

173 175 Osbornellus scalaris (Van Duzee) 166. Aedeagus, lateral view. Osbornellus crrandis DeLong 167. Aedeagus, v en tral view. 168. Same, lateral view. Osbornellus remotus DeLong and Martinson 169. Aedeagus, v entral view. 170. Same, lateral view. Osbornellus spinosus DeLong 171. Aedeagus, ventral view. 172. Same, lateral view. 173. Pygofer, lateral view (spination omitted). Osbornellus rarus DeLong 174. Aedeagus, v en tral view. 175. Same, lateral view. * r 366 I

155 156 f) 154

158 160 161 159

164 162 163 165 Osbornellus oonsors (Uhler) 154. Aedeagus, lateral view. Osbornellus fumidus Beamer 155. Aedeagus, ventral view. 156. Same, lateral view. Osbornellus borealis DeLong and Mohr 157. Aedeagus, ventral view. 158. Same, lateral view. Osbornellus camptus n. sp. 159. Aedeagus, ventral view. 160. Same, lateral view. Osbornellus albocinctus DeLong 161. Aedeagus, ventral view. 162. Same, lateral view. Osbornellus lineatus Beamer 163. Aedeagus, ventral view. 164. Same, lateral view. Osbornellus scalaris (Vt< i Duzee) 165. Aedeagus, ventral view. 364

143

14 5 142 144

147 146 149 148

150 152 IS 151 153 Osbornellus icmavus Ball 142. Aedeagus, lateral view. Osbornellus apioatus DeLong 143. Aedeagus, lateral view (from DeLong 1941b). Osbornellus ohromatus n. sp. 144. Aedeagus, ventral view. 145. Same, lateral view. Osbornellus ritanus Ball 146. Aedeagus, ventral view. 147. Same, lateral view. Osbornellus cvrtooaulus n. sp. 148. Aedeagus, ventral view. 149. Same, lateral view. 150. Style, ventral view. Osbornellus appressus DeLong 151. Aedeagus, ventral view. 152. Same, lateral view. Osbornellus consors (Uhler) 153. Aedeagus, ventral view. 362

131 130 132 133

134 135 136 137

140 At> 138 139 ' ------1 141 Osbornellus spicatus Beamer 130. Aedeagus, ventral view. 131. Same, lateral view. Osbornellus corniqer Beamer 132. Aedeagus, ventral view. 133. Same, lateral view. Osbornellus bifasciatus Beamer 134. Aedeagus, ventral view. 135. Same, lateral view. Osbornellus tenuis Beamer 136. Aedeagus, v entral view. 137. Same, lateral view. Osbornellus aciicapitus n. sp. 138. Aedeagus, ventral view. 139. Same, lateral view. ■ Osbornellus albolineus DeLong 140. Aedeagus, lateral view (from DeLong 1941b). Osbornellus ignavus Ball 141. Aedeagus, ventral view. 360

123 122 121

125 126 124

127

128 129 Osbornellus lamellaris Linnavuori 121. Aedeagus, lateral view (from Linnavuori 19S9). Osbornellus alaudus DeLong 122. Aedeagus, ventral view. 123. Same, lateral view. Osbornellus ecuadoricus Linnavuori 124. Aedeagus, ventral view. 125. Same, lateral view. Osbornellus alatus Beamer 126. Aedeagus, ventral view. 127. Same, lateral view. Osbornellus decorus Beamer 128. Aedeagus, ventral view. 129. Same, lateral view. 358.

115 116

114

117 118

120 119 Osbornellus excavatus DeLong and Martinson 114. lygofer, lateral view (spination omitted) Osbornellus furoillatus DeLong 115. Aedeagus, ventral view. 116. Same, la te r a l view. 117. lygofer, lateral view (spination omitted) 118. P late, v entral view. Osbornellus libratus DeLong 119. Aedeagus, v entral view. 120. Same, la te r a l view. 356

105 102 103 104

106 107 108 109

112 113 110 111 Osbornellus salsus DeLong 102. Aedeagus, ventral view. 103. Same, lateral view. Osbornellus ater Beamer 104. Aedeagus, ventral view. 105. Same, la te ra l view. Osbornellus filamentus DeLong and Beery 106. Aedeagus, ven tral view. 107. Same, lateral view. Osbornellus trifrustrus DeLong and Martinson 108. Aedeagus, ventral view. 109. Same, lateral view. Osbornellus colossus n. sp. 110. Aedeagus, ventral view. 1 1 1 . Same, lateral view. « « Osbornellus excavatus DeLong and Martinson 112. Aedeagus, ventral view. 1 1 3 . Same, lateral view. 354 Osbornellus reversus DeLong 91. Eygofer, lateral view (spination omitted) Osbornellus affinis (Osborn) 92. Aedeagus, ventral view. 93. Same* lateral view. Osbornellus oastaneus n. sp. 94. Aedeagus, ventral view. 95. Same, lateral view. Osbornellus obscurus n. sp. 96. Aedeagus, ventral view. 97. Same, lateral view. Osbornellus flavibrunneus n. sp. 98. Aedeagus, ventral view. 99. Same, lateral view, Osbornellus capitatus DeLong and Knull 100. Aedeagus, ventral view. 1 0 1 . Same, lateral view. 352-

86 87

89 90 Osbornellus pandus DeLong 83. Aedeagus, ventral view. 84. Same, lateral view. 85. Eygofer, lateral view (spination omitted) Osbornellus circulus DeLong and Martinson 86. Aedeagus, ventral view. 87. Same, lateral view. 88. Eygofer, lateral view (spination omitted) Osbornellus reversus DeLong 89. Aedeagus, ventral view. 90. Same, lateral view. 350

79 76 77

■

80 82 Osbornellus eurvcephalus n. sp. 73. Aedeagus, ventral view. 74. Same, lateral view. 75. lygofer, lateral view (spination omitted). Osbornellus linnavuori DeLong 76. Aedeagus, ventral view (from Linnavuori 1959). 77. Same, lateral view (from Linnavuori 1959). Osbornellus compressus Linnavuori 78. Aedeagus, ventral view. 79. Same, lateral view. Osbornellus lunus DeLong 80. Aedeagus, ventral view. 81. Same, lateral view. 82. Pygofer, lateral view (spination omitted). 348

65 66

68 69

7170 72 Osbornellus antlerus DeLong and Martinson 64. Aedeagus, lateral view. Osbornellus spinellus DeLong and Martinson 65. Aedeagus, ventral view. 66. Same, lateral view. 67. lygofer, lateral view (spination omitted) Osbornellus respublicanus (Berg) 68. Aedeagus, ventral view. 69. Same, lateral view. Osbornellus hamatus DeLong and Martinson 70. Aedeagus, ventral view. 71. Same, lateral view. 72. lygofer, lateral view (spination omitted) 346

57 56

59 60 58

62 63 61 Osbornellus pusillus n. sp, 55. Aedeagus, lateral view. Osbornellus vicinus Linnavuori and Heller 56. Aedeagus, ventral view. 57. Same, lateral view. 58. lygofer, lateral view (spination omitted). Osbornellus hvalinus (Osborn) 59. Aedeagus, ventral view. 60. Same, lateral view. Osbornellus pullicralbus n. sp. 61. Aedeagus, ventral view. 62. Same, lateral view. Osbornellus antlerus DeLong and Martinson 63. Aedeagus, ventral view. 344 Osbornellus asperus DeLong and Martinson 46. Plate, ventral view. Osbornellus spiniloba Linnavuori and Heller 47. Aedeagus, ventral view. 48. Same, lateral view. 49. Plate, ventral view. Osbornellus unicolor (Osborn) 50. Aedeagus, ventral view. 51. Same, lateral view. 52. lygofer, lateral view (most spination:omitted). 53. Plate, ventral view. Osbornellus pusillus n, sp, 54. Aedeagus, ventral view.

341

Osbornellus auronitens (Provancher) 34. Style, ventral view. Osbornellus lirqosus DeLong 35. Aedeagus, ventral view. 36. Same, lateral view. 37. Style, ventral view. Osbornellus rotundus Bearner 38. Aedeagus, ventral view. 39. Same, lateral view. 40. Style, ventral view. Osbornellus oirrhosticnmatus n. sp. 41. Aedeagus, ventral view. 42. Same, lateral view. Osbornellus oibus DeLong and Martinson 43. Aedeagus, lateral view (from DeLong and Martinson 1976b). Osbornellus asperus DeLong and Martinson 44. Aedeagus, ventral view. 45. Same, lateral view.

Osbornellus trioartitus DeLong 23. lygofer, lateral view (spination omitted). 24. Style, ventral view. Osbornellus bellus n. sp. 25. Aedeagus, ventral view. 26. Same, lateral view. 27. Style, ventral view. Osbornellus rurrens DeLong 28. Aedeagus, lateral view (from DeLong 1941b). Osbornellus anonae Linnavuori 29. Aedeagus, ventral view. 30. Same, lateral view. Osbornellus auronitens (Provancher) 31. Aedeagus, ventral view. 32. Same, lateral view. 33. lygofer, lateral view (spination omitted). 338

18 19 M

a 21 22 20 Osbornellus cruerreroensis n. sp. 15* Aedeagus, ventral view. 16. Same, lateral view. 17. FVgofer, lateral view (spination omitted). Osbornellus Puniceus DeLong 18. Aedeagus, ventral view. 19. Same, lateral view. 20. Plate, ventral view. Osbornellus tripartitus DeLong 21. Aedeagus, ventral view. 22. Same, lateral view. 336 Osbornellus fulvomaoulatus (Osborn) 5. Aedeagus, ventral view. 6. Same, lateral view. 7. Style, ventral view. Osbornellus maqnus n. sp. 8. Aedeagus, ventral view. 9. Same, lateral view. 10. Plate, ventral view. Osbornellus parallelus DeLong and Knull 11. Aedeagus, ventral view. 12. Same, lateral view. 13. jygofer, lateral view (spination omitted). 14. Plate, ventral view. connective

style-" -"-~7th svalve sternite aedeagus —pygofer' —ovipositor

'plate 334 Osbornellus sp. (generalized) 3. Tip of male abdomen, ventral view. 4. Tip of female abdoften, ventral view. outer anteapical cellv 7costal / veinlets costa

s claval suture claval / / veins7 \ ''commissural appendix'' line 332 Osbornellus sp. (generalized) 2. Right elytron. [fcvJVv ••JJ• »v J V-'VjTV ' V f 329

Osbornellus sp. (generalized) 1. Dorsal view, showing a common type of color pattern. 328 Wolfe, H. R. 1955. Leafhoppers of the state of Washington. Wash. Agr. Expt. Sta. Cir. 277, 37 pp., illus, Woodworth, C. W. 1903. A list of the insects of California with synopses, bibliography, and synonymy. 80 pp. (Homoptera 43- 49). . 1913. Guide to C alifornia in se c ts. 360 pp., 361 illus. (Homoptera 265-270; figs. 240-246). Young, D. A. Jr. 1950. A preliminary list of Kentucky Cicadel- ' lidae (Homoptera). Ky. Acad. Sci. Trans. 13: 54-67. 327 Van Duzee, E. P. 1914. A preliminary list of the Hemiptera of San Diego County, California. San Diego Soc. Nat. Hist. Trans. 2: 1-57. . 1916. Suborder Homoptera L atr. 1810. Section Auchennorhyncha A. & S. 1843. Check l i s t of Hemiptera (excepting the Aphididae, Aleurodidae, and Coccidae) of America North of Mexico. 1916: 55-85,. . 1917a. Catalogue of the Hemiptera of America North of Mexico excepting the Aphididae, Coccidae, and Aleurodi- dae. Calif. Agr. Expt. Sta., Ent. Tech. Bull. 2: i-xiv, 1-902. . 1917b. Report upon a collection of Hemiptera made by Walter M. Giffard in 1916 and 1917, chiefly in Califor nia. Calif. Acad. Sci. Proc. 7(4): 249-318. . 1923. Expedition of the California Academy of Sciences to the Gulf of California in 1921. Proc. Cal. Acad. S ci. Vol. XII, No. 11: 123-200. . 1925. New Hemiptera from western North America. Calif. Acad. Sci. Proc. 14(4): 391-425. Waddell, D. B. 1952. A preliminary list of the Hemiptera of the Kootenay Valley. Ent. Soc. Brit. Columbia.Proc. 48: 93-96. Weese, A. 0. 1924. Animal ecology of an I llin o is elm-maple forest. 111. Biol. Monog. 9(4): 7-93, pis.. 1-7. Wene, G. P. 1946. Additions to the checklist of the Cicadelli- dae at Chatham, V irginia, with eleven new records fo r th e s ta te . Ent. News 57: 131-132. Wirtner, P. M. 1904. A preliminary list of the Hemiptera of western Pennsylvania. Carnegie Mus. Ann. 3: 183-232 (Homoptera 209-228). Wolcott, G. N. 1936. Insectae Borinquensis, A revised annota ted checklist of the insects of Puerto Rico. Puerto Rico Univ. Jour. Agr. 20: 1-600, illus. (Homoptera 71-111; 30 f ig s .) . . 1950. The insects of Puerto Rico. Puerto Rico Univ. Jour. Agr. 32: 1-224, 90 illus. (Homoptera 103- 144; 24 figs.). 326 Smith, vJ. B, 1910. Order Homoptera. Ip, A report of the insects of New Jersey. N. J. State Mus. Ann. Rpt. 1909: 87-107; figs. 32-38. Stearns, L. A. 1927. The Cicadellidae (Homoptera) of Virginia. Va. Agr. Expt. Sta. Tech. Bull. 31: 3-21. Stearns, L. A. and D. MacCreary. 1938. Leafhopper migration across Delaware Bay. Jour. Econ. Ent. 31: 226-229. Stevens, N. E, 1931. The spread of cranberry false blossom in the United States. U. S. Dept. Agr. Cir. 147: 1-18, figs. 1- 2 . Tucker, E. S. 1907. Some results of desultory collecting of insects in Kansas and Colorado. Kans. Univ. S ci. B ull. 4: 51-112 (Homoptera 64-69). Uhler, P. R. 1889. New genera and species of American Homo p tera. Trans. Md. Acad. S ci. 1: 33-44. . 1895. An enumeration of the Hemiptera-Homoptera of the Island of St. Vincent, W. I. London Zool. Soc. Proc. 1895: 55-84. Van Duzee, E. P. 1890. New C alifornia Homoptera. Ent. Amer. 6: 49-52. . 1894a. A catalogue of the described Jassoidea of North America. Amer. Ent. Soc. Trans. 21: 245-317. . 1894b. A list of the Hemiptera of Buffalo and vici nity. Bull. Buffalo Soc. Nat. Sci. Vol. V, No. IV; pp. 167-224. . 1894c. Descriptions of some new North American Homopterous in se c ts. B ull. Buffalo Soc. Nat. S ci. 5: 205- 216. . 1909a. Observations on some Hemiptera taken in Florida in the spring of 1908, Bull. Buffalo Soc. Nat. S ci. Vol. IX, No. 2: 149-230. . 1909b, Synonymical notes on North American Homo ptera. Canad. Ent. 41: 380-384. . 1912. Synonymy of the Provancher collection of Hemiptera. Canad. Ent. 44: 317-329. 325 Padley, C. 1941. A list of the leafhoppers (Cicadellidae) in the Iowa in sect survey c o lle c tio n . Iowa Acad. S ci. Proc. 47: 393-395. Procter, W. 1938. Biological survey of the Mount Desert Region. Part VI. The insect fauna, with references to methods of capture, food plants, the flora, and other biological fea tures. (Mount Desert Island Biological Laboratory, Salisbury Cove, Maine). Wistar Institute Press. Philadel phia. 496 pp. (Homoptera 75-84). . 1946. Biological survey of the Mount Desert Region. Part VII. 566 pp., illus. Provancher, L. 1889. Deuxieme sous-ordre les Homopteres. Petite Faune Entomologique de Canada, precedee d’un traite . elementaire dfentomologie. 3: 207-292. Readio, P. A. 1922. Ovipositors of Cicadellidae (Homoptera). Kans. Univ. Sci. Bull. 14: 213-298, pis. 21-33. Sanders, J . G. and D. M. DeLong. 1917. The C icadellidae (dassoidea - Fam. Homoptera) of Wisconsin, with descriptions of new species. Ann. Ent. Soc. Amer. 10: 79-95, pis. 8-9. Severin, H. H. P. 1921. Practical use of curly-leaf symptoms. Facts About Sugar 12: 170-171, 173. Shelfoz'd, V. E, 1913. Animal communities in tem perate America. As illustrated in the Chicago region. A study in animal ecology. Geog. Soc. Chicago Bull. 5, 362 pp., 306 illus. . 1937. Animal communities in temperate America as illustrated in the Chicago region. A study in animal eco logy. Geog. Soc. Chicago Bull. 5, 368 pp., 306 illus. . 1951. Fluctuations of forest animal populations in east-central Illinois. Ecol. Monog. 21: 183-214, figs. 1-18. Slosson, A. T. 1902. Additional list of insects taken in the alpine region of Mt. Washington. Smith, J. B. 1899. Insects of New Jersey. Trenton, N. J.: MacCrellish & Quigley, State Printers, pp. 1-755. . 1900. Order Homoptera. Irj Insects of New Jersey, a list of the species occurring in New Jersey, with notes on those of economic importance. N. J . S tate Bd. Agr., Ann. Rpt., Sup, 27: 81-97; figs. 33-38. 324 Osborn, H. 1905a. Jassidae of New York State. N, Y. State Mus. Bull. 97: 498-543, figs. 22-24. . 1905b. Jassidae of New York S tate. Ohio S tate Univ. Bull. 24(9): 498-545, figs. 22-24. ’ 1909. Notes on Guatemalan Hemiptera with descrip tions of a few new species. Ohio Nat. 9: 457-466. . 1911. Remarks on the genus Scaphoideus. with a revised key and d escription of new American species. Ohio Nat. 11: 249-260. . 1915. Leafhoppers of Maine. Maine Agr. Expt. Sta. Bull. 238: 81-159, figs. 11-35. . 1921. Homoptera of F lorida. Fla. Ent. 5: 1-19. . 1922. Homoptera in the v ic in ity of Cranberry Lake. N. Y. State Col. Forestry, Syracuse Univ., Tech. Bull. 16: 24-54, pi. I, Figs. 13-21. . 1923. Neotropical Homoptera of the Carnegie Museum. Part 2. Records and descriptions of five new genera and sixty-five new species of the subfamily Jassinae. Ann. Carnegie Museum 15: 27-79. . 1926a. Faunistic and ecologic notes on Cuban Homo ptera. Ann. Ent. Soc. Amer. 19: 335-366, pis. 30-31. . 1926b. Faunistic and ecological notes on Cuban Homoptera. Trop. Plant Res. Found. Sci. Contrib. 2: 335- 366, pis. 30-31. . 1928. The leafhoppers of Ohio (C icadellidae). Ohio Biol. Survey Bull. 3: 199-374, 111 illus, . 1929. Notes on Puerto Rican Homoptera. Puerto Rico Dept. Agr. Jour. 13: 81-112. . 1935. Insects of Porto Rico and the Virgin Islands Homoptera (excepting the Sternorhynchi). Sci. Surv., Porto Rico and Virgin Islands. 14: 111-260, figs. 1-71. Osborn, H. and E. D. Ball. 1897. Contributions to the Hemi pterous fauna of Iowa. Iowa Acad. Sci. Proc. 4: 172-234, pis. 19-26. Osborn, H. and D. J . Knull. 1947. Check l i s t of Ohio leafhop pers (Homoptera: Cicadellidae). Ohio Jour. Sci. 46: 329- 336. 323 Medler, J. T. 1943. The leafhoppers of Minnesota. Homoptera: Cicadellidae. Minn. Agr. Expt. Sta. Tech. Bull. 115, 196 pp., 9 pis. Metcalf, Z. P. 1913. The wing venation of the Jassidae. Ann, Ent. Soc. Amer. 6: 103-115, pis. 8-15. . 1954. Homoptera from th e Bahama Islan d s. Amer. Mus.Nov. No. 1698, pp. 1-46. . 1965. General Catalogue of the Homoptera. Fascicle VI,Cicadelloidea. Agr. Res. Ser., U. S. Dept. Agr. pp. 1-6,762.. Moore, G. A. 1907. L ist of Hemiptera taken a t Como Quebec, during the summer of 1906 (concluded). Canad. Ent. 39:- 189-191. . 1944. A list of Hemiptera taken at Hudson Heights, ^Quebec. Canad. Ent. 76: 40-44. . 1950a. Catalogue des Hemipteres de la Province de Quebec. Canad. Ent. 77: 233-271. . 1950b. Liste des Hemipteres de la Province de Quebec. Inst. Biol., Univ. Montreal Contrib. 26: 1-49. Olsen, C, E. 1923. Backyard collecting'in Ramsey, N, J, N. Y. Ent. Soc. Jour. 31: 171-175. Oman, P. W. 1938. A generic revision of American Bythoscopinae and South American Jassinae. Kans. Univ. S ci. B ull. 24: 343-420, pis, 27-35. . 1947. The types of Auchenorrhynchous Homoptera in the Iowa State College collection. Iowa State Col. Jour. Sci. 21: 161-228, figs. 1-14. . 1949. The Nearctic leafhoppers (Homoptera: Cica- dellidae). A generic classification and check list. Mem. Wash. Ent. Soc. 3: 1-253, pis. 1-44. Osborn, H. 1900a. The genus Scaphoideus. Jour. Cincinnati Soc. Nat. Hist. 19: 187-209, pis. 9-10. . 1900b. Remarks on the Hemipterous fauna of Ohio with a preliminary record of species. Ohio State Acad. Sci. Ann. Rpt. 8: 60-69. . 1900c. A list of Hemiptera collected in the vici nity of Bellaire, Ohio. Ohio Nat. 1: 11-12. 322 Knowlton, G. F. 1934* Some Utah leafhoppers. Canad* Ent. 66: 164-168, fig. 1. . 1935. Further notes on Utah Heteroptera and Homoptera. Ent. News 46: 108-112. Knowlton, G. F. and W. M. Allen. 1936. Some intermountain leaf hoppers. Utah Acad. Sci., Arts and Letters Proc. 13: 269- 276, fig. 1. Lathrop, F. H. 1917. A preliminary list of Cicadellidae (Homo ptera) of South Carolina, with descriptions of new species. Ohio Jour. S ci. 17: 119-131, fig s . 1-7. . 1919. The Cicadellidae or leafhopers of South Carolina. S. C. Agr. Sta. Bull. 199: 1-119, 44 illus. Lawson, P. B. 1920. The Cicadellidae of Kansas. Kans. Univ. Sci. Bull. 12: 5-306, pis. II-XVII. . 1922. A list of the Cicadellidae of Kansas. Kans. Acad. Sci; Trans. 30: 331-376. . 1929. Leafhoppers and the trap light. Jour. Kans. Ent. Soc. 2: 39-47. . 1930. Another seasonfs trap-lighting of leafhop pers. Jour. Kans. Ent. Soc. 3: 35-43. Leonard, M. D. 1928. Families Cercopidae, Membracidae, and Cicadellidae. In A list of the Insects of.New York, with a list of the spiders and certain other allied groups. N. Y. (Cornell) Agr. Expt. Sta. Mem. 101: 145-176. » Linnavuori, R. 1955. Contributions to the Neotropical leafhop per fauna of the family Cicadellidae. IV. Suomen Hyontei- stieteellinen Aikakauskirja-Annales Entomologici Fennici 21, No. 2-3. . 1959. Revision of the Neotropical Deltocephalinae and some related subfamilies (Homoptera). Ann. Zool. Soc. Zool. Bot. Fennicae "Vanamo11 20(1): 1-370. illus. Linnavuori, R. and F. Heller. 1961. Beitrag zur Cicadelliden fauna von Peru. Stuttgarter Beitrage zur Naturkunde aus dem Staatlichen Museum fur Naturkunde in Stuttgart. No. 67: 1-14. Lowry, P. R. 1933. Cicadellidae leafhoppers of New Hampshire. Ohio Jour. S ci. 33: 59-80. 321 Dozier, H. L. 1920. An ecological study of hammock and piney woods insects in Florida. Ann. Ent. Soc. Amer. 13: 325- 380, figs. 1-22. Essig, E. 0. and R. L. Usinger. 1940. The l i f e and works of Edward Payson Van Duzee. Pan-Pacific Ent. 16: 145-177, 1 illu s . Evans, J. W. 1947. A natural classification of leafhoppers (Jassoidea, Homoptera). Ent. Soc. London Trans. 98: 105- 271, figs. 1-36. Fattig, P. W. 1955. The Cicadellidae or leafhoppers of Georgia. Emory Univ. Mus. Bull. 11: 1-68. Fletcher, J. and A. Gibson. 1907. Entomological record, 1906. Ent. Soc. Ontario Ann. Rpt. 37: 86-104. Gibson, E. H. and E, S. Cogan. 1915. A prelim inary l i s t of the Jassoidea of Missouri with notes on species. Ohio Jour. Sci. 16: 71-78. Hayward, C. L. 1948. Biotic communities of the Wasatch Chapar ral, Utah. Ecol. Monog. 18: 473-506, figs. 1-6. Henshaw, S. 1903. The Hemiptera described by Philip Reese Uhler. IV. Psyche 10: 224-238. Hoffman, C. H., H. K. Townes, H. H. Swift and R. I . S a ile r. 1949. Field studies on the effects of airplane applications of DDT on forest invertebrates. Ecol. Monog. 19: 1-46, fig s . 1-3. Horsfall, J. L. 1916. Additions to the Jassoidea of Missouri. Ohio Jour. Sci. 16: 354-355. Howe, M. B. 1930. A study of the tarsal structures in Cicadel lidae. Ohio Jour. Sci. 30: 324-339, pis. 1-6. Johnson, C. W. .1927. Order Homoptera. In The insect fauna, with reference to the flora and other biological features. Biological survey of the Mount Desert region, conducted by William Proctor. 1: 33-38. . 1930. A list of the insect fauna of Nantucket, Massachusetts. Nantucket Maria Mitchell Assoc. Publ, 3(2): 1-159 (Homoptera 32-36). Kaloostian, G. H. 1932. A current report on vectors of Western X-disease virus of stone fruits, Utah State Hort. Soc. Proc. 1952: 19-21. 320 DeLong, D. M. 1948. The leafhoppers, or Cicadellidae, of Illi nois (Eurymelinae - Balcluthinae). Bull. 111. Nat. Hist. Surv. Vol. 24, Part 2, ppl 93-376. . 1976. New Species of Osbornellus from Bolivia and Brazil (Homoptera: Cicadellidae). dour. Kans. Ent. Soc. 49(2): 262-265. DeLong, D. M. and L. Beery. 1937. Two new species of Osbornel- 3,us. Ohio Jo u r. Sci. 37: 266. DeLong, D. M. and J. S. Caldwell. 1937. Check-list of the Cicadellidae (Homoptera) of America, north of Mexico, 93 PP* DeLong, D. M. and D. J . Knull. 1941. Two new species of Osborn ellus from the southwestern United States. Ann. Ent. Soc. Amer. 34(1): 177-178. . 1946. Checklist of the Cicadellidae (Homoptera) of America, north of Mexico. Ohio State Univ. Grad. School Stud., Biol. Sci. Sur. 1: 1-102. DeLong, D. M. and C. Martinson. 1976a. Five new species of Bolivian Osbornellus (Homoptera: Cicadellidae). Jour. Kans. Ent. Soc. 49(3): 429-432. _ 1976b. New species of Mexican Osbornellus (Homo ptera: Cicadellidae). Jour. Kans. Ent. Soc. 49(4): 583- 588. DeLong, D. M. and C. 0. Mohr. 1936. Studies of th e genus Scaphoideus (Homoptera - Cicadellidae). Part 1 - Seventeen new North American species. Amer. Midland Nat. Vol. 17, No. 6: 965-977. DeLong,- D. M. and G. N. W olcott. 1923. New species. In Wolcott's "Insectae Portoricensis." Puerto jRico Dept. Agr. Jour. 7: 257-270. Dowdy, W. W. 1947. An ecological study of the Arthropoda of an oak-hickory forest with reference to stratification. Eco logy 28: 418-439, fig. 1. Downes, W. 1919. Notes on a collection of Hemiptera. Brit. Columbia Ent. Soc. Proc. 1918: 13-16. . 1927. A preliminary list of the Heteroptera and Homoptera of B ritish Columbia. B rit. Columbia Ent. Soc. Proc. 1927: 5-22. 319 Britton, W. E. 1938. Additions to the check-list of the Insects of Connecticut. (First supplement to Bulletin No. 31). Conn. S tate Geol. and Nat. H ist. Survey B ull. 60: 1-169 (Homoptera 21-27). Brown, H. E. 1939. An annotated list of the species of Jassinae known to occur in Indiana (Homoptera, Cicadellidae). Amer. Midland Nat. 21: 663-673, pis. 1-3. Buys, J. L. 1924. The Cicadellidae of the vicinity of Ithaca, N. Y., with special reference to the structure of the gonapophyses. N. Y. (Cornell) Agr. Expt. Sta. Mem. 80: 1-115, illus. Caldwell, J . S. and L. E. M artorell. 1952. Review of the auchenorrhynchous Homoptera of Puerto Rico. Pt. 1: C icadelli dae. Jour. Agri. Univ. Puerto Rico 34(1): 1-132. Crumb, S. E. 1911. The Jassoidae of Kansas. Kans. Acad. Sci. Trans. 24: 232-238. DeLong, D. M. 1916. The leafhoppers or Jassoidea of Tennessee. Tenn. St. Board Ent. Bull. 5: 1-113, pis. 1-2; figs. 1-4. . 1923a. New species of Puerto Rican Cicadellidae. Jour. Dept. Agr. Puerto Rico. 7(1): 258-270. . 1923b. Family Cicadellidae. la Britton's Guide to the Insects of Connecticut. Part IV. The Hemiptera or sucking in sects of Connecticut. Conn. S tate Geol. and Nat. Hist. Survey Bull. 34: 56-163, pis, 2-3; text figs. 4-14. . 1923c. The distribution of the leafhoppers of Presque Isle, Pa. and their relation to plant formations. Ann. Ent. Soc. Amer. 16: 363-373, pis. 34-35; fig. 1. . 1939. A review of the genus Scaphoideus. Ent. Soc. Wash. Proc. 41: 33-45, pis. 1-5. . 1941a, The red-banded Osbornellus species of the auronitens group occurring in the United State. Ann. Ent. Soc. Amer. 34(1): 179-180. . 1941b. Some new species of Mexican Osbornellus (Insecta, Homoptera, Cicadellidae). Esc. Nac. de Cien. Bio. Ann. 2: 263-270; pi. 24. . 1942. Twelve new species of Osbornellus (Homo ptera, C icadellidae) from Mexico, Guatemala, and Panama. Brooklyn Ent. Soc. Bull. 37: 92-101. LITERATURE CITED

Arnett, R. H. and G. A. Samuelson. 1969. Directory of Cole-.* optera Collections of North America (Canada through Panama). Center for the study of Coleoptera, Lafayette, Ind.: Purdue Univ. Press, 122 pp. Ball, E. D, 1932. New genera and species of leafhoppers related to Scaphoideus. Wash. Acad. S ci. Jour. 32: 9-19. , 1936. Four new Arizona leafhoppers. Bull. Brooklyn Ent. Soc. Vol. XXXI, No. 1, pp. 18-20. Ballou, C. H. 1936a. Insectos observados durante el ano 1934. Cent. Nac. de Agr. Bol. 20: 1-60, illu s , . 1936b. Insect notes from Costa Rica in 1935. U. S. Dept. Agr. Bur. Ent. and Plant Quar. Insect Pest Surv. B ull. 16: 437-497 (Homoptefa 454-479). Barber, H. G. 1914. Insects of Florida. Hemiptera-Homoptera. Amer. Mus. Nat. Hist. Bull. 33: 526-535. . 1920. A 1919 collection of Cicadellidae in the environs of Boston. Psyche 27: 146-150, * Beamer, R. H. 1937. A review of th e genus Osbornellus in the United States and Canada (Homoptera-Cicadellidae). Jour. Kans. Ent. Soc. 10: 89-112, pi. 1-4. Berg, C. 1879. Hemiptera Argentina, (continuacion). Ann. Soc. Cient. Argentina 8: 241-272. Blake, I. H. 1926. A comparison of the animal communities of coniferous and deciduous forests. 111. Bio. Monog. 10(4): 1-148, pis. 1-16. Brimley, C. S. 1938. Order Homoptera. Irj The insects of North Carolina, pp. 85-103. B ritton, W. E. 1920. Check l i s t of th e in sects of Connecticut. Conn. State Geol. and Nat. Hist. Surv. Bull. 31: 45-56.

318 317 knobbed at tip# In lateral view (Fig. 213), dorsal projection wide at base then sharply tapered to narrow apical portion curved caudad then bent dorsad, tip pointed. Main stem slender, curved dorsad, pointed at tip. Single process lying along dor sal side of main stem, slender, shorter than stem. Female unknown. Length 3.5 mm.

TYPE MATERIAL Holotype male - Tag 1: ANTIGUA BWI, English Harbor. 20- IV, 1958. J. F. G. Clarke; Tag 2: Collected at light. (USNM). Paratypes - 14 males same as holotype. (liSNM),

RECOGNITION CHARACTERS • Very small; aedeagus with single process dorsad of stem distinctive.

SPECIMENS EXAMINED (15) BRITISH WEST INDIES - Antigua (Holotype, 14 paratypes: USNM).

DISTRIBUTION B ritish West In d ies. 316 Osbornellus multivittatus n. sp. (Figs. 212, 213)

Type lo c a lity : Antigua.

DESCRIPTION Vertex roundedly angulate; median length slightly greater than distance between eyes at posterior margin. White band along anterior margin between ocelli bordered above and below with very dark brown band, upper band bordered p o sterio rly by wide white band then th in brown lin e , a l l p a ra lle l to an terio r margin. Rest of vertex dull yellow with very indistinct brownish spot to each side of an terio r h a lf of coronal su tu re. Pronotum fin ely mottled yellow-brown; band along anterior margin yellow with few white marks. Scutellum pale yellow, with slightly darker spots in j basal angles. Elytra transparent, pale yellow with few whitish spots. Veins yellow. Three faint brown spots along commissural lin e a t apices of c la v a l suture and clav al veins. Heavier brown * spots on costal veinlets. Outer anteapical cell somewhat short, ends pointed. Male pygofer about 1.75 times as long as greatest width; apical portion wide at base, elongate, evenly tapered to rounded tip. Plate very short; apical portion about twice as long as basal portion, slender, plumose. Apical portion of style short, curved sharply laterad, pointed. Aedeagus in ventral view (Fig. 212) with basal portion somewhat elongate-rectangular, tapering to dorsal projection. Main stem slender, straight, slightly 315 RECOGNITION CHARACTERS As listed above.

SPECIMENS EXAMINED (1) PUERTO RICO - Maricao (1 paratype: DMDC).

DISTRIBUTION Puerto Rico. 314 Osbornellus bimarcrinatus montanus Caldwell and Martorell (Figs. 210, 211)

Osbornellus bimarcrinatus montanus Caldwell and Martorell, 1952: 51; Linnavuori 1959: 219; Metcalf 1965: 2184.

type locality: Puerto Rico.

DESCRIPTION Resembling nominate form but slightly larger and more ro bust; vertex more bluntly angulate, median length distinctly less than distance between eyes at posterior margin. Ventral pro cesses of aedeagus narrowly separated then divergent apically in ventral view (Fig. 210), bent dorsad in lateral view (Fig. 211). Length of male 4.5 mm., female 5 mm.

TYPE MATERIAL Holotype male - Mts. north of Ponce, Ponce-Adjuntas Road, Km. 126. 800'. Sept. 12, 1947. (location unknown; probably at University of Puerto Rico). Allotype female - same as holotype (location unknown; proba bly at University of Puerto Rico). Paratypes - males and females same as holotype; from Ciales- Jayuya Rd.j from Luquillo, Yunque Mts.; from Maricao Insular Forest, Maricao-Sabana Grande Rd. (1 in DMDC, location of others unknown; probably at University of Puerto Rico). 313 Paratypes - from same locality as allotype (location un known; probably at University of Puerto Rico).

RECOGNITION CHARACTERS Most easily distinguished by shapes of aedeagus and female 7th sternite.

SPECIMENS EXAMINED (413) AMERICAN VIRGIN ISLANDS - S t. Johns (26: USNM). BRITISH VIRGIN ISLANDS - Jo st Van Dyke (6: USNM), T ortola (28: USNM), Virgin Gorda (24: USNM). BRITISH WEST INDIES - Anguilla (179: USNM), Antigua (133: USNM), Barbuda (5: USNM), Crooked I s . (1: DMDC). DOMINICAN REPUBLIC - Pinar Bonito (1: USNM). JAMAICA - Swift River Town (1: ICCM). PUERTO RICO - Mona I s . (5: USNM), Ponce (1: USNM), P t. Cangrejos (3 including holotype: DMDC).

DISTRIBUTION Caribbean Islands. 312 Male pygofer about 1.5 times as long as greatest width; api cal portion wide, elongate-triangular, tip narrowly rounded. Plate with apical portion about twice as long as basal portion, slender, pointed, plumose. Apical portion of style short, curved strongly dorsad, sharply pointed. Aedeagus in ventral view (Fig. 208) with slender, elongate basal portion, rounded out slightly at middle, narrowed below short, truncate lateral extensions of dorsal projection. Main stem slender, broadly pointed. Ventral processes arising above base of stem and extending beyond its tip, slender, tapering, appressed on basal two-thirds, apical thirds curved out and in, apices narrowly pointed. In lateral view (Fig, 209), dorsal projection short, very slender, curved caudad, rounded at tip. Ventral processes arising about one- third distance along stem, narrow, tapered to sharp apices, very straight, pointed dorso-caudad. Posterior margin of female 7th sternite almost straight across, slightly concave, with small triangular pointed median tooth. Length 4-4.3 mm.

TYPE MATERIAL Holotype male - Tag 1: P t. Cangrejos, P. R. Feb. 29, 1920; Tag 2: G. N. Wolcott, C ollector. (DMDC). Allotype female - Cambalache Experimental Forest, Arecibo, P. R. Nov. 7, 1947. 3001. (location unknown; probably at University of Puerto Rico). 3X1 Osbornellus bimarcrinatus bimarcrinatus (DeLong) (Figs. 208, 209)

Scaphoid eus bimarcrinatus DeLong. 1923: 261; Osborn 1926a: 339, 1926b: 339, 1929: 95, 1935: 150; Wolcott 1936: 83; Metcalf 1965: 2184. Osbornellus bimarcrinatus (DeLong). Wolcott 1950: 114; Caldwell and Martorell 1952: 51; Linnavuori 1959: 218; Metcalf 1965: 2184.

Type lo c a lity : Puerto Rico.

DFSCRIFTION Vertex very bluntly angulate; median length slightly less than distance between eyes at posterior margin. Pale yellow band along anterior margin between ocelli, bordered above and below by dark brown band, then pale band, then th in n er brown band, a l l parallel to anterior margin. Rest of vertex dull yellow. Pro- notum mottled yellowish-brown; band along anterior margin very indistinct, yellowish-brown with faint whitish tinge near ends. Scutellum yellowish-brown; median band and spots ini basal angles indistinct, only slightly darker than rest of scutellum. Elytra transparent, pale whitish-yellow. Veins light brown. Few elongate lig h t brown patches. Faint brown spots a t apices of clav a l suture and clav a l veins, darker brown spots on c o sta l veinlets. Outer anteapical cell small, pointed at ends. DISTRIBUTION Jamaica. 309 206) slender, basal portion rounded at sides and tapered gently to rounded tip of dorsal projection. Main stem slender, straight and rounded at apex, lacking ventral processes. In lateral view (Fig. 207), dorsal projection long, slender, tapered slightly, curved caudad, tip broadly pointed. Main stem slender, even sided, curved dorsad then caudad just at rounded tip. Posterior margin of female 7th sternite (Fig. 236) with median triangular tooth. Length of male 4.5 mm. / female 5 mm.

TYPE MATERIAL Holbtype male - Jamaica, 40001. Hardwar Gap. VH-3-1966. Howden 6 Becker. (CNCI). Allotype female - same as holotype except VH-9-1966. (CNCI). Paratypes - 2 males same as holotype (CNCI); 7 males, 10 females from Green Hills, Jamaica. (USNM).

RECOGNITION CHARACTERS Similar to multivittatus in appearance, but plate much longer, main stem of aedeagus longer, not so strongly curved, rounded at tip, lacking dorsal process.

SPECIMENS EXAMINED (21) JAMAICA - Green Hills (17 paratypes: USNM), Hardwar Gap (Holotype, allotype, 2 paratypes: CNCI). 308 Osbornellus crilvus n. sp. (Figs. 206, 207)

Type lo c a lity : Jamaica.

DESCRIPTION Vertex narrow, roundedly angulate; median length slightly greater than distance between eyes at posterior margin. Pale yellow band along anterior margin between reddish ocelli bor dered posteriorly by slightly narrower, dark brown band fol lowed by another pale yellow band, then a th in brown lin e , a l l parallel to marginal line (three similar bands on face below and parallel to marginal line). Rest of vertex yellowish with large indistinct whitish spot on each side next to eyes and bands, indistinctly bordered mesally with brown. Pronotum light brown with w hitish band along an te rio r margin. Scutellum pale light brown, slightly yellowish posteriorly, with large orange spots in basal angles. Elytra transparent, pale yellowish-white. * Three brown spots along commissural line at apices of claval suture and claval veins, middle spot very faint. Three brown spots along costa on costal veinlets. Outer anteapical cell larger than most in this group of species, ends pointed. Male pygofer s lig h tly more than 1.5 times as long as g reat est width; apical portion wide, elongate-triangular, tip rounded. Plate with basal portion rounded laterally, tapering to long, slender apical portion plumose at tip. Apical portion of style sh o rt, curved la te ra d , tru n cate. Aedeagus in v en tral view (Fig. 307 RECOGNITION CHARACTERS Sim ilar to following four species in appearance but somewhat darker; ely tra heavily marked with brown; aedeagus and female 7th sternite distinctive.

SPECIMENS EXAMINED (4) BRITISH WEST INDIES - South Bimini Is. (Holotype, allotype, 2 paratypes: AMNH).

DISTRIBUTION B ritish West In dies. 306 and along costal veinlets. Outer anteapical cell small, ends pointed. Male pygofer about 1.5 times as long as greatest width; api cal portion triangular, tip rounded. Plate with short basal por tion and fairly long, slender, straight apical portion; tip bluntly pointed. Apical portion of style short, curved laterad, tip truncate. Aedeagus in ventral view (Fig. 204) slender, basal portion slightly wider than main stem. Ventral processes arising halfway along stem, narrow, slightly separate on basal halves, apical halves beyond stem tapered to sharp apices and slightly divergent. Tip of main stem rounded. In lateral view (Fig. 205), dorsal projection short, straight, truncate. Main stem slender, curved dorsad, rounded at tip. Ventral processes ari sing halfway along stem, slender and tapering, curved dorsad then caudad at pointed apices. Posterior margin of female 7th sternite (Fig. 235) roundedly produced except at ends, with small, square tooth at middle. Length 4-4.5 mm.

TYPE MATERIAL Holotype male - South Bimini Island, Bahamas, B. W. I. VI- 8-1950. Cazier & Rindge. (AMNH). Allotype female - same as holotype except VI-9-1950. (AMNH). Paratypes - 1 male, 1 female from South Bimini Island. (AMNH). 305 Osbornellus fasoiatus Metcalf (Figs. 204, 205, 235)

Osbornellus fasciatus Metcalf, 1954: 31; Linnavuori 1959: 219; Metcalf 1965: 2188.

Type locality: South Bimini Island.

DESCRIPTION Vertex angulate; median length slightly less than distance between eyes at posterior margin. Pale band along anterior mar tin between ocelli. Face marked with three narrow transverse bands just below marginal line and parallel to it, middle band pale and other two dark brown. Vertex with three narrow bands just behind marginal line and parallel to it, middle line pale and other two dark brown. Rest of vertex dull yellowish anter iorly blending into brown posteriorly, with some white along p o sterio r margin. Pronotum mottled brown with wide band along anterior margin mostly white with dark spots’* but narrowly orangish-yellow along middle of anterior margin. Scutellum with wide, pale brown longitudinal band down cen ter, each la te r a l mar gin of band with two faint brown spots. Large orange spot in each basal angle with dark brown stripe on lateral margin. Four white spots along anterior margin, one white spot halfway along each lateral margin. Elytra transparent, whitish, with several elongate brown patches. Veins brown. Tips heavily marked with brown. Brown spots at apices of claval suture and claval veins DISTRIBUTION Mexico. 303 .very wide basal portion. Main part of aedeagus appearing to arise from very slender pedestal at middle of basal portion, then curved out and in and out again to form short, pointed lateral extensions of dorsal projection. Main stem arising from base of dorsal projection, wide near base then tapered slightly to bifid tip. Ventral processes arising from ends of basal portion of aedeagus, widely separated, rather wide, sinuate, directed caudad, tips narrowed and pointed. In lateral view (Fig. 202), dorsal projection long, narrow, straight, slightly expanded anteriorly just below rounded tip. Main stem slender, curved dorsad, tip rounded. Ventral processes wide, bent dorsad at one** third their length then caudad at two-thirds their length with short pointed tooth on dorsal margin where bent caudad, tips pointed. Female unknown. Length 4.5 mm.

TYPE MATERIAL Holotype male - M. F. 3101. Huetamo, Mich. (Mexico). V III-22-33. (DMDC).

RECOGNITION CHARACTERS Orange on d o rsal surface and brown-speckled e ly tra immedi ately recognizable.

SPECIMENS EXAMINED (1) MEXICO - Michoacan; Huetamo (Holotype: DMDC). 302 Osbornellus crocus n. sp. (Figs. 201-203)

Type lo c a lity : Mexico.

DESCRIPTION Vertex short and very broad; median length only slightly more than half as long as distance between eyes at posterior mar gin. Orange band along anterior margin between ocelli; alter nating dark brown and orange bands below a n te rio r margin and p a ra lle l to i t ; th ree bands, two dark brown and middle one lig h t orange, behind marginal band and parallel to it, posterior brown band shorter and thinner than others. Rest of vertex bright orange, unmarked. Pronotum mottled light gray-brown with wide, bright orange band along anterior margin. Scutellum bright orange with large lig h t brown spots in basal angles. E lytra transparent, pale yellowish, heavily speckled with brown. Few small white spots. Veins brown, tips brown. Costal veinlets and apices of clav a l veins more heavily marked with brown than rest of venation. Outer anteapical cell short, ends truncate. Male pygofer about 1.5 times as long as greatest width; api cal portion long, wide, strongly rounded on ventral margin, straight on dorsal margin, tip roundedly pointed. Apical portion of plate slender, somewhat short, crenulate along lateral margin. Shape of style typical of this and following five species (Fig. 203): apical portion short, narrow, pointed, curved strongly la te ra d . Aedeagus in v en tra l view (Fig. 201) with very sh o rt, RECOGNITION CHARACTERS Similar to mexicanus but general color darker, brownish instead of yellowish; see also comparison under mexicanus.

SPECIMENS EXAMINED (51) BOLIVIA - San Esteban (Holotype, 5 paratypes: DMDC). BRAZIL - Bonito (1: USNM), Piracicaba (28: DMDC), Sao Paulo (5 including allotype: USNM), Vicosa (1: USNM). VENEZUELA - Caracas (6: USNM), El V alle (4: USNM).

DISTRIBUTION Venezuela, Brazil, Bolivia. 300 with brown. Usual brown spots along costa and commissural line. Male pygofer very broad, slightly less than l.S times as long as greatest width; apical portion short, wide, tip truncate artd slightly concave. Plate usual shape, crenulate along middle of lateral margin. Style usual shape, apical portion long and slender. Aedeagus in ventral view (Fig. 199) wide at base, nar rowed below thin lateral extensions of dorsal projection. Main stem narrow, bent back basad, sharp-tipped. Single very short, spine-like ventral process near base of stem. In lateral view (Fig. 200), dorsal projection long, slender, straight, tip nar rowed and pointed. Main stem very long and slender, curved dorsad, tapered at tip, tip sharply pointed and turned anterior ly. Single very short spine-like ventral process at base of stem. Posterior margin of female 7th sternite (Fig. 234) slanted at sides, fairly straight across middle third with slight median indentation. (Female here described). Length 5 mm.

TYPE MATERIAL Holotype male - Bolivia: San Esteban. 49 Km. N. Sta. Cruz. 7-XII-59. El. 1120 f t . (DMDC). Allotype female - Tag 1: Sao Paulo, B razil; Tag 2: E. J . Hambleton. X-3-39. (USNM). Paratypes - 2 males same as holotype; 3 males same except X-26-59. (DMDC). 299 Osbornellus ancrustatus DeLong (Figs. 199, 200, 234)

Osbornellus ancrustatus DeLong. 1976: 265.

Type locality: Bolivia.

DESCRIPTION Vertex angulate; median length about equal to distance be tween eyes at posterior margin. White apical dot only very faintly connected to oblong white spot on each side near ocellus, all surrounded with dark brown. Large white triangular spot be hind apex th in ly connected to apical dot. Short, narrow brown line behind each ocellus with oblong pale spot on mesal half of an te rio r margin. Long, th ick transverse bar a t apex, of coronal suture with orange spot just behind each end. White inverted ,,T”-shaped mark margined with brown. White lines along inner margins of eyes expanded a t ends. Pronotum mottled brown-gray with band of irre g u la r white and dark markings along a n te rio r margin (band with thin orange stripe along middle of anterior margin). Scutellum with lig h t brown longitudinal band down center, posterior half laterally margined with brown, anterior h alf with brown dot on each side where band abruptly narrowed. Large brown spots in basal angles, four short white longitudinal dashes along anterior margin, one white dot halfway along each lateral margin. Elytra transparent, yellowish, with few white spots and elongate brown patches. Veins brown. Tips margined 298 Allotype female - Tag 1: El Valle Venez. 163. C. H. Ballou; Tag 2: on Vioia faba L. X-28-1939; Tag 3: Lot No. 41-20618. (USNM).

RECOGNITION CHARACTERS Eygofer, plate and aedeagus all distinctively shaped; female 7th sternite also easily distinguishable.

SPECIMENS EXAMINED (2) VENEZUELA - El Valle (Holotype, allotype: USNM).

DISTRIBUTION Venezuela. Male pygofer slightly more than 1.5 times as long as great est width; apical portion short, very wide, almost rectangular, apical margin somewhat rounded d o rsally and s lig h tly concave ventrally. Plate with wide, almost rectangular basal portion; apical portion arising from middle of basal portion, slender, about as long as basal portion, crenulate along basal half of lateral margin. Style usual shape. Aedeagus in ventral view (Fig. 197) with almost circular basal portion. Short, wide, truncate lateral extensions of dorsal projection showing to each side of main stem. Main stem fairly wide basally, expanded slightly above base then tapered gradually to sharply pointed apex. Short spine-like ventral process arising at base of stem. In lateral view (Fig. 198), dorsal projection slender, curved caudad, tip narrowed and rounded. Basal portion of aedeagus very wide. Main stem slender, curved dorsad on basal half, ventral margin sinuate. Very short spine-like ventral process arising at base of main stem. Posterior margin of female 7th sternite (Fig. 233) wide, strongly, roundedly produced, with small bump to each side of shallow median notch. Length 5.5 mm.

TYPE MATERIAL Holotype male - Tag 1: Thymus vulcrarish. May 30, 1939; Tag 2: El V alle D. F. Venez. 163. C. H. Ballou; Tag 3: Lot No. 41-13971. (USNM). Osbornellus sinuatus n. sp. (Figs. 197, 198, 233)

Type lo c a lity : Venezuela.

DESCRIPTION Vertex roundedly angulate; median length slightly less than distance between eyes at posterior margin. Pale apical dot with wide lateral dashes not quite reaching ocelli, surrounded with dark brown. White diamond-shaped spot behind apex narrowly con nected to apical dot. Small dark brown spot behind each ocellus with larg er pale oval spot on inner margin. Very irre g u la r bright brown band between, but not quite reaching, naterior halves of eyes (band oranger on female). White inverted nT,f- shaped mark s p lit by brown along coronal su ture, ends of cross bar yellowed and faintly laterally margined with brown. Thin brown line along posterior margin. Thin white lines along inner margins of eyes more-or-less interrupted at middle with brown. Pronotum mottled brown with th in fa in t white lo n g itu d in al s trip e down center; thin orange band along middle of anterior margin, bordered posteriorly by band of white and dark spots stretching across entire pronotum. Scutellum light yellow (more white on female). Large orange spots in basal angles, small white spot in each basal corner with small dark brown spot just behind it. Elytra transparent, yellowish, with several rounded white spots and elongate brown patches. Veins brown. Heavy brown spots a t apices of claval suture, claval veins and costal veinlets. 295 SPECIMENS EXAMINED (4) MEXICO - Guerrero: Chilpancingo (1: DMDC), Iguala (3 in cluding holotype and paratype: DMDC).

DISTRIBUTION Mexico. 294 spots along costa and commissural line. Male pygofer slightly more than 1.5 times as long as great est width; apical portion short, wide, tip rounded. Plate usual shape, crenulate along lateral margin. Apical portion of style very long, slender. Aedeagus lacking v en tral processes. In ventral view (Fig. 195), basal portion of aedeagus slightly wider than main stem. Dorsal projection just showing to each side of main stem. Main stem long, wide, straight-sided, tip slightly concave. In lateral view (Fig. 196), dorsal projection long, slender, fairly straight, rounded at tip. Main stem wide at base then slightly narrowed and curved sharply dorsad, apical fourth expanded and tilted caudad with tip slightly truncate. Female unknown. Length 5.5 mm.

TYPE MATERIAL Holotype male - Tag 1: Iguala, Gro. X-25-41; Tag 2: DeLong; Good, Caldwell and Plummer. (DMDC). Paratype - 1 male same as holotype, (DMDC).

RECOGNITION CHARACTERS Apical portion of style very long; aedeagus unusual in to tally lacking verntral processes, distinctively shaped in lateral and ven tral views. 293 Osbornellus alveus DeLong and Martinson (Figs. 195, 196)

Osbornellus alveus DeLong and Martinson, 1976b:- 583.

Type lo c a lity : Mexico.

DESCRIPTION Vertex very broadly angulate; median length much less than distance between eyes at posterior margin. White apical dot with lateral dashes widened at middle and reaching ocelli, bordered above and below with dark brown. White diamond-shaped spot be hind apex connected to apical dot. Dark brown dot behind each ocellus with thin pale spot on inner margin blending posteriorly into yellow area. White inverted "T,f-shaped mark split by brown along coronal suture, margined with brown (brown darker along posterior toargin). Thin white lines along inner margins of eyes. Pronotum pale mottled w hitish-yellow ; band of white and dark brown spots along anterior margin in front along middle half. Scutellum with wide, very pale yellow longitudinal band down center, lateral margins of band with small brown dots about one- third distance from anterior margin. Longitudinal white dash to each side of anterior half of median band, large orange spots in basal angles. Anterior half of each lateral margin of scutellum marked with two white and one dark brown spot. E lytra tra n s parent, yellow, with much white and several elongate brown pat ches. Veins brown, darker near tips of elytra. Usual brown DISTRIBUTION Argentina to Brazil. 291 Elytra transparent, yellow, with many heavy longitudinal brown blotches. Veins brown. Usual brown spots along costa and com missural line. Male pygofer about 1.5 times as long as greatest width. Plate and style usual shape. Aedeagus in lateral view (Fig. 194) with dorsal projection long, slender, curved slightly caudad, rounded tip turned dorsad. Main stem long, slender, curved dor sad on basal half then fairly straight, rounded tip turned anter iorly. Ventral processes very short, spine-like, curved dorsad close to stem. Posterior margin of female 7th sternite elliptically pro duced, somewhat flattened at middle, with faint notch at center. Length 5.2-5.5 mm.

TYPE MATERIAL Described from specimens labeled "Brazil: Rio Grande do S ul." (NHMW, RLCI).

« RECOGNITION CHARACTERS Similar to mexicanus and anoustatus but main stem of aedea gus shorter and rounded at tip.

SPECIMENS EXAMINED (33). ARGENTINA - Tucuman (28: MHHN). BRAZIL - Rio Grande do Sul (1: DMDC) (4 probably from the type series: NHMW). 290 Osbornellus infuscatus Linnavuori (Fig. 194)

Osbornellus infuscatus Linnavuori, 1955: 102, 1959: 210; Metcalf 1955: 2190.

lype locality: Brazil.

DESCRIPTION Vertex short, broadly rounded; median length distinctly less than distance between eyes at posterior margin. Pale apical dot with lateral dashes widened at middle and not reaching ocelli, pale diamond-shaped spot behind apex connected to apical dot, all surrounded with brown. Dark brown spot behind each ocellus with larger oblong pale dot on inner margin blending posteriorly into large yellow area. White inverted "T^-shaped mark split by brown along coronal suture, margined with brown, ends of cross-bar somewhat obscured. Thin pale lines along inner margins of eyes. Pronotum mottled brown with fa in t pale longitudinal s trip e at middle; orange and white spots at middle of anterior margin with dark yellow band to each side reaching middle of posterior margin of eye, several white and dark spots behind each eye. Scutellum with wide, longitudinal yellow band down center margined later a lly with brown and s lig h tly narrowed on a n terio r h a lf. Large dark yellow spots in basal angles with thick dark brown lines on lateral margins, four longitudinal thin white dashes along anter ior margin, one white dot halfway along each lateral margin. state unspecified (15: DMDC).

DISTRIBUTION Mexico to Colombia 288 TYPE MATERIAL Described from four specimens from Orizaba, Mex. (H. 0,), January, 1892, and one specimend from Frontera, Tabasco, Mex* (Townsend). Beamer (1937) designated the following female spe cimen as lectoholotype: U. S. N. M. No. 5402, Orizaba, V. C., Mex., Sept. 16, 1892. (USNM).

RECOGNITION CHARACTERS Similar to ancmstatus but vertex shorter, more roundedj pygofer not as wide; apical portion of style shorter; main stem of aedeagus shorter, more strongly curved.

SPECIMENS EXAMINED (330) COLOMBIA - San Sebastian de Rabago (2: FMNH). MEXICO - Chiapas; Finca Vergel (2: DMDC), Santa Julia (1: DMDC); D istrito Federal: Mexico City (32: DMDC); Guerrero: Buena V ista (1: DMDC), Iguala (7: DMDC), Mazaclan (1: DMDC), Taxco (5: DMDC); Michoacan: Carapan (3: DMDC), Hidalgo (1: DMDC), Morelia (1: DMDC), Tuxpan (4: DMDC), Uruapan (3: DMDC), Zitacuaro (6: DMDC); Morelos: Cuernavaca (3: DMDC); Oaxaca: Rancho Montor (8: DMDC), San C ristobal (7: DMDC), Suchilapa (7: DMDC); Puebla: Huauchinango (1: DMDC), Necaxa (1: DMDC); Queretaro: San Juan del Rio (1: CNCI); San Luis Potosi: Jacala (4: DMDC), Tamazunchale (46: DMDC); Veracruz: Coatepec (2: DMDC), Cordoba (42: DMDC) (3: USNM), F ortin (70: DMDC), Jesus Carranza (5: DMDC), Jalapa Rd. (5: DMDC), Orizaba (38: DMDC), Papantla (1: TAMU), Tampico (1: TAMU), Tres Valles (1: DMDC); 287 margined laterally with brown. Large yellowish-brown spots in basal angles margined with brown, four longitudinal white dashes along anterior margin, one white triangular spot halfway along each lateral margin. Elytra transparent, yellowish, with several white spots and few fa in t oblong brown patches. Veins brown. Tips margined with brown. Thin brown spots at apices of claval veins, heavier brown spots on c o sta l v e in le ts. Male pygofer 1.5 times as long as greatest width; apical portion wide, slightly tapered, truncate. Plate crenulate along middle of lateral margin, hairy along lateral margin, apical por tion short and plumose. Style usual shape, apical portion nar row. Aedeagus in ventral view (Fig. 192) with wide basal por tion, rounded at sides. Lateral extensions of dorsal projection wide, sharply tapered to pointed basal corners. Main stem narrow, straight, pointed tip bent back toward base. Single ventral process, a short, very thin spine. In lateral view (Fig. 193), dorsal projection slender, tapered, curved caudad, tip narrow and rounded. Main stem slender,-slightly tapered, curved dorsad, long apex thin and sharply pointed. Single ventral process short, spine-like, curved dorsad. Posterior margin of female 7th sternite strongly produced, sharply tapered to broadly rounded tip. Length 5 mm. 286 - Osbornellus mexicanus (Osborn) (Figs. 192, 193)

Scaphoideus mexicanus Osborn, 1900a: 197; Van Duzee 1909a: 2.27; Osborn 1911: 250, 1928: 260; Metcalf 1965: 2191. Osbornellus mexicanus (Osborn). Ballou 1936a: 35, 1936b: 466; Beamer 1937: 104; Oman 1938: 369; DeLong 1942: 92; Metcalf 1965: 2191.

Type lo c a lity : Mexico.

DESCRIPTION Vertex short, broad, rounded; median length distinctly less than distance between eyes at posterior margin. White apical dot with short, wide, curved lateral dashes not reaching ocelli, white triangular spot behind apex connected to apical dot, all surrounded with brown. Small brown dot behind each ocellus with larger pale dot on inner margin blending posteriorly into large oblique yellow area reaching almost to anterior portion of coro nal suture. White inverted nTM-shaped mark split by brown along coronal suture, faint along anterior half of coronal suture, cross-bar of "T” margined with brown except on middle half of anterior margin. Thin white lines along inner margins of eyes. Pronotum mottled yellowish-brown; lighter band along anterior margin with thin orange spots at middle at front, .and several pale and brown dots along p o sterio r margin. Scutellum with wide light brown longitudinal band down center, posterior half Allotype female - same as holotype. (USNM). Paratype - one same as holotype. (KLCI).

RECOGNITION CHARACTERS Pygofer short and wide; distinctive shape of aedeagus in lateral and ventral views.

SPECIMENS EXAMINED (34) PERU - Machu Picchu (32: DMDC). VENEZUELA - Caracas (Holotype, allotype: USNM).

DISTRIBUTION Venezuela, Peru. 284 transparent, pale yellow, with many round white spots and elon gate brown patches. Veins brown. Thin brown spots a t apices of clav al veins, heavier brown spots on c o sta l v e in le ts. Male pygofer about 1.3 times as long as greatest width; api cal portion rather long, wide, slightly tapered, tip wide and slightly concave. Plate crenulate along middle of lateral mar gin; apical portion short. Style usual shape. Aedeagus in ventral view (Fig. 190) narrowed just above base then rounded out and gently tapered to wide lateral extensions of dorsal projection pointed on basal corners. Main stem long, slender, pointed at tip. Ventral processes slightly longer than stem, narrow, appressed on basal halves, separated and parallel on apical halves. In lateral view (Fig. 191), dorsal projection long, almost straight, parallel-sided, truncate. Main stem medium width, started somewhat ventrad then curved sharply dor sad, rounded at tip. Ventral processes slender,- slightly longer than stem, separated from stem and parallel to it on basal halves, then bent anteriorly at middle so apical halves lying next to stem. Posterior margin of female 7th sternite strongly, roundedly produced. Length 5 mm.

TYPE MATERIAL Holotype male - Caracas, Venez. A. Mirsa 223. USNM 184372. VIII-IX *49 - 16694. (USNM). 283 Osbornellus flexuosus Llnnavuori (Figs. 190, 191)

Osbornellus flexuosus Linnavuori, 1959: 213 (as a subspecies of senaratus: here elevated to species level).

Type lo c a lity : Venezuela.

DESCRIPTION Vertex short, very broadly angulate; median length distinct ly less than distance between eyes at posterior margin. White apical dot with white lateral dashes slightly curved, widened at middle, not reaching ocelli, all surrounded with brown. Wide white triangular spot behind apex connected to apical dot. Small dark brown dot behind each ocellus with larger, oblong pale spot on inner margin. Wide transverse brown bar at apex of coronal suture. White inverted "T"-shaped mark margined with brown ex cept on inside portion of apical margins of cross-bar. Thin white lines along inner margins of eyes. Rest of vertex yellow. Pronotum mottled light brown, with band of irregular light and dark markings along anterior margin enclosing thin yellow-orange spot at middle of anterior margin. Scutellum with wide, very light longitudinal band down center, posterior half margined laterally with thin brown lines, anterior half narrowed slightly with small brown dot on each lateral margin; large orange spots in basal angles, four longitudinal white dashes along anterior margin, one white spot halfway along each lateral margin. Elytra GUATEMALA - Asancion Mt. (1: DMDC), Coatepee (2: DMDC), P axtial (2: DMDC), San Marcos (3: DMDC). MEXICO - Chiaoas: Finca Vergel (30: DMDC); Guerrero: Iguala (2: DMDC); Hidalgo: Jacala (1: USNM); Michoacan: Zitacuara (1: DMDC); Morelos: Cuernavaca (2: DMDC); Nuevo Leon: Monterrey (1: TAMU); Puebla: Necaxa (17: DMDC); San Luis Potosi: Tamazunchale (Holotype, allotype, 15 parstypes of concentricus: DMDC); Veracruz: Fortin de las Flores (1: DMDC) (1: USNM), Palo Gacho (4: DMDC); s ta te unspecified: Acapulco Ed. (1 paratype of concentricus; DMDC), locality un specified (2: DMDC).

DISTRIBUTION Widespread in U, S. and Mexico, Guatemala, El Salvador. 281 extensions of dorsal projection longer in ventral view; ventral processes of aedeagus no longer than stem (shorter in ventral view).

SPECIMENS EXAMINED (152) ARKANSAS - Washinton Co. (2: SEMC). ARIZONA - Chiricahua Mts. (6: DMDC). FLORIDA - Sanford (1 paratype: USNM). KANSAS - Montgomery Co. (1: KSUC); Riley Co. (3: SEMC); S cott Co. (1: KSUC). LOUISIANA - Houma (1 paratype: SEMC), Opelousas (1: FSCA). MARYLAND - Annapolis (1: FSCA), Gibson I s . (1: FSCA). MISSISSIPPI - Agr. C oll. (1: MCZC), Durant (1: HOCI), Kosciusko (1: HOCI), Leland (1: HOCI). OHIO - Franklin Co.: Columbus (1: HOCI); Greene Co. (1: HOCI); Monroe Co. (3: HOCI); county undetermined: M arietta (1: FSCA). PENNSYLVANIA - Pittsburgh (7: ICCM). SOUTH CAROLINA - T ig erv ille (1 paratype: SEMC). TENNESSEE - Greene.Co. (5: HOCI); county undetermined: Clarksville (4: DMDC) (1: KSUC), Colliersville (1: DMDC), Covington (1: DMDC), Hixson (1: KSUC). TEXAS - Anderson Co. : Salmon (5: TAMU); Brazos Co. (2: TAMU); Cameron Co. (3: SEMC); county undetermined: Brownsville (1: HOCI) (1: SEMC), Corpus C h risti (2: HOCI). EL SALVADOR - San Salvador (1: DMDC). 280 TYPE MATERIAL Holotype male - Domiphan Co., Kans. July 20, 1924. (SEMC). Allotype female - same as holotype. (SEMC). Paratypes - 8 males, 7 females from Douglas Co;, Kans. (SEMC); 2 males from Tigerville, S. C. (SEMC); 1 male, 4 fe males from Houma, La. (SEMC); 2 females from Leland, Miss. (SEMC); 1 male from Hamilton, Miss. (SEMC); 1 female from Prairie, Miss. (SEMC); 1 female from Prattsburg, Ga. (SEMC); 1 female from Fulton, Miss. (SEMC); 1 female from Orange Co., Tex. (SEMC); 1 female from Tallulah, La. (SEMC); 1 female from Shuqualak, Miss. (SEMC); 1 female from Tuskegee, Ala. (SEMC); 1 female from Hilliard, Fla. (SEMC); 4 males, 2 females from Sanford, Fla. (SEMC); 2 females from Meridian, Miss. (SEMC); 1 female from Barnes, Ariz. (SEMC); 1 female from Ocala, Fla. (USNM); 3 males from College Fk., Md. (USNM); 2 males from B erlin, Md. (USNM); 1 male, 2 females from Annapolis, Md. (USNM); 1 male from Bristol, Ky, (USNM); 2 males from Savannah, Ga. (USNM); 1 female from Washington, D. C. (USNM); 2 males, 1 female from Kerrville, Tex. (USNM); 2 females from Victoria, Tex. (USNM); 1 male, 1 female from Vienna, Va. (USNM); 6 males, 7 females from Sanford, Fla. (USNM).

RECOGNITION CHARACTERS Similar to pallidus but markings on vertex very distinct; apical portion of pygofer distinctly wider in relationship to greatest width; plate and style much more slender; lateral 279 half narrowed with small brown dots on lateral margins. Large brown spots in basal angles, four longitudinal white dashes along anterior margin, one white spot halfway along each lateral mar gin. Elytra transparent, yellowish with great deal of white. Few cells with oblong brown patches. Veins brown. Tips brown. Usual brown spots along costa and commissural line quite thin. Male pygofer about one and one-third times as long as greatest width; apical portion wide (about two-thirds as wide as greatest width), short, truncate. Plate with elongate- triangular basal portion; apical portion long, narrow, tapered to long, filamentous apex. Style with apical portion narrow, ta pered to tip. Aedeagus in ventral view (Fig. 188) rounded on sides of basal portion, tapered to long, slender, truncate lateral extensions of dorsal projection. Main stem long, slen der, pointed. Ventral processes very narrow, straight, pointed, appressed, shorter than stem. In lateral view (Fig. 189), dorsal projection long, slender, almost straight, slightly narrowed at tip. Main stem slender, curved dorsad, tip narrowed and pointed. Ventral processes almost as long as stem, slender, curved dorsad, slightly separated from stem, apices pointed. Posterior margin of female 7th sternite evenly, roundedly produced. Length 5-5.5 mm. The types of Osbornellus concentricus DeLong have been exa mined by the author and determined to be synonymous with clarus Beamer. 278 Osbornellus clarus Beamer (Figs. 188, 189)

Osbornellus clarus Beamer, 1937: 99; DeLong and Caldwell 1937: 83; DeLong and Knull 1946: 32; Osborn and Knull 1947: 331; DeLong 1948: 207; Oman 1949: 122; Young 1950: 66; Fattig 1955: 46; Metcalf 1965: 2185. Osbornellus concentricus DeLong, 1942: 48; Metcalf 1965: 2185. (type locality: Mexico). NEW SYNONYMY.

Type locality: Kansas.

DESCRIPTION Vertex angulate; median length about equal to distance be tween eyes at posterior margin. White apical dot with lateral dashes widened at middle then narrowed to ocelli, bordered above and below with dark brown lin e s . Wide white diamond-shaped spot behind apex connected to apical d o t. Dark brown spot behind each ocellus with pale spot on anterior inner margin, large orange spot on posterior margin toward middle of vertex. Transverse brown bar at apex of coronal suture. White inverted "T^-shaped mark sp lit by brown along coronal suture, margined with brown. White lines along inner margins of eyes. Ftonotum mottled light brown w ith band of irre g u la r white and dark brown marks along anterior margin enclosing elongate orange spot at middle. Scu- tellum with pale yellow longitudinal band down center, posterior half wide and margined laterally with thin brown lines, apical MEXICO - Chiapas: Esmerelda (Holotype of separatus: DMDC), Esperanza (Allotype, 3 paratypes of separatus; DMDC), Finca Aurora (7: DMDC), Finca Maravillas (2: DMDC), Finca Vergel (10 paratypes of separatus: DMDC), Huitzle (1 paratype of separatus; DMDC); Morelos: Cuernavaca (2 paratypes of separa tus; DMDC); Oaxaca: Chiltepec (1: DMDC); Puebla; Necaxa (1: USNM); Veracruz: Fortin de las Flores (1: USNM), locality unspecified (1; USNM); state unspecified (2: USNM).

DISTRIBUTION Southwestern U. S., Mexico, Costa Rica. Guatemala. 276 The types of Osbornellus separatus DeLong have been examined by the author and determined to be synonymous with pallidus Beamer.

TYPE MATERIAL Holotype male - Patagonia, Ariz. dune 24, 1933, R. H. Beamer. (SEMC). Allotype female - same as holotype. (SEMC). Paratypes - 8 males, 4 females same as holotype; 24 same except c o ll. by P. W. Oman. (EDBC, USNM).

RECOGNITION CHARACTERS Very similar to clarus but paler in color, markings of vertex in d is tin c t; pygofer narrower a t apex compared to g reatest width; ventral processes of aedeagus as long as, or longer than, main stem.

SPECIMENS EXAMINED (68) ARIZONA - Patagonia Mts. (1: HOCI), Santa Rita Mts. (1: DMDC). TEXAS - Sequin (2: SEMC). COSTA RICA - San Pedro de Montes de Oca (4: USNM), Vista de Mar (1: USNM). GUATEMALA - Coatepee (1 paratype of separatus: DMDC), Hayon Chiquita (1: DMDC), Retalhuleu (4 paratypes of separatus: DMDC), S ta. Lucia and Patulul (1: DMDC), Yepocapa (19: USNM). 275 laterally with thin brown lines, anterior half narrowed slightly with small brown dot on each la te r a l margin. Large orange spots in basal angles, small white dot on anterior margin between center yellowish band and each orange spot; basal two-thirds of each lateral margin with brown dot between two white dots. Ely tra transparent, yellowish with much white, many oblong brown patches. Veins brown. Tips brown. Usual brown spots along costa and commissural lin e . Male pygofer about 1.5 times as long as greatest width; api cal portion wide (but much narrower than greatest width), slight ly tapered, truncate. Plate with very large basal portion; apical portion short, slender, rounded at tip, crenulate on lateral margin, plumose at tip. Style with large basal portion, usual shape, fledeagus in ventral view (Fig. 186) with basal por- j tion rounded at sides, narrowed below short, rounded lateral ex tensions of dorsal projection. Main stem long, slender, rounded at tip. Ventral processes long as stem, very narrow, straight, « pointed apices turned laterad. In lateral view (Fig. 187), dor sal projection long, slender, curved slightly caudad, tip nar rowed and rounded. Main stem long, slender, curved dorsad, pointed at tip. Ventral processes long as stem or slightly longer, slender, tapered slightly, narrowly separated from stem, curved dorsad, apices pointed and almost touching apex of stem. Posterior margin of female 7th sternite strongly produced, broadly rounded. Length 5-5.5 mm. 274 Osbornellus pallidus Beamer (Figs. 186, 187)

Osbornellus pallidus Beamer, 1937: 106; DeLong and Caldwell 1937: 83; DeLong and Knull 1946: 32; Oman 1949: 122; Metcalf 1965: 2192. Osbornellus separatus DeLong, 1942: 97; Metcalf:1965: 2196. (lype locality: Mexico). NEW SYNONYMY.

3ype locality: Arizona.

DESCRIPTION Vertex angulate; median length about equal to distance be tween eyes at posterior margin. General tawny color with mark ings rather indefinite. Pale apical dot with wide, curved later a l dashes tap erin g to o c e lli. Dark brown lin e below marginal markings, thin brown line above. Wide diamond-shaped spot be hind apex connected to apical dot. Dark brown spot behind each ocellus with oblong pale spot on inner margin slanted toward diamond-shaped spot. Large orange spot on each side of anterior half of coronal suture halfway to eye. Heavy brown transverse bar at apex of coronal suture. White inverted MT"-shaped mark thinly margined with brown. Thin white lines along inner mar gins of eyes, slightly expanded at ends. Pronotum mottled light brown with band of irregular light and dark spots along anterior margin (band somewhat orangish anteriorly). Scutellum with broad, very pale yellow band down center, posterior half bordered 273 RECOGNITION CHARACTERS White scutellum very prominent; shape of aedeagus distinc tiv e .

SPECIMENS EXAMINED (1) MEXICO - Chiapas; Jnct. Rts. 190 & 195. (Holotype: CNCI).

DISTRIBUTION Mexico. 272 brown. Male pygofer distinctly less than twice as long as greatest width; apical portion wide, tapered slightly, broadly rounded at tip. Apical portion of plate short. Style usual shape, tip truncate. Aedeagus in ventral view (Fig. 184) with long, slender basal portion, sides very slightly rounded. Lateral extensions of dorsal projection short, sharply tapered to basal corners. Main stem arising far from base, slender. Ventral processes ari sing near base of stem, narrow, straight and slightly divergent for most of length, apical fourths bent inward so pointed apices meet. In lateral view (Fig. 185), dorsal projection slender, straight, expanded at rounded tip. Main stem fairly wide at base, curved dorsad, tapering to pointed tip, tip turned slightly caudad. Ventral processes same length as stem, appressed to it for most of length, wide at base before tapering sharply to nar row middle, then expanded slightly and curved slightly caudad before,tapering to pointed apices and curving back to meet apex of stem. Female unknown. Length 5 mm.

TYPE MATERIAL Holotype male - Tag 1: MEX., Onct. Rts. 190 & 195, Chis. VI-11-1969. J . M. Campbell; Tag 2: At black lig h t. (CNCI). 271 Osbornellus leuoostiomatus n. sp. (Figs. 184, 185)

Type lo c a lity : Mexico.

DESCRIPTION Vertex short, very broadly angulate; median length about equal to distance between eyes at posterior margin. Large white apical dot with fat, curved lateral dashes reaching ocelli, all surrounded with dark brown. Broad white triangular spot behind apex extended forward to meet apical dot. Small dark brown spot behind each ocellus. Large, oblong, oblique orange spot on each side of vertex from ocellus to base of ,,T"-shaped mark. Thick brown transverse bar at apex of coronal suture slightly curved anteriorly at end. White inverted "T-shaped mark split by brown along coronal suture, margined with brown. Thin white lines along inner margins of eyes, slightly expanded at posterior mar gin of vertex. Pronotum mottled brown with larg e dark brown spot to each side of posterior half of thin, faint white longi tudinal stripe along center; band of irregular white and dark markings along anterior margin. Scutellum largely white, slight ly yellowed at center with two small brown dots at middle of anterior margin; large light brown spots in basal angles ringed with dark brown. Elytra transparent, pale yellow, with many white spots and heavy oblong brown patches. Veins brown. Tips heavily marked with brown. Brown spots at apices of claval su ture and claval veins. Costal veinlets heavily marked with 270 RECOGNITION CHARACTERS Wide, truncate apical portion of pygofer; aedeagus distinc tive, especially in lateral view with tiny knob on tip of main stem.

SPECIMENS EXAMINED (7) PERU - Sinchono (Holotype, allotype, 5 paratypes: DMDC).

DISTRIBUTION Peru. 269 apices of claval suture, claval veins and costal veinlets. Male pygofer about 1.5 times as long as greatest width; api cal portion wide, tapered only slightly, sides fairly straight, tip truncate and slightly concave. Plate wide at base, crenulate along middle of lateral margin, apical portion short. Style usual shape. Aedeagus in ventral view (Fig. 182) with rounded portion just above base, tapered to thin, short, pointed lateral extensions of dorsal projection. Main stem slender, tip pointed. Ventral processes narrow, appresses for most of length, apical thirds curved slightly out then in at apices, exposing tip of main stem. In lateral view (Fig. 183), dorsal projection long, pointed, straight dorsad, widened slightly at middle, tip nar rowed. Main stem slender, curved dorsad above base then fairly straight until curved anteriorly and sharply narrowed below very slightly expanded and rounded tip. Ventral processes narrow, tapered to sharp apices, slightly separated from, stem, parallel to stem and about as long. Posterior margin of female 7th sternite (Fig. 232) very strongly, roundedly produced, with slight notch at center. Length 5.5 mm.

TYPE MATERIAL Holotype male - Sinchono, Peru. 7-44. (DMDC). Allotype female - same as holotype. (DMDC). Paratypes - 4 males, 1 female from Sinchono, Peru. (DMDC). 268 Osbornellus stiomatus n. sp. (Figs. 182, 183, 232)

type locality: Peru.

DESCRIPTION Vertex very broadly angulate; median length distinctly less than distance between eyes at posterior margin. Pale apical dot with wide, curved, pale lateral dashes not reaching ocelli, all surrounded with dark brown. White triangular spot behind apex. Dark brown spot behind each ocellus with oblong pale spot on inner margin blending into orangish area toward apical half of coronal suture. Short, wide, slightly curved transverse brown bar at apex of coronal suture. Slightly faded whitish inverted "T^-shaped mark s p lit by brown along coronal su tu re, margined with brown. Two white spots along inner margin of each eye. Pronotum mottled lig h t brown with th in orangish band along an terior margin between bases of eyes, darker near middle, and row of irregular white and dark spots just behind. Scutellum with wide pale yellow band down center margined laterally with thin brown lin e s, an terio r h a lf narrowed w ith sm all round brown dot on each side. Large orange spots in basal angles margined with brown with large brown spot where touching lateral margin of scutellumj four short, white longitudinal dashes along anterior margin, one white spot halfway along each lateral margin. Elytra transparent, yellow, with many w hite spots and oblong brown patches. Veins brown. Tips margined with brown. Brown spots at 267 lateral margin; apical portion short. Style usual shape. Aedea- gus in ventral view (Fig. 180) wide at base, sides rounded, nar rowest just below short lateral extensions of dorsal projection. Main stem slender, rounded at tip. Ventral processes arising below base of main stem, narrow, appressed, pointed, slightly longer than stem. In lateral view (Fig. 181), dorsal projection sturdy, straight, tapered at tip. Ventral processes slender, tapered, widely separated from stem at base, closer to it apically, tips pointed. Female unknown. Length 5 mm.

TYPE MATERIAL Holotype male - ARGENTINA. 800 m. Tucuman, Ciudad Univer- sitaria. 18-11-59. J. F. G. Clarke. (USNM).

RECOGNITION CHARACTERS Short, wide, rounded vertex; ventral processes of aedeagus widely separated from main stem in lateral view.

SPECIMENS EXAMINED (1) ARGENTINA - Tucuman (Holotype: USNM).

DISTRIBUTION Argentina.

» Osbornellus unus n. sp, (Figs. 180, 181)

lype locality: Argentina.

DESCRIPTION Vertex short, rounded; median length distinctly less than distance between eyes at posterior margin. White apical spot with slender white dash to each side slightly widened at middle then tapered and not reaching ocellus; these marginal markings surrounded with brown. Brown spot behind each ocellus with oval pale spot on inner margin. White inverted ’^"-shaped mark mar gined with brown except along stem of ,,Tn. Thin white lines along inner margins of eyes. Rest of vertex yellow. Pronotum pale mottled yellow-brown with band of white and dark spots along anterior margin. Scutellum with wide, pale yellow band down center, posterior half of band laterally margined with brown, anterior half with small round brown dot on each lateral margin. Large yellowish-orange spots in basal angles, four short longitudinal white dashes along anterior margin, one white dot halfway along each lateral margin. Elytra transparent, yel lowish, with several white spots and few oblong brown patches. Veins brown. Tips heavily marked with brown. Brown spots at apices of claval suture, claval veins and costal veinlets. Male pygofer about 1.5 times as long as greatest width; api cal portion slender, more-or-less rectangular, corners rounded, tip truncate. Plate usual shape, crenulate along middle of 265 distinctly shorter than stem.

SPECIMENS EXAMINED (41) ARIZONA - Cochise Co. : Portal (5: AMNH); county undeter mined : Ash Fork (1: HOCI), Carrizo (3: HOCI), Chiricahua Mts. (4: DMDC) (7: HOCI), Gracie (1: SEMC), Granite Dell (1: DMDC) (1: SEMC), Huachuca Mts. (9: HOCI), Hualpai Mts. (1: HOCI), Patagonia (1: DMDC), Prescott (3: HOCI), Santa Rita Mts. (2: SEMC). TEXAS - Davis Mts. (2: DMDC).

DISTRIBUTION Arizona, Texas. 264 brown. Usual brown spots along costa and commissural line heavy. Male pygofer about 1.5 times as long as greatest width; api cal portion short, tapered, rounded at tip. Plate and style usual shape, Aedeagus in ventral view (Fig. 178) slender at base, tapered slightly. Lateral extensions of dorsal projection short and blu n t. Main stem slender, tapered to sharp point. Ventral processes distinctly shorter than stem, very narrow, appressed, tapered to sharp apices. In lateral view (Fig. 179), dorsal projection long, slender, curved caudad. Main stem medium width, tapered gently, slightly knobbed and rounded at tip, curved slightly dorsad then bent slightly caudad. Ventral pro cesses close to stem, distinctly shorter (about two-thirds length of stem), stout at base and tapered to sharp apices. Posterior margin of female 7th sternite strongly, roundedly produced, slightly flattened at middle. Length 5 mm.

TYPE MATERIAL Holotype male - Patagonia, Ariz. R. H. Beamer. (SEMC). Allotype female - same as holotype. (SEMC). Paratypes - 5 females same as holotype; 9 females same ex cept June 24, 1933, P. W. Oman; 7 males, 10 females same except c o ll. by E. D. B all. (EDBC, USNM).

RECOGNITION CHARACTERS Vertex largely brown, white markings on posterior half re duced; ventral processes of aedeagus stout in lateral view, 263 Osbornellus omani Beamer (Figs. 178, 179)

Osbornellus omani Beamer, 1937: 100; DeLong and Caldwell 1937: 83; DeLong and Knull 1946: 32; Oman 1949: 122; Metcalf 1965: 2191.

Type locality: Arizona.

DESCRIPTION Vertex roundedly angulate; median length about equal to dis tance between eyes at posterior margin. Pale apical dot with thin, curved pale lateral dashes reaching ocelli, elongate- triangular pale spot behind, all surrounded with dark brown. Dark brown spot behind each ocellus with la rg e r, oval pale spot on irtner margin. Very wide dark brown transverse band across anterior portion of coronal suture almost reaching ocelli, inter rupted posteriorly by white along each side of coronal suture. Inverted ,'T,,-shaped mark reduced to longitudinal white dash on each side of coronal suture and shorter longitudinal white dash on each side halfway to eye, all surrounded with brown. Two white spots along inner margin of each eye. Pronotum mottled brown with thin, faint white longitudinal stripe down center and band of white and dark spots along anterior margin, one white spot halfway along each lateral margin, four short, longitudinal white dashes along anterior margin. Elytra transparent, yellow ish , heavily marked with brown and w hite. Veins brown. Tips 262 RECOGNITION CHARACTERS Aedeagus d is tin c tiv e , as with apices of v en tral processes bent* outward.

SPECIMENS EXAMINED (34) MEXICO - Chiapas: Finca Belem (1: DMDC), Finca Vergel (Allotype, 2 paratypes: DMDC); Hidalgo: Ixmiquilpan (1: DMDC), Oacala (2: DMDC), Zijnapan (2: DMDC); Oaxaca: Chiltepec (2 including holotype: DMDC), Ixcatlan (1: DMDC), Lachichila (1: DMDC), Paso de. Bodegas (16: DMDC), San C ristobal (2: . DMDC), Vaile Naconia (1: DMDC); Veracruz: Cordoba (1: DMDC); state unspecified (1: DMDC).

DISTRIBUTION Mexico. 261 costa and commissural lin e . Male pygofer s lig h tly more than 1.5 times as long as g reat e st width; ap ical portion sh o rt, somewhat narrow, tapered slightly, longest on ventral margin, tip blunt. Plate usual shape, crenulate along middle of lateral margin, plumose at tip. Style usual shape. Aedeagus in v en tral view (Fig. 176) with basal portion wide, almost rectangular, narrowed below slender, truncate lateral extensions of dorsal projection. Main stem long, very slender, tip rounded. Ventral processes very narrow, straight, appressed, tips bent laterad. In lateral view (Fig. 177), base narrow. Dorsal projection curved caudad, narrowed near tip. Main stem wide, tapered slightly, curved gently dor sad, tip knobbed and rounded. Ventral processes slightly shorter, slender, slightly separated from stem, parallel to stem with apices pointed caudad. Posterior margin of female 7th sternite slightly, roundedly produced to each side of median notch, shallowly concave at ends. Length 5.5 mm.

TYPE MATERIAL Holotype male - Tag 1: C hiltepec, Oax. 3-21-33. M. F. 2523; Tag 2: D. Quiroz coll. (DMDC). Allotype female - M. F. 9319. Vergel, Chis. V-28-l35. (DMDC). Paratypes - males and females from Finca Vergel (2 females in DMDC; number and location of others unknown). 260 Osbornellus rubellus DeLong (Figs. 176, 177)

Osbornellus rubellus DeLong. 1941b: 266; Metcalf 1965: 2193.

type locality: Mexico.

DESCRIPTION Vertex very broadly angulate; median length slightly less than distance between eyes at posterior margin. Pale apical dot with pale lateral dashes fat near apical dot then tapered to ocelli; these markings and ocelli bordered above and below with dark brown. Pale triangular spot behind apex extended forward to meet apical dot. Heavy brown transverse bar at apex of coro nal suture with ends curved slightly anteriorly, pale dot beside each end. Large orange areas midway between anterior portions of coronal suture and eyes. White inverted ,,T1,-shaped mark split by brown along coronal su ture, margined with brown. Thin white lines along inner margins of eyes, fronotum mottled light brown with band of irre g u la r lig h t and dark marks along a n te rio r mar gin. Scutellum with wide, longitudinal light brown band down center margined laterally with brown and posteriorly with white. Large orangish-brown spots in basal angles, four longitudinal white dashes along anterior margin, one triangular white spot halfway along each lateral margin. Elytra transparent, yellowish- brown, with several sm all white spots and elongate brown patches. Veins brown. Tips margined with brown. Usual brown spots along 259 RECOGNITION CHARACTERS Pale scutellum; aedeagus distinctive with stem broad in lateral view and ventral processes appearing "forked1f apically.

SPECIMENS EXAMINED (368) ARGENTINA - Loreto Missiones (15: USNM). BRITISH HONDURAS - Blue Creek’ (1: DMDC). GUATEMALA - E l Naranjo Chle. (i: USNM), Hajon Chiquita (6: DMDC), Yepocapa (4: USNM). HONDURAS - El Zamorano (2: DMDC). MEXICO - Chiapas: Esmerelda (1: DMDC), Esperanza (1: DMDC), Finca Belem (5: DMDC), Finca Germania (3: DMDC), Finca la Victoria (1: DMDC), Finca Lubeca (2: DMDC), Finca Vergel (231 including holotype, allotype, 207 paratypes: DMDC), San Cristobal (11: DMDC), locality unspecified (2: DMDC); Distrito Federal: Mexico City (1: DMDC); Morelos: P. de Ixtla (1: DMDC); Oaxaca: Chitepec (1: DMDC), Reaqui (1: DMDC), Tleat- laxco (1: DMDC), Tolosa (1: DMDC), Zoogochi (1: DMDC); Puebla: Necaxa (13: DMDC); San Luis P otosi: Finca V ictoria (28: DMDC); Veracruz: La Forestal (1: DMDC); state unspecified (30: DMDC). PANAMA - Volean (3: USNM).

DISTRIBUTION From Mexico, through Central and South America. 258 plate wide at base, gradually tapered, narrow near tip, crenulate and plumose along la te r a l margin. S tyle usual shape. Aedeagus in ventral view (Fig. 174) with basal portion long, wide, expand ed slightly near middle then narrowed slightly just below slen der, pointed lateral extensions of dorsal projection. Main stem slender, tip rounded. Ventral processes very narrow, straight and appressed for basal three-fifths then curved out and in, pointed tips close. In lateral view (Fig. 175), base narrow. Dorsal projection long, slender, slightly bent caudad, tip rounded. Main stem wide, curved dorsad, narrowed only at dull- pointed tip. Ventral processes very narrow, arising near base of stem, slightly separated from it, following curve of stem and ending below i t s t i p . Posterior margin of female 7th sternite slightly concave to each side of short, very broad median projection rounded at cor ners . Length 5 mm.

TYPE MATERIAL Holotype male - M. F. 4205. V-19-35. (from Finca Vergel, Chiapas, Mexico). (DMDC). Allotype female - M. F. 4321. Vergel, Chis. V-28-35. (DMDC). Paratypes - 97 males, 110 females from Finca Vergel. (DMDC). 257 Osbornellus rarus DeLong (Figs. 174, 175)

Osbornellus rarus DeLong. 1941b: 268; Linnavuori 1959: 213; Metcalf 1965: 2192.

Type lo c a lity : Mexico.

DESCRIPTION Vertex bluntly angulate; median length about equal to dis tance between eyes at posterior margin. General yellowish color. Pale apical spot with slender, curved, pale lateral dashes not reaching ocelli, all thinly margined with brown. Broadly trian gular pale spot behind apex extending froward to apical dot. Brown spot behind each ocellus with elongate pale dot on inner margin almost reaching trian g u lar spot behind apex. Narrow brown transverse bar at apex of coronal suture. White inverted "T’1- shaped mark thinly margined with brown. Thin white lines along inner margins of eyes. Rest of vertex yellow (coloring darker on some specimens). Pronotum pale mottled yellow-brown with band of irregular light and dark markings along anterior margin. Scu tellum white, slightly yellowed at center, with large brown spots in basal angles. Elytra transparent, pale yellow, with many white spots, few oblong brown patches. Veins brown. Usual brown spots along costa and commissural line. Male pygofer about 1.5 times as long as greatest width; api cal portion short, truncate, almost square. Apical portion of 256 Alto, V'cruz. (DMDC).

RECOGNITION CHARACTERS Similar to albooinctus but distinguished by spine on pygo fer, long apical portion of style; aedeagus with longer basal portion, truncate dorsal projection, ventral processes separated in ventral view.

SPECIMENS EXAMINED (60) GUATEMALA - Hayon Chiquita (1: DMDC), San Marcos Finca La Paz (Is UMMZ). MEXICO - Chiapas; Finca Vergel (32 including allotype and 25 paratypes: DMDC), La Florida (Holotype, 1 paratype: DMDC), Mont Grande (3: DMDC), Rayon (2: TAMU); Morelos: Cuernavaca (1: DMDC); Oaxaca: Lachichila (1: DMDC), San Pedro Vaneri (1: DMDC), Tuxtepec (1 paratype: DMDC); San Luis Potosi: Finca Victoria (12: DMDC); Tabasco: Teapa (1: TAMU).; Veracruz; Coatepec (1: DMDC), Monte Alto (1 paratype: DMDC).

DISTRIBUTION Mexico, Guatemala. 255 Male pygofer (Fig. 173) about 1.5 times as long as greatest width; apical portion much narrower than rest of pygofer, tapered to rounded tip bearing long pointed spine directed caudad and ventrad. Apical portion of plate short, slender, crenulate on most of lateral margin, plumose at tip. Style usual shape, api c a l portion long. Aedeagus in v en tral view (Fig. 171) with slender, rounded portion just above base, tapered slightly to dorsal projection with truncate lateral extensions. Main stem slender, tapered slightly, tip narrowly rounded. Ventral pro cesses narrow, straight, slightly separated, not quite as long as stem. In lateral view (Fig. 172), aedeagus expanded above narrow base. Dorsal projection short, expanded apically, notched at tip. Main stem slender, curved dorsad, tip expanded into short, sharp, anteriorly-directed point. Ventral processes nar row, tapering, appressed to stem, ending just below apex of stem. Posterior margin of female 7th sternite roundedly produced, sides s.omewhat sinuate, center slightly concave. Length 5.5 mm.

TYPE MATERIAL Holotype male - Tag 1: La Florida, Chiapas. V-*31. M. F. 2083; Tag 2: J. Parra Coll. (DMDC). (genitalia missing). Allotype female - Tag 1: Finca Vergel, Chiapas. V-13-35. M. F. 4152; Tag 2: A. Dampf c o ll. (DMDC). Paratypes - 1 male from La Florida; 4 males, 21 females from Finca Vergel; 1 female from Tuxtepec, Oaxaca; 1 female from Monte 254 Osbornellus splnosus DeLong (Figs. 171-173)

Osbornellus spinosus DeLong* 1942: 98; Metcalf 1965: 2197.

Type lo c a lity : Mexico.

DESCRIPTION Vertex rounded; median length slightly less than distance between eyes at posterior margin. Pale apical dot with slender* curved* pale lateral dashes not reaching ocelli; all surrounded with dark brown. Pale triangular dot behind apex expanded for ward to meet ap ical d o t. Dark brown dot behind each ocellus with larger yellowish dot on inner margin. Very heavy brown bar at apex of coronal suture with oblong* oblique orange spot at each end of posterior margin. Dull, whitish inverted nTn-shaped mark margined with brown. Narrow white lin e s along inner margines of eyes. Pronotum mottled yellow-brown with thin, faint white long itudinal stripe down center and band of irregular light and dark spots along anterior margin. Scutellum with thin white line along posterior halves of lateral margins, light brown stripe down center* larg e brown spots in basal angles and four short white longitudinal dashes along anterior margin. Elytra trans parent, yellow, with several white spots and few oblong brown patches. Veins brown. Tips bordered with brown. Usual brown spots along costa and commissural line. 253 SPECIMENS EXAMINED (2) GUATEMALA - Patzun (1: DMDC). MEXICO - Guerrero: Aguacatc. (Holotype: DMDC),

DISTRIBUTION Mexico, Guatemala. 252 Usual brown spots along costa and coirmissural line. Male pygofer about 1.5 times as long as greatest width; api cal portion wide, truncate. Plate usual shape, crenulate along middle of lateral margin, slightly expanded near tip. Style usual shape, apical portion long. Aedeagus in ventral view (Fig. 169) with basal portion wide, rounded laterally. Lateral extensions of dorsal projection narrow, just showing to each side of ventral processes. Main stem long, slender, pointed. Ventral processes slender, crossed at midlength then slightly expanded before tapering to long, pointed apices. In lateral view (Fig. 170), dorsal projection long, slightly curved caudad, narrowed at tip. Main stem rather wide, curved gently dorsad, tip expan ded on dorsal corner so ventral side appearing flattened. Ven tral processes slender, separated from stem, curved dorsad then caudad near pointed apices. Female unknown. Length 5.5 mm. «

TYPE MATERIAL Holotype male - Tag 1: M. F. 1794. Aguacatc, G;ro. IX-24- '30; Tag 2: J. Parra Coll. (DMDC). (genitalia missing).

RECOGNITION CHARACTERS Aedeagus resembling sc a la ris and b o realis but re ad ily d is tinguishable in lateral view by odd shape of main stem, distance between stem and ventral processes. 251 Osbornellus remotus DeLong and Martinson (Figs. 169, 170)

Osbornellus remotus DeLong and Martinson, 1976b: 585.

Type locality: Mexico.

DESCRIPTION Vertex broadly angulate; median length distinctly less than distance between eyes at posterior margin. Pale apical spot with short, fat, curved lateral dashes not quite reaching ocelli. Pale diamond-shaped spot behind apex extended forward to apical spot. Above markings surrounded with brown. Narrow, straight brown line across vertex behind ocelli. Small oval orange spot on inner margin of each ocellus. White inverted "T"-shaped mark split by brown along coronal suture, margined with brown. Narrow white lines along inner margins of eyes extended straight mesad at anterior ends halfway to coronal suture. Pronotum mottled yellow-brown with thin faint white stripe down center and band of irregular light and dark marks along anterior margin. Light brown band down center of scutellum with p o sterio r h alf wide and margined laterally with brown, anterior half narrower with small brown dot on each la te r a l margin. Large brown spots in basal angles of scutellum, four longitudinal white dashes along anter ior margin, one white spot halfway along each lateral margin. Elytra transparent, yellowish, with few white spots and elongate brown patches. Veins brown. Tips heavily marked with brown. 250 RECOGNITION CHARACTERS Very short, fat pygofer; aedeagus similar to scalaris but dorsal projection straighter, stem and ventral processes more strongly curved, readily distinguishable; female 7th sternite more tru n cate than rounded.

SPECIMENS EXAMINED (15) GUATEMALA - Depto. Escuintla (2: USNM), Yepocapa (8: USNM). MEXICO - Chiapas: Finca Vergel (Holotype, allotype, 1 paratype: DMDC); Oaxaca; Tolosa (2 including 1 paratype: DMDC).

DISTRIBUTION Mexico, Guatemala. 249 Male pygofer sh o rt and broad, le ss than 1.5 times as long as greatest width; apical portion short, wide, longest on ventral side, tip broadly rounded. Plate and style usual shape. Aedea gus in ventral view (Fig. 167) wide at base, narrow lateral ex tensions of dorsal projection just showing to each side of ventral processes. Ventral processes slender, tapered, ap-. pressed, crossed just below narrow, pointed apices. In lateral view (Fig. 168), dorsal projection short, straight, widened at midlength, narrowed at tip. Main stem narrow, strongly curved dorsad, pointed at tip. Main stem narrow, strongly curved dor sad, pointed at tip. Ventral processes slender, very close to stem for most of length, apical thirds bent sharply caudad, apices pointed. Posterior margin of female 7th sternite broadly, very shal lowly concave, sides slanted. Length 5-5.5 mm.

TYPE MATERIAL Holotype male - Tag 1: Finca Vergel, Chiapas. V-23-35. M. F. 4273; Tag 2: A, Dampf, c o ll. (DMDC). Allotype female - same as holotype except V-ll-35, M. F. 4124. (DMDC). Paratypes - males and females from Finca Vergel (1 female DMDC; location of others unknown); !■ male from Tolosa, Oaxaca. (DMDC). 248 Osbornellus grandis DeLong (Figs. 167, 168)

Osbornellus grandis DeLong, 1942: 99; Metcalf 1965: 2189.

Type lo c a lity : Mexico.

DESCRIPTION Vertex broadly angulate; median length slightly less than distance between eyes at posterior margin. Pale apical spot with fat, curved lateral dashes reaching ocelli. Triangular white spot behind, and connected to, apical spot. Above markings sur rounded with dark brown. Brown spot behind each ocellus with pale spot on inner margin. Large orange spot to each side of anterior portion of coronal suture. White inverted "T^-shaped ' mark s p lit by brown along coronal su tu re, margined with brown. Thin pale lines along inner margins of eyes. Pronotum yellowish- brown with thin, faint white longitudinal stripe down center, band of irregular light and dark marks along anterior margin, Scutellum with broad lig h t brown band center, with brown on posterior halves of lateral margins. Large brown spots in basal angles, four short, longitudinal white dashes along anterior mar gin, one white triangular spot halfway along each lateral margin. Elytra transparent, yellow, with many white spots and- elongate brown patches. Veins brown. Tips margined with brown. Usual brown spots along costa and commissural lin e . 247 (1: CISC), Davenport (Is KSUC), Ensenada (1: HOCI), Pacific Grove (2: DMDC), Santa Cruz Mts. (1: KSUC). CONNECTICUT - Brookfield (1: AMNH). FLORIDA - Jacksonville (Is AMNH). MINNESOTA - Ramsev Co. (1: SEMC); countv undetermined: Taylor Falls (1: DMDC). NEW HAMPSHIRE - Franconia (1: AMNH), Mt. Washington (1: AMNH); locality unspecified (5: AMNH). NEW YORK - West Nyack (1: AMNH). OHIO - Bridgeport (1: DMDC), Hamilton (1: DMDC). OREGON - Hood River (Is OSUO). PENNSYLVANIA Honesdale (2: AMNH). TENNESSEE - Clarksville (2: DMDC), C olliersville (1: DMDC), Covington (1: DMDC), Knoxville (2: DMDC), Lexington (1: DMDC), Tullahoma (1: DMDC). VIRGINIA - Ch. Bridge (Is DMDC). WISCONSIN - S t. Croix F alls (1: AMNH) (1: DMDC), Trout * Lake (Is AMNH). MEXICO - Distrito Federal: Desierto de Los Leones (6: DMDC), Mexico City (Is DMDC); Mexico: Rio Frio (Is DMDC); Michoacan: Carapan (2: DMDC); Puebla: Necaxa (2: DMDC).

DISTRIBUTION Widespread over U. S. and in to Canada and Mexico. 246 pointed. Ventral processes slender, crossed halfway to tips; tips narrowed and turned caudad. In lateral view (Fig. 166), dorsal projection very long, curved caudad, rounded tip pointed dorsad. Main stem very slender, curved dorsad, tapered very slightly to rounded tip. Ventral processes slender, slightly separated from stem, parallel to stem for most of length, apical fourths bent caudad and tapered to sharp tips. Posterior margin of female 7th sternite very strongly, roundedly produced, with slight notch at center. Length 5 mm.

TYPE MATERIAL Lectoholotype male - California Coq. No. 605. (location unknown). Lectoallotype female - California Coq. No. 623. (location unknown).

RECOGNITION CHARACTERS Aedeagus resembling b o realis but more slender, ea sily d is tinguishable.

SPECIMENS EXAMINED (62) ARIZONA - Chiricahua Mts, (2: DMDC), Hualpai (1: DMDC), Tucson (1: DMDC). CALIFORNIA - Los Angeles Co. : Tanbark F lat (1: CISC); Mon terey Co. (2: HOCI); San Benito Co. (6: DMDC); San Diego Co. (1: ICCM); countv undeterminedt Atascadero (1: SEMC), Berkeley 245 X947: 198j Osborn and Knull 1947: 331; DeLong 1948: 207; Oman 1949: 122; Moore 1950a: 260, 1950b: 35; Wolfe 1955: 22; Metcalf 1965: 2195.

Type lo c a lity : C alifornia.

DESCRIPTION Vertex sharply angulate; median length distinctly greater than distance between eyes at posterior margin. Pale apical dot with slender, curved pale lateral dashes, elongate-triangular pale spot behind; ocelli and markings along anterior margin bor dered with brown. White inverted "T^-shaped mark s p lit by brown along coronal suture, margined with brown. Thin white lines along inner margins of eyes. Rest of vertex light brown. Pro- notum mottled lig h t brown with band of lig h t and dark spots along an terio r margin. Scutellum with lig h t brown band along center margined laterally with brown, large orange spots in basal angles ringed with brown, four short longitudinal white dashes along » % anterior margin, one white spot halfway along each lateral mar gin. Elytra tawny, pale yellow, with many white spots and elongate brown patches. Veins brown. Tips brown. Usual brown spots along costa and commissural line heavy. Male pygofer about twice as long as greatest width; apical portion short, wide, tapered to broadly rounded tip. Apical por tion of plate short, narrow, plumose. Style usual shape. Aedea gus in ventral view (Fig. 165) slender, narrowed slightly below lateral extensions of dorsal projection. Main stem narrow, 244 Osbornellus scalaris (Van Duzee) (Figs. 165, 166)

Osbornellus soalaris Van Duzee, 1890: 51, 1894a: 300; Uhler 1895: 77;-Osborn and Ball 1897: 232; Osborn 1900a: 198, 1900b: 68, 1900c: 11; Slosson 1902: 321; Woodworth 1903: 45; Osborn 1905a: 523, 1905b: 523; Tucker 1907: 67; Osborn 1909: 464; Van Duzee 1909a: 226; Crumb 1911: 234; Osborn 1911: 254; Woodworth 1913: 269; Barber 1914: 535; Van Duzee 1914: 54; Gibson and Cogan 1915: 76; Osborn 1910: 114; DeLong 1916: 56; Van Duzee 1916: 69; Lathrop 1917: 124; Sanders and DeLong 1917: 83; Van Duzee 1917a: 631, 1917b: 295; Downes 1919: 15; Lathrop 1919: 56; Lawson 1920: 127; Osborn 1921: 10; Lawson 1922: 333; Osborn 1922: 38; Readio 1922: 242; DeLong 1923b: 97, 1923c: 95; Buys 1924: 49; Weese 1924: 373; Van Duzee 1925: 419; Downes 1927: 18; Johnson 1927: 35; Stearns 1927: 11; Leonard 1928: 164; Osborn 1928: 258; Lawson 1929: 41, i.930: 38; Stevens 1931: 13; Ball 1932: 17; Lowry 1933: 63; Brimley 1938: 94; Procter 1938: 78; Essig and Usinger 1940: 165; Metcalf 1965: 2194. Osbornellus scalaris (Van Duzee). Knowlton 1934: 165; DeLong and Mohr 1936: 976; Knowlton and Allen 1936: 275; Beamer 1937: 102; DeLong and Caldwell 1937: 23; DeLong and Knull 1941: 177; DeLong 1942: 94; Moore 1944: 43; DeLong and Knull 1946: 32; Procter 1946: 90; Wene 1946: 132; Oman SPECIMENS EXAMINED (32) ARIZONA - Patagonia (Holotype: SEMC). MEXICO - D istrito Federal: Mexico City (21: DMDC) Jalisco: Guadalajara (8: DMDC); Veracruz: Jalapa (2: USNM)

DISTRIBUTION Arizona, Mexico. 242 and short, narrow, plumose apical portion; crenulate along middle of la te r a l margin. Style usual shape. Aedeagus in v en tra l view (Fig. 163) almost square at base, narrowed slightly below trun cate lateral extensions of dorsal projection. Main stem narrow with tip rounded. Ventral processes extremely narrow, appressed, apices pointed. In lateral view (Fig. 164), dorsal projection tapered, curved caudad. Main stem wide at base, gently tapered, curved dorsad, tip knobbed and rounded. Ventral processes ex tremely narrow, slightly separated from stem, apices almost touching knobbed tip of stem. Posterior margin of female 7th sternite strongly, roundedly produced, slightly notched at center. Length 5-5.5 mm.

TYPE MATERIAL Holotype male - Patagonia Ar. 6-24-33. R. H. Beamer. (SEMC). Allotype female - same as holotype. (SEMC). Paratypes - 1 male from Oak Creek Canyon, Ariz.; 2 males, 4 females from Patagonia, Ariz.; 1 female from Granite Dell, Ariz. (EDBC, SEMC).

RECOGNITION CHARACTERS Fusion of marks on vertex; white scutellum ; d is tin c tiv e shape of aedeagus. 241 Osbornellus lineatus Beamer (Figs. 163, 164)

Osbornellus lineatus Beamer, 1937: 106; DeLong and Caldwell 1937: 83; DeLong and Knull 1946: 32; Oman 1949: 122; Metcalf 1965: 2190.

Type lo c a lity : Arizona.

DESCRIPTION Vertex broadly angulate; median length about equal to dis tance between eyes at posterior margin. White markings at and around apex more-or-less fused, bordered with brown. Pale ocelli almost entirely ringed with brown, with pale spot just off inner margin of each. Brown transverse bar at apex of coronal suture. White inverted ,,T"-shaped mark bordered anteriorly with brown but lateral brown borders very faint, so "T,f fused with white lines along inner margins of eyes. Pronotum mottled lig h t brown with band of irregular light and dark marks along anterior margin. Scutellum white, slightly darkened at middle, with large orange spots in basal angles. Elytra transparent, pale yellow, with many white spots and brown patches. Tips brown. Usual brown spots along costa and commissural lin e (those along commissure I line faint). Male pygofer about 1.5 times as long as greatest width; apical portion narrow, somewhat rectangular, tip rounded at sides and slightly concave at middle. Plate with large basal portion 240 SPECIMENS EXAMINED (78) HONDURAS - Rancho Chiquita (14: DMDC). MEXICO - Chiapas: Finca Vergel (1 paratype of albocinctus. holotype and 2 paratypes of dicritus: DMDC); Distrito Federal: Mexico City (4: DMDC); Guerrero: Taxco (3: USNM); Hidalgo: Jacala (19: USNM); Michoacan: Rio Tuxpan (1: DMDC), Zitacuara (1: DMDC); Morelos: Cuernavaca (1: USNM); San Luis Potosi: Tamazunchale (14: USNM), Valles (4: USNM); Veracruz: Cordoba (1: DMDC), Jalapa (2: USNM); state unspecified (6: DMDC). PANAMA - Cerro Campana (1: USNM), Chica (1: DMDC), Lina (1: USNM), S ap o tilla (1: USNM).

DISTRIBUTION Mexico to Panama, 239 at tip. Style usual shape. Aedeagus in ventral view (Fig. 161) narrow at base, expanded and rounded at sides just below mid length, narrowed again below dorsal projection with short lateral extensions tapered sharply to basal margins. Ventral processes tapered, narrow, appressed, pointed at apices. In lateral view (Fig. 162), dorsal projection long, medium width, curved slightly caudad at tip. Main stem long, slender, curved dorsad, short pointed tip directed anteriorly. Ventral processes narrow, ap pressed to stem, ending just below apex of stem. Posterior margin of female 7th sternite evenly, rounded pro duced with slight notch at center. Length 5.5 mm. The types of Osbornellus digitus DeLong and Martinson have been examined by th e author and determined to be synonymous with albocinctus DeLong.

TYPE MATERIAL Holotype male - Finca Vergel, Chiapas, Mexico. May 13, 1935. Dr. Alphonse Dampf. (location unknown). Allotype female - same as holotype, (location unknown). Paratypes - males and females same as holotype. (1 male in DMDC; location of others unknown).

RECOGNITION CHARACTERS White scutellum; white at rear of vertex; shape of aedeagus. 238 Osbornellus albocinctus DeLong (Figs. 161, 162)

Osbornellus albocinctus DeLong, 1941b: 266; Metcalf 1965: 2179. Osbornellus dicritus DeLong and Martinson, 1976b: 584. (Type lo c a lity : Mexico). NEW SYNONYMY.

Type locality: Mexico,

DESCRIPTION Vertex roundedly angulate; median length slightly less than distance between eyes at posterior margin. White apical spot with pale, slightly curved dashes to sides, fattened at middle and reaching o c e lli. Large tria n g u la r spot behind, and connected to, apical spot. Ocelli and above-mentioned markings surrounded with brown. Brown spot behind each ocellus with pale spot on inner margin. Short, wide, transverse brown bar at apex of coro nal suture. Large, almost triangular orange spot to each side of apicai portion of coronal suture ringed with*brown. Rest of vertex white. Pronotum whitish-yellow with band of irregular light and dark spots along anterior margin. Scutellum white with large brown spots in basal angles. Elytra transparent, yel lowish, with many white spots and oblong brown patches. Veins brown. Usual brown spots along costa and commissural lin e . Male pygofer about 1.5 times as long as greatest width; apical portion wide, almost square, tip slightly concave. Plate with basal portion large, apical portion short, narrow, plumose 237 and shorter than stem. (Description of aedeagus taken from DeLong 1942). Posterior margin of female 7th sternite slightly concave to each side of short, very broad, truncate median projection. Length 5.5 mm.

TYPE MATERIAL Holotype male - Tag 1: Tamazunchale, Mex. 11-15-38; Tag 2: J. S, Caldwell coll. (DMDC). (genitalia missing). Allotype female - M. F. 4193. Vergel, Chis. V-16-'35. (DMDC). Paratypes - 3 females same as allotype. (DMDC).

RECOGNITION CHARACTERS Unusual markings on vertex; shape of aedeagus distinctive.

SPECIMENS EXAMINED (6) MEXICO - Chiapas: Finca Belem (1: DMDC), Finca Vergel (Allotype, 3 paratypes: DMDC); San Luis Potosi: Tamazunchale (Holotype: DMDC).

DISTRIBUTION Mexico. 236 Osbornellus nicrrocinctus DeLong

Osbornellus nicrrocinctus DeLong, 1942: 96; Metcalf 1965: 2191.

Type locality: Mexico.

DESCRIPTION Vertex angulate; median length about equal to distance be tween eyes at posterior margin. Ocelli large, pale. Whitish apical dot with short, fat, slightly curved lateral dashes. White diamond-shaped dot behind and connected to apical dot. Small round orange dot just inside each ocellus. Dark brown filling in apical half of vertex around above-mentioned markings. Posterior half of vertex mostly white, with orange dot to each side of anterior portion of coronal suture ringed with brown, and narrow brown line along median half of posterior margin. Prono- i turn mottled light brown with band of irregular white and dark spots along anterior margin. Scutellum with wide light brown band down center marked with th in brown lin es along p o sterio r halves of la te r a l margins and small brown dot on each la te r a l margin one-fourth distance from base. Elytra transparent, yel- t lowish, with many white spots, few oblong brown patches. Veins brown. Large brown spots on c o stal v e in le ts, fa in t brown dots at apices of claval suture and claval veins. Aedeagus in lateral view with dorsal projection thick, thumblike, enlarged at apex, with short tooth on caudal margin. Main stem long, broad, curved dorsad. Ventral processes narrow 235 projection. Main stem narrow, pointed. Ventral processes longer than stem, slightly separated, narrow on basal two-thirds, apical thirds slightly expanded and divergent with pointed apices. In lateral view (Fig. 160), dorsal projection very long, medium width, curved caudad, rounded at tip. Main stem narrow, curved dorsad, pointed at tip. Ventral processes wide on basal two- thirds, started caudad then curved dorsad, sharply narrowed and bent anteriorly at two-thirds their length forming long, narrow, pointed apices. Female unknown. Length 5 mm.

TVPE MATERIAL Holotype male - Piracicaba, Brazil. 11-12-65. coll. C. A. Triplehorn. (DMDC).

RECOGNITION CHARACTERS Band along anterior margin of vertexj distinctive shape of aedeagus.

SPECIMENS EXAMINED (1) BRAZIL - Piracicaba (Holotype: DMDC).

DISTRIBUTION B razil. 234 Osbornellus camptus n. sp. (Figs. 159, 160)

Type lo c a lity : B razil.

DESCRIPTION Vertex broad, rounded; median length slightly less than dis tance between eyes a t p o sterio r margin. Narrow yellow ish band along anterior margin connecting ocelli, slightly swollen at middle of each side, bordered above and below with dark brown line. Triangular white spot behind apex narrowly connected to pale marginal band. White inverted ,lTll-shaped mark bordered with brown along anterior margins. Rest of vertex yellowish. Rponotum mottled lig h t brown with band of irre g u la r lig h t and dark spots along anterior margin. Scutellum with wide light brown band down center, large orange spots in basal angles, four short longitudinal white dashes along anterior margin, one small white dot halfway along each lateral margin. Elytra trans parent, yellow, with some white spots and brown patches. Some round white dots margined with brown in ap ical c e lls . Veins brown. Brown spots at apices of claval suture, claval veins and costal veinlets. Male pygofer short and f a t, l i t t l e more than 1.5 times as long as greatest width; apical portion short, wide, truncate. Apical portion of plate somewhat short. Style usual shape. Ae deagus in ventral view (Fig. 159) almost square at base, narrowed slightly just below short, pointed lateral extensions of dorsal 233 USUC); Washington Co.: Leeds Can. (1: USUC); oountv undetermined: Cedar City (3: USUC), Cove Fort (1: USUC), Current Creek (1: USUC), Hooper (1: USUC), Logan Mt. (1: DMDC) (1: USUC). WASHINGTON - Paoifio Co.: Long Beach (1: OSUO); countv undetermined: Republic (2: OSUO) (1: SEMC). WYOMING - Grand Teton Mt. Pk. (1: SEMC). CANADA - Alberta: Beaverlodge (1: CNCI), Lethbridge (1: CNCI); B ritish Columbia: Cowichan (1: CNCI), Cranbrook (Holo type: DMDC), Creston (1: CNCI), Enderby (2: CNCI), Hope (3: SEMC), Invermere (1: CNCI), Kelowna (2: SEMC), Keremeos (1: CNCI), Kersby (2: CNCI), Long Beach (2: CNCI), Lytton (7: SEMC), M erritt (25: SEMC), Okanagan Mission (28: CNCI), Oliver (1: CNCI), (1: SEMC), Penticton (4: CNCI), Quesnal (7: CNCI), Soda Creek (18 including allotype: CNCI), Squamish (1: CNCI), Vernon (1: SEMC); Saskatchewan: Elbow (1: CNCI), Saskatoon (4: CNCI).

DISTRIBUTION Western U. S. and Canada. 232 RECOGNITION CHARACTERS Similar to scalaris but without orange on vertex, main stem and ventral processes of aedeagus not as slender; genitalia dis tin c tiv e .

SPECIMENS EXAMINED (232) ARIZONA - Grand Canyon (Is SEMC), Miami (5: SEMC), Oak Creek Canyon (11: HOCI) (1: SEMC), Williams (6: HOCI). CALIFORNIA - Alameda Co. (Is SEMC); countv undetermined: Golden Gate (2: SEMC), Mt. St. Helena (1: HOCI). COLORADO - F t. C ollins (Is KSUC) (1: SEMC), Glenwood Springs (1: SEMC), Foudre R. Can. (3: SEMC). GEORGIA - Dalton (1: OSUO). IDAHO - Franklin Co.: Mink Creek (1: USUC); Oneida Co.: Holbrook (2: USUC). MONTANA - Benton Co.: Mary's Peak (1: OSUO); county unde termined : Bozeman (2: SEMC), Haugan (4: SEMC), Missoula (5: SEMC).* NORTH CAROLINA - Onslow (1: USUC). OREGON - Josephine Co.: O'Brien (3: OSUO); Lincoln Co. : Corvallis (IS: OSUO), Grass Mt. (3: OSUO); Tillamook Co. (1: OSUO); county undetermined: Ashland (1: OSUO), Bend (1: OSUO), Enterprise (1: OSUO), Hood River (1: OSUO), Pendleton (1: SEMC). UTAH - Box Elder Co. : Mantua (1: USUC), W illard Basin (4: USUC); Cache Co.: Blacksmith Fork (5: USUC), Green Can. (14: 231 costa and commissural line. Male pygofer about twice as long as greatest width, rounded on ventral margin; apical portion short, wide, sides rounded to broadly rounded tip. Plate and style usual shape. Aedeagus in ventral view (Fig. 157) slightly expanded above narrow base, then sharply tapered to form slender main stem with rounded tip. Ven tral processes medium width, slightly separated, straight on basal three-fourths, apical portions tapered and crossing near tip of main stem, tips pointed. In lateral view (Fig, 158), dorsal projection long, slender, bent caudad. Main stem fairly wide, tapered slightly, curved dorsad, tip roundedly pointed. Ventral processes longer than stem, slender, close to stem throughout length, with apical portions tapered, crossed, curved dorsad. Posterior margin of female 7th sternite (Fig. 231) sinuate, slightly concave to each side of short,- rounded, median projection, (female here described). Length 5 mm.

TYPE MATERIAL Holotype male - Cranbrook, B. C. 9-4-19. (DMDC). Allotype female - Tag 1: W. B. Tests 87. Soda Creek, B. C. 25-VIII-1951. H. R. MacCarthy; Tag 2: On range grass. (CNCI). (allo ty p e here designated). 230 Osbornellus borealis DeLong and Mohr (Figs. 157, 158, 231)

Osbornellus b o realis DeLong and Mohr, 1936: 976; Beamer 1937: 108; DeLong and Beery 1937: 266; DeLong. and Caldwell 1937: 23; DeLong and Knull 1946: 32; Hayward 1948: 503; Oman 1949: 122; Kaloostian 1952: 20; Waddell 1952: 95; Wolfe 1955: 22; Metcalf 1965: 2184.

lype locality: British Columbia.

DESCRIPTION Vertex angulate, slightly rounded at sides; median length slightly greater than distance between eyes at posterior margin. General yellowish-brown color, markings rather indistinct. Pale ocelli, pale round apical dot with short, curved pale lateral dashes and pale line behind connecting it to triangular pale spot, all surrounded with brown. White inverted "T,,-shaped mark margined with brown. Thin pale lines along inner margins of eyes. Rest of vertex yellowish-brown. Fronotum mottled yellow- brown with brown band along anterior margin. Scutellum with broad, light yellowish-brown stripe down center margined later ally with brown, large orange spots in basal angles margined with brown, four faint white spots along anterior margin, one faint white spot halfway along each lateral margin. Elytra transpar ent, yellowish with much white. Several cells with oblong brown patches. Veins brown. Tips brown. Usual brown spots along SPECIMENS EXAMINED (7) ARIZONA - Chiricahua Mts. (3: HOCI), Williams (4: HOCI)

DISTRIBUTION Southwestern U. S. 228 broad, apical portion shcrt, narrow, plumose. Style usual shape. Aedeagus in v en tra l view (Fig. 155) wide and rounded a t base then narrowed below lateral extensions of dorsal projection just showing to each side of ventral processes. Ventral processes long, slender, appressed, tapered at apices. In lateral view (Fig. 156), dorsal projection long, slender, curved caudad then dorsad at tip. Main stem long, medium width, curved dorsad, slightly expanded at rounded tip . Ventral processes long, nar row, separated from stem, curved dorsad, tips pointed and curved caudad. Posterior margin of female 7th sternite strongly, roundedly produced, somewhat flatten ed a t middle. Length 5-5.5 mm.

TYPE MATERIAL Holotype male - Monument, Colo. August 19, 1936. R. H. Beamer. (SEMC). Allotype female - same as holotype. (SEMC). Paratypes - 3 males same as holotype; 2 males, 7 females from Chiricahua Mts., Ariz.; 1 male from Silver City, N. M.; 1 male from Huachuca M ts., A riz.j 1 male from Long Valley, Ariz. (EDBC, SEMC).

RECOGNITION CHARACTERS Reduced "Tn-shaped mark on vertex; d is tin c tiv e shape of aedeagus. 227 Osbornellus fumidus Beamer (Figs. 155, 156)

Osbornellus fumidus Beamer, 1937: 104; DeLong and Caldwell 1937: 83; DeLong and Knull 1946: 32; Qnan 1949: 122; Metcalf 1965: 2189.

Type locality: Colorado.

DESCRIPTION Vertex roundedly angulate; median length distinctly less than distance between eyes at posterior margin. Pale apical spot with pale, slender, slightly curved lateral dashes reaching ocel li, pale, slender, longitudinal dash to rear, these markings and ocelli surrounded with brown. Inverted ,fTM-shaped mark reduced to two white spots bordered with brown midway between p o sterio r portions of coronal suture and eyes. Rest of vertex yellowish- brown. Pronotum mottled brown with row of lig h t and dark spots along'anterior margin. Scutellum light brown with large orange spots in basal angles, white spots at middle and at basal end of each lateral margin separated by dark brown spots. Elytra transparent, yellow ish, with, many white spots and oblong brown patches. Veins brown. Tips brown. Usual brown spots along costa and commissural lin e . Male pygofer distinctly less than twice as long as greatest width, rounded on ventral margin; apical portion short, wide, tapered gently to broadly rounded tip. Plate with basal portion Mafeking (3: SEMC), Morris (1: SEMC), Russell (1: SEMC), Winnipeg (2: CNCI); Ontario: Carp (1: CNCI), Constance Bay (1: CNCI), Ipperwash P. Fk. (2: CNCI), Marmora (1: CNCI), Maynooth (2: CNCI), Queensville (1: CNCI), Robeson (1: CNCI), Trenton (1: CNCI); Quebec: Berthiersville (1: CNCI), King Mt:. (1: CNCI), Kirks Ferry (2: CNCI), Lac Mondor (14: CNCI), Rigaud (1: DMDC), Wakefield (3: CNCI); Saskatchewan: Indian Head (1: CNCI), Pike Lake (Is CNCI), Saskatoon (2: CNCI), Wenoncha (1: CNCI).

DISTRIBUTION Widespread throughout U. S. and Canada; mostly in eastern sectio n s. 225 NORTH CAROLINA - Black Mts. (1: HOCI), Franklin (2: SEMC), L. Toxaway (1: AMNH), Tryon (1: HOCI), Walnut (1 homotype: SEMC). NORTH DAKOTA - Leonard (2: SEMC). OHIO - Adams Co. (4: HOCI)j Athens Co. (1: HOCI); Delaware Co. (15: HOCI); F airfield Co. (11: HOCI); Franklin Co. (6: HOCI); Hocking Co. (11: HOCI); Licking Co. (2: HOCI); Medina Co. (1: HOCI); Ross Co. (1: HOCI); countv undetermined: Apple Grove (1: HOCI), Ashtabula (1: HOCI), Granville (1: HOCI), L ittle Mt. (3: HOCI), Oxford (1: HOCI). OREGON - Portland (1: SEMC). PENNSYLVANIA - Hartstown Bg. (4: DMDC), Honesdale (1: HOCI), Kane (4: DMDC), N. Bloomfield (1: DMDC), Ohio ly ie (1: ICCM) (1: SEMC), Port M atilda (1: DMDC), P t. Royal (1: DMDC). SOUTH CAROLINA - T ig erv ille (1 homotype: SEMC). TENNESSEE - C lark sv ille (1: KSUC). TEXAS - Brazoria Co. (1: SEMC); Hidalgo Co. (1: SEMC); oountv undetermined: Brownsville (1: HOCI), Castroville (1: SEMC), D evil's River (1: HOCI), Romney (1: SEMC). WASHINGTON - Pullman (2: HOCI). WISCONSIN - Amery (1: DMDC), Brule (13: SEMC), Florence (3: SEMC), Pembina (1: DMDC), Reedsburg (1: FSCA), Rib Mt. St. Pk. (1: SEMC), St. Croix Falls (8: DMDC), Trout Lake (4: DMDC), Woodruff (1: DMDC). CANADA - Manitoba: Awene (1: CNCI), Cowan (1: SEMC), Deepdale (5: SEMC), Hartney (3: SEMC), Kald (2: SEMC), 224 COLORADO - Rabbit Ears Pass (1: USUC).. CONNECTICUT - New Haven (Homotype: SEMC), S torrs (1: SEMC). DISTRICT OF COLUMBIA - Washington (1: FSCA), lo catio n unspecified (1: HOCI). FLORIDA - Cannon Pt. (2: HOCI), Oviedo (1: HOCI), Sanford (3: HOCI). GEORGIA - A tlanta (1: DMDC), Prattsburg (Homotype: DMDC). ILLINOIS - Willow Springs (1: FMNH). IOWA - Ames (1: FSCA). KANSAS - Douglas Co. (1: SEMC). MARYLAND - Plummer's Id . (2: SEMC). MICHIGAN - Cedar River (2: SEMC), Cheboigan (1: SEMC), Douglas Lake (1: SEMC), Lake Gogebic (1: SEMC), Thompson (3: SEMC). MINNESOTA - Bena (1: SEMC), Cooley (2: SEMC), Erskine (1: SEMC), Eveleth (2: SEMC), Fairbanks (1: SEMC), Itasca Park (13: SEMC), Shevlin (7: SEMC), Two Harbors (14: SEMC), Willow River (2 homotypes: SEMC). MISSISSIPPI - Iuka (2 homotypes: SEMC). NEW HAMPSHIRE - Notchland (2 homotypes: SEMC). NEW MEXICO - Jersey Spgs. (1: DMDC), White Sands (1: SEMC). NEW YORK - Franklin Co. (1: FMNH); county undetermined: Bear Mts. (1: AMNH). 223 dorsad, tip rounded* Ventral processes wide at base, spine ari sing about two-fifths distance along ventral margin of each pro cess, rest of process narrowed above spine then expanded before tapering into long, narrow pointed apex. Dentation on ventral margins of expanded areas between spines and apices. Posterior margin of female 7th sternite rounded at sides, flat along middle half with slight rounded notch at center. Length 5.5 mm.

TYPE MATERIAL Lectoholotype female - "Scaphoideus consors Uhler Spice B. Halls sp." (USNM - designated by Beamer, 1937). Lectoallotype male - Vienna, Va., J. C. Bridwell, Sept. 1, 1932. (SEMC - designated by Beamer, 1937).

RECOGNITION CHARACTERS Aedeagus similar to corniaer but stem wider in lateral view, dentation distinguishable.

SPECIMENS EXAMINED (276) ARKANSAS - Polk Co. (Hcmotype: SEMC). ARIZONA - Coconino Co. (1: SEMC): Yavapai Co. (1: SEMC); county undetermined: Chiricahua Mts. (2: SEMC), Grand Canyon (1: SEMC), Oak Creek Canyon (1: SEMC), Sabino Canyon (5: SEMC). CALIFORNIA - Orange Co. (1: SEMC); county undetermined: Santa Cruz Mts. (1: HOCI), Sargent (1: SEMC). 222 DESCRIPTION Vertex angulate; median length slightly less than distance between eyes at posterior margin. Pale apical spot connected to curved pale dash to each side along anterior margin and elongate-? triangular spot behind, all surrounded with brown. Pale ocelli ringed with brown. Faint white inverted nT"-shaped mark split by brown along coronal suture, margined with brown. Faint light lines along inner margins of eyes. Rest of vertex yellow ish. Pconotum mottled brown with band of light and dark spots along anterior margin. Scutellum with broad light brown band down center margined laterally with brown; large brown spots in basal angles, four white spots along anterior margin, one white spot halfway along each lateral margin. Elytra transparent, pale whitish-yellow. Veins dark yellow, some near tips brown. Usual brown spots along costa and commissural line. Male pygofer less than twice as long as greatest width, rounded along ventral margin; apical portion short, wide, with broadly rounded tip. Plate and style usual shape. Aedeagus in ventral view (Fig. 153) slender at base, expanded apically. Main stem extremely narrow and pointed. Ventral processes arising at about two-fifths of total length, widely separated, tapered and divergent; long thin pointed spine at one-fourth distance along each inner margin directed caudad, dentation along apical halves of inner margins, apices narrow and pointed. In lateral view (Fig. 154), dorsal projection long, slender, turned slightly caudad. Main stem broad, tapered only slightly near base, curved 221 Osbornellus oonsors (Uhler) (Figs. 153, 154)

Scaphoideus consors Uhler, 1889: 36; Van Duzee 1890: 52, 1894a: 300; Osborn 1900a: 196; Smith 1900: 96; Henshaw 1903: 225; Wirtner 1904: 224; Osborn 1905a: 523, 1905c: 523; Van Duzee 1909a: 226; Smith 1910: 105; Crumb 1911: 234; Osborn 1911: 254; Barber 1914: 534; Metcalf 1915: 55; Van Duzee 1916: 69, 1917a: 631; Britton 1920: 49; Osborn 1921: 10; Lawson 1922: 333; DeLong 1923b: 97; Van Duzee 1923: 177; Buys 1924: 48; Stearns 1927: 11; Leonard 1928: 164; Osborn 1928: 258; Brimley 1938: 93; DeLong 1939: 33; Metcalf 1965: 2185. Osbornellus consors (Uhler). Ball 1932: 17; Knowlton 1935: 111; Knowlton and Allen 1936: 275; Beamer 1937: 107; DeLong and Beery 1937: 266; DeLong and Caldwell 1937: 23; Oman 1938: 369; Brown 1939: 665; DeLong 1941b: 267; Padley 1941: 393; DeLong 1942: 92; Medler 1943: 54; DeLong and Knull 1946: 32; Wene 1946: 132; Dowdy 1947: 429; Osborn and Knull 1947: 331; DeLong 1948: 207; Qnan 1949: 122; Moore 1950a: 260, 1950b: 35; Young 1950: 66; Fattig 1955: 46; Wolfe 1955: 22; Metcalf 1965: 2186.

Type lo c a lity : V irginia. 220 SPECIMENS EXAMINED (21) MEXICO - Guerrero: Iguala (7 including 1 paratype: DMDC),

Mezcala (4: DMDC), Pandancuarco (1: DMDC); Michoacan: 2 Titz io (1: UMMZ); Oaxaca: El Cameron (5: TAMU); Puebla: Tehuacan (1: DMDC); Tamaulioas: El Mante (2: DMDC),

DISTRIBUTION Mexico. 219 main stem showing between very narrow, pointed, divergent apices of ventral processes. Ventral processes fused basally. In lateral view (Fig. 152), basal portion very long, narrow, straight. Dorsal projection arising about halfway along dorsal margin. Main stem and v en tral processes fused fo r one-third their length. Main stem beyond fusion slender, straight caudad on basal half then bent dorsad, tip rounded. Ventral processes wide just above fusion with stem, tapered gradually to sharply pointed apices tilted dorsad. Posterior margin of female 7th sternite with median tooth, longer than wide and roundedly truncate at tip. Length 5 mm.

TYPE MATERIAL Holotype male - Balsas, Guerrero, Mexico, August 15, 1936, J. Parra, (location unknown). Allotype female - Finca Vergel, Chiapas, Mexico, May 19, 1935. * (lo catio n unknown). Paratypes - males and females from Balsas, Iguala, Cocula, Huitziltepec and Mezcala, all in Guerrero, Mexico. (1 male from Iguala in DMDC; location of rest unknown).

RECOGNITION CHARACTERS Rounded vertex with three arms of apical spot; odd shapes of pygofer and aedeagus. 218 Osbornellus appressus DeLong (Figs. 151, 152)

Osbornellus qppressus DeLoncr. 1942: 94; Metcalf 1965: 2179.

i Type lo c a lity : Mexico.

DESCRIPTION Vertex rounded; median length about equal to distance be tween eyes at posterior margin. Pale apical spot with narrow pale arms extending along anterior margin almost to ocelli and somewhat wider arm extending p o sterio rly ; o c e lli, a p ic a l spot and its lateral arms all surrounded with brown. Light brown areas mesad of ocelli blending into orangish areas posteriorly. White inverted l,TH-shaped mark bordered with brown. Narrow white lin e s along inner margins of eyes. Pronotum mottled brown with band of irregular light and dark spots along anterior margin. Scutellum with broad light brown band down center margined later a lly with brown on p o sterio r h a lf; larg e brown spots in basal angles, four small white dots along anterior margin, one white dot halfway along each lateral margin. Elytra transparent, largely whitish. Several cells with elongate brown spots. Usual brown spots along costa and commissural lin e . Male pygofer about twice as long as greatest width, shaped almost like parallelogram; apical portion very short, roundedly tria n g u la r. P late and sty le usual shape. Aedeagus in ventral view (Fig, 151) long, straight, very narrow, with rounded tip of 217 view (Fig. 149), basal portion long and narrow. Dorsal projec tion slender, curved very slightly caudad, rounded at tip. Main stem slender, tapered only slightly near base, curved ventrad then sharply dorsad, tip rounded and slightly knobbed. Ventral processes slender, straight, directed dorso-caudad, cutting across view of stem, apices pointed. Female unknown. Length 4.5 mm.

TYPE MATERIAL Holotype male - Big Bend Nat. Fk. TEXAS. Maverick. 2700*. May 4, 1959. Howden and Becker. (CNCI).

RECOGNITION CHARACTERS Very broad vertex with faded markings; general pale color; shape of aedeagus distinctive.

SPECIMENS EXAMINED (1) TEXAS - Big Bend Nat. Fk. (Holotype: CNCI).

DISTRIBUTION Texas. 216 Osbornellus cvrtooaulus n. sp. (Figs. 148-150)

Type lo c a lity : Texas.

DESCRIPTION Vertex very broad, rounded; median length much less than distance between eyes at posterior margin. Wide brown band along anterior margin marked with orangish ocelli, long slender pale dashes on sides meeting in apical dot, pale dot behind apex. Light brown transverse area at apex of coronal suture. Rest of vertex whitish with large brownish spot near inner margin of each eye. Pronotum light yellowish-brown with irregular mottling along anterior margin. Scutellum yellowish down center with large darker yellow spots in basal angles, four small white spots along anterior margin and one white spot halfway along each lateral margin. Markings suffused and indistinct. Elytra trans parent, very pale whitish-yellow. Several round white spots margined with brown near tips. Veins light brown. Male pygofer sh o rt and wide, about 1.5 times as long as greatest width, rounded along ventral margin; apical portion short, wide, tapered slightly to widely rounded tip. Plate with very short, narrow apical portion. Apical portion of style quite short, pointed, almost straight (Fig. 150). Aedeagus in ventral view (Fig, 148) narrow at base, then rounded out. Main stem slender, rounded at tip. Ventral processes widely separated, slender, pointed straight caudad, slightly sinuate. In lateral 215 TYPE MATERIAL Holotype male - Huachuca M ts., A riz. June 15, 1930. E. D. B all. (EDBC). Allotype female - same as holotype. (EDBC). Paratypes - 1 same as holotype; 4 same except Aug. 2, 1931; 1 from Chiricahua Mts., Ariz., 2 from Santa Rita Mts., Ariz. (EDBC).

RECOGNITION CHARACTERS Narrow lin es on an terio r margin of vertex; general tawny color; narrow apical portion of pygofer; narrow, plumose apical portion of plate; stout ventral processes of aedeagus.

SPECIMENS EXAMINED (53) ARIZONA - Chiricahua Mts. (5: DMDC) (4: HOCI), Huachuca Mts. (14: CNCI) (Holotype, allotype, 2 paratypes of knulli: DMDC) (11: HOCI), Santa R ita Mts. (2: DMDC) (3: HOCI) (10: SEMC).

DISTRIBUTION Arizona. 214 brown. Tips brown. Usual brown spots along co sta and commissur a l lin e . • Male pygofer long and slender, more than twice as long as greatest width; apical portion narrow, tapering, concave on dorsal margin, convex on ventral margin, tip rounded. Plate usual shape, plumose a t t ip . S ty le usual shape, somewhat sto u t. Aedeagus in v en tral view (Fig. 146) squared a t base. V entral processes arising near base, wide, tapered slightly on basal halves, expanded slightly along apical halves before tapering to pointed apices, crossing below tips. In lateral view (Fig. 147), dorsal projection short, narrow, pointed, curved slightly caudad. Main stem stout at base, tapered slightly to rounded tip, curved dorsad. Ventral processes separated from stem, wide, pointed caudad then bent back upon themselves dorsad and mesad at one-fourth their length so that ventral margins at base be come dorsal margins apically, tips pointed. Posterior margin of female 7th sternite produced to form short, broad, rounded median projection with slight notch at cen ter. Length 5.75-6 mm. The types of Osbornellus knulli DeLong and Beery have been examined by the author and determined to be synonymous with ritanus Ball. 213 Osbornellus ritanus Ball (Figs. 146, 147)

Osbornellus ritanus Ball, 1932: 17; Beamer 1937: 95; DeLong and Caldwell 1937: 23; DeLong and Knull 1946: 32; Oman 1949: 122; Metcalf 1965: 2192. Osbornellus knulli DeLong and Beery, 1937: 266; DeLong and Caldwell 1937: 23; DeLong and Knull 1946: 32; Oman 1949: 122; Metcalf 1965: 2190. (Type locality: Arizona). NEW SYNONYMY.

lype locality: Arizona.

DESCRIPTION Vertex rather broad, angulate; median length slightly less than distance between eyes at posterior margin. Thin, pale band along anterior margin between ocelli, bordered above and below with thin brown parallel lines. Faint white triangular spot just behind marginal lines at center. White inverted nT"-shaped mark bordered along anterior margins with brown. Rest of vertex light yellow-brown. Pronotum mottled lig h t brown with band of lig h t and dark spots along anterior margin. Scutellum with wide light brown band along center including two small round brown dots near anterior margin; large yellowish-brown spots in basal an gles, four white spots along anterior margin, one white spot halfway along each lateral margin. Elytra transparent, whitish- yellow. Few cells with elongate brown patches. Veins light DISTRIBUTION Honduras. 211 Plate with broad basal portion, short, narrow apical portion. Style usual shape; apical portion long. Aedeagus in ventral view (Fig. 144) wide, tapered slightly, then narrowed just below la teral extensions of dorsal projection. Main stem long, slender, straight. Ventral processes very narrow, almost straight, nar rowly separated, almost as long as stem, apices pointed. In lateral view (Fig. 145), dorsal projection long, medium width, curved caudad, tip rounded. Main stem long, fairly stout, bent sharply dorsad just above base then curved anteriorly near slightly expanded, rounded tip. Ventral processes long, narrow, pointed, lying next to stem and not quite reaching its apex. Female unknown. Length 5.5 mm.

TYPE MATERIAL Holotype male - HONDURAS. Dept. MORAZAN. Cerro Uyuca, 6000-61001. (cloud forest). Aug. 8, 1948. T. H. Hubbell. 205. XUMMZ).

RECOGNITION CHARACTERS Vertex with bright, distinct markings; aedeagus distinctive, with stout, round-tipped main stem and very narrow, pointed ven tral processes.

SPECIMENS EXAMINED (1) HONDURAS - Cerro Uyuca (Holotype: UMMZ). 210 Osbornellus chromatus n. sp. (Figs. 144, 145)

Type lo c a lity : Honduras

DESCRIPTION Vertex broadly angulate; median length about equal to dis tance between eyes at posterior margin. Pale ocelli, pale apical dot connected to triangular pale dot behind, oblong orange dots halfway between apical dot and eyes, all heavily bordered with dark brown. Dark brown spot behind each ocellus with narrow oblong pale dot on inner margin. Large orange area to each side of apical half of coronal suture. White ,,T"-shaped mark split by brown along coronal suture, cross-bar margined with brown. Two white spots along inner margin of each eye. Pronotum mottled yellow-brown with thin, faint white longitudinal stripe at cen ter, band of irregular light and dark spots along anterior mar gin. Scutellum with broad light brown band down center margined * laterally with brown; large yellowish-brown spots in basal angles, four short, thin, longitudinal dashes along anterior margin, one white dot halfway along each lateral margin. Elytra transparent, yellowish, with many white spots and elongate brown patches. Veins brown. Brown spots at apices of claval suture and claval veins. Anterior margins almost entirely lined with brown. Tips margined with brown. Male pygofer slightly less than twice as long as greatest width; apical portion short, almost square, tip slightly concave. 209 Aedeagus in lateral view (Fig. 143) with dorsal projection long, swollen at middle, pointed dorsad. Main stem very wide on basal one-third, then tapered sharply to narrow apical portion pointed at tip, curved dorsad. Mo ventral processes. Posterior margin of female 7th sternite strongly, roundedly produced. Length 5.5 mm.

TYPE MATERIAL Holotype male - Finca Vergel, Chiapas, Mexico. June 2, 1935, (location unknown). Allotype female - same except May 13, 1935. (location un known). Paratypes - males and females from Santa Ana, Chiapas, Mexico and from Panama. (1 paratype from Panama labeled male but with abdomen missing in DMDC; location of rest unknown).

RECOGNITION CHARACTERS « White, unmarked apical third of vertex very distinctive.

SPECIMENS EXAMINED (1) PANAMA - Cerro Punta (1 paratype: DMDC).

DISTRIBUTION Mexico to Panama. 208 Osbornellus apicatus DeLong (Fig. 143)

Osbornellus apicatus DeLoncr. 1941b: 268 j Linnavuori 1959: 212 j Metcalf 1965: 2179. Osbornellus anicalis DeLong, 1976: 265. (wrongly proposed as new name for apicatus).

Type locality: Mexico.

DESCRIPTION Vertex wide, bluntly angulate; median length slightly less than distance between eyes at posterior margin. Anterior third (from apex to line between ocelli) white, unmarked. Square black dot behind each ocellus. Wide brown bar across median half of vertex at apex of coronal suture. White inverted "T^-shaped mark split by brown along coronal suture, margined with brown. Two white spots along posterior half of inner margin of each eye. Rest o'f vertex orange. Ptonotum mottled light brown with band of light and dark spots along anterior margin. Scutellum with wide light brown band down center margined laterally with brown, yellowish-brown spots in basal angles margined with brown, four longitudinal white spots along anterior margin, one white spot halfway along each lateral margin. Elytn?a transparent, yellow ish, with several white spots and elongate brown patches. Veins brown. Usual brown spots along co sta and commissural lin e . 207 separated, apices pointed. In lateral view (Fig. 142), dorsal projection long, slender, curved caudad, rounded at tip. Main stem long, slender, parallel-sided, curved dorsad, rounded at tip. Ventral processes longer than stem, slender, appressed to stem for most of length, apical thirds tapered to narrow apices and slightly curved caudad. Posterior margin of female 7th sternite strongly produced, sides rounded, middle very broadly angulate. Length 5 mm.

TYPE MATERIAL Holotype male - Chiricahua Mts., Ariz. Aug. 23, 1931. E. D. B all. (EDBC). Allotype female - same as holotype. (EDBC). Paratypes - 8 same as holotype, 4 same except July 26, 1935. (SEMC, USNM).

RECOGNITION CHARACTERS « Appearance very distinctive with yellow to reddish-brown color, few faint markings, white stripe on elytra.

SPECIMENS EXAMINED (3) ARIZONA - Chiricahua Mts. (1: HOCI) (Holotype, 1 paratype: USNM).

DISTRIBUTION Arizona. 206 Osbornellus icmavus Ball (Figs. 141, 142)

Osbornellus icmavus Ball, 1936: 18; Beamer 1937: 96; DeLong and Caldwell 1937: 23; DeLong and Knull 1946: 32; Oman 1949: 122; Metcalf 1965: 2189.

Type locality: Arizona.

DESCRIPTION Vertex broadly pointed; median length distinctly less than distance between eyes at posterior margin. Bright yellow with faint white line along anterior margin between ocelli, faint white spot behind apex, four faint white longitudinal spots along posterior margin. Pronotum orangish-brown with thin lighter orange band along anterior margin. Scutellum orange with darker orange spots in basal angles. Elytra transparent, yellowish, with broad white band along commissural line and sides of scu tellum*. Brown dots at apices of two claval veins. Male pygofer s lig h tly more than 1.5 times as long as g reat est width; apical portion short, wide, tapered to broadly rounded tip. Plate with wide basal portion and short, narrow apical portion. S£yle usual shape, apical portion narrow. Aedeagus in ventral view (Fig. 141) with basal portion wide, rounded at sides, narrowed below lateral extensions of dorsal projection. Main stem long, tapered, very narrow, pointed. Ventral processes longer than stem, slender, straight, parallel, slightly . SPECIMENS EXAMINED (0)

DISTRIBUTION Mexico. 204 Osbornellus albolineus DeLong (Fig. 140)

Osbornellus albolineus DeLong. 1941b: 269; Metcalf 1965: 2179.

Type lo c a lity : Mexico.

DESCRIPTION Vertex angulate; median length greater than distance between eyes a t posterior margin. Dark brown with pale lin e on an terio r margin. Spot just behind apex and one on each side near base pale. Median lin e a t base marked with pale co lo r. E lytra pale, heavily marked with brown. Veins brown. Tips brown. Many cells with white and brown sp o ts. Usual brown spots along costa and commissural line. Aedeagus in la te r a l view (Fig. 140) with sh o rt d o rsal pro jection. Main stem slender, pointed at apex, curved dorsad. Ventral processes longer than stem, widely separated from it, curved' caudad then.dorsad, tapered and pointed. Length 5 mm. Description taken from DeLong 1941b. .

TYPE MATERIAL Holotype male - Balsas, Guerrero. December 11, 1929. Dr. Alphonse Dampf. (location unknown).

RECOGNITION CHARACTERS White line on anterior margin of vertex; shape of aedeagus. 203 portions short. Aedeagus in ventral view (Fig. 138) wide at base, narrowed slightly below short, rounded lateral extensions of dorsal projection. Main stem long, slender, tip pointed. Ventral processes long, slender, straight, narrowly separated, slightly longer than stem, apices pointed and slightly diver gent. In lateral view (Fig. 139), dorsal projection long, slen der, curved caudad, rounded at apex. Main stem long, slender, almost straight dorsad but curved slightly, widened at base, flattened on ventral margin near tip. Ventral processes slightly longer and narrower than stem, expanded slightly on apical thirds then tapered to sharp apices, parallel to stem and narrowly separated from i t . Female unknown. Length 5 mm.

TYPE MATERIAL Holotype male - Tag 1: San Diego Co., Calif. 8-3-f31. E, P. Van* Duzee; Tag 2j Van Duzee C ollectfn Acc. 4948. (ICCM).

RECOGNITION CHARACTERS

ly g o f e r , plate and style short; aedeagus uniquely shaped.

SPECIMENS EXAMINED (1) CALIFORNIA - San Diego Co. (Holotype: ICCM).

DISTRIBUTION California. 202 Osbornellus acricapitus n. sp. (Figs. 138, 139)

Type lo c a lity : C alifo rn ia.

DESCRIPTION Vertex sharply angulate; median length distinctly greater than distance between eyes at posterior margin. Pale ocelli, round apical dot connected to two pale oblong curved dashes along anterior margin (not reaching ocelli) and triangular pale spot behind apex, all bordered with brown. Very short, wide brown bar a t apex of coronal su tu re. White inverted "T-shaped mark s p lit by brown along coronal su tu re, cross-bar of "T,f heavily bordered with brown. Thin light lines along inner mar gins of eyes. Rest of vertex dark yellow. Pronotum mottled yellow-brown with faint white longitudinal median stripe and band of light and dark spots along anterior margin. .Scutellum with wide light brown stripe down center bordered laterally with brown, large orange spots in basal angles bordered with brown, four white spots along anterior margin, one white spot halfway along each lateral margin. Elytra transparent, yellowish, with many white spots and oblong brown patches. Veins brown, darker in apical halves of elytra. Tips brown. Brown spots at apices of claval suture, claval veins and costal veinlets. Male pygofer distinctly less than twice as long as greatest width; apical portion short, tapered, strongly rounded on ventral margin, rounded at tip. Plate and style usual shape; apical 201 RECOGNITION CHARACTERS Short, broad pygofer; ventral processes of aedeagus shorter than stem.

SPECIMENS EXAMINED (3) ARIZONA - Oak Creek Canyon Cl paratype: SEMC), Sabino Canyon (1: SEMC). MEXICO - Sonorai Yecora (1: CNCI),

DISTRIBUTION Arizona, Mexico. 200 Usual brown spots along costa and commissural line* Male pygofer much less than twice as long as greatest width; apical portion short, tapered, slightly rounded on sides, tip rounded. Plate usual shape, crenulate along middle of outer margin; apical portion short, narrow. Style usual shape. Aedea gus in ventral view (Fig. 136) almost square at base, narrowed below dorsal projection bearing wide, truncate, lateral exten sions. Main stem slender, tapered near apex to form sharp point. Ventral processes very narrow, straight, tapered to sharp apices, distinctly shorter than stem. In lateral view (Fig. 137), dorsal projection long, curved caudad, rounded tip turned dorsad. Main stem slender, parallel-sided, pointed dorso-caudad, apical third bent dorsad, tip rounded. Ventral processes very narrow, pointed, spine-like, parallel to stem, shorter than stem.

4 Posterior margin of female 7th sternite broadly rounded to middle. Length 5-5.5 mm. »

TYPE MATERIAL Holotype male - Atascasa Mt., Ariz., E. D. Ball. (EDBC). Allotype female - same as holotype. (EDBC). Paratypes - 1 male, 3 females same as holotype; 1 male, 1 female from Oak Creek Canyon, A riz.; 1 male from Long Valley, Ariz.; 1 male from Tucson, Ariz.; 1 male from Huachuca Mts., Ariz. (EDBC, SEMC, USNM). 199 Osbornellus tenuis Beamer (Figs. 136, 137)

Osbornellus tenuis Beamer, 1937: 97; DeLong and Caldwell 1937: 83; DeLong and Knull 1946: 32; Oman 1949: 122; Metcalf 1965: 2197.

Type locality: Arizona.

DESCRIPTION Vertex angulate; median length slightly greater than dis tance between eyes at posterior margin. Pale ocelli, pale apical spot and slender curved pale dash to each side of apical spot (not quite reaching ocellus) bordered above with dark brown, below with dark brown only on median fourth and below ocelli. Brown spot behind each ocellus slightly expanded obliquely back wards and inwards. Elongate-triangular white spot above apex. Heavy transverse brown bar at apex of coronal suture. White in verted* ,,T,l-shaped mark s p lit by brown along coronal suture, bor dered with brown. White lines along inner margins of eyes. Rest of vertex dark yellow. Pronotum mottled lig h t brown with band of light and dark spots along anterior margin. Scutellum with wide lig h t brown band down center margined la te ra lly with brown, brown spots in basal angles ringed with dark brown, four white spots along anterior margin, one white spot halfway along each lateral margin. Elytra transparent, yellowish, heavily marked with white. Several oblong brown patches. Veins brown. Tips brown. MEXICO - Morelos: Cuernavaca (5: USNM).

DISTRIBUTION Arizona, Texas, Mexico. 197 Male pygofer slightly less than twice as long as greatest width; apical portion short, straight on dorsal margin, rounded on ventral margin, point rounded. Plate and style usual shape. Aedeagus in v en tra l view (Fig. 134) with basal portion somewhat elongate-rectangular, narrowed below slender, oblong dorsal pro jection. Ventral processes slender, appressed, tips crossed. In lateral view (Fig. 135), dorsal projection long, curved caudad. Main stem long, slender, bent dorsad above base then nearly straight, blunt-tipped. Ventral processes about same width as stem, expanded slightly below apices, close to stem, parallel to stem except at apices. Posterior margin of female 7th sternite strongly, angularly produced, semblance of notch at middle. Length 5.5 mm.

TYPE MATERIAL * a Holotype male - Santa Rita Mts., Ariz., July 5, 1933, E. D. B all. ‘ (EDBC). Allotype female - same except June 30, 1930. (EDBC). Paratype - 1 female same as allotype. (EDBC).

RECOGNITION CHARACTERS Shape of aedeagus distinctive.

SPECIMENS EXAMINED (11) ARIZONA - Chiricahua Mts. ( li DMDC) (2: HOCI) (2: SEMC). TEXAS - Davis Mts. (1: HOCI). 196 Osbornellus bifasciatus Beamer (Figs. 134, 135)

Osbornellus bifasciatus Beamer, 1937: 97; DeLong and Caldwell 1937: 83; DeLong and Knull 1946: 3; Ctaan 1949: 121; Metcalf 1965: 2183.

type locality: Arizona.

DESCRIPTION Vertex broadly angulate; median length about equal to dis tance between eyes a t p o sterio r margin. Broad brown band along anterior margin interrupted by pale ocelli, pale apical dot, short fat curved pale dash to each side of apical dot (not reaching ocelli), and elongate-triangular pale dot behind. Short, heavy brown bar at apex of coronal suture. White inverted MTn-shaped mark s p lit by brown along coronal suture and margined with brown. Thin white lines along inner margins of eyes. Rest of vertex dark yellow. Pronotum mottled lig h t brown with row of light and dark spots along anterior margin. Scutellum with light brown band down center, orange spots in basal angles, four white spots along anterior margin (two middle ones each with small brown dot just inside), one white spot halfway along each lateral margin bordered with brown. Elytra transparent, yellowish, with many white patches especially across bases, giving 2-banded ap pearance; few oblong brown patches. Veins brown. Usual brown spots along costa and commissural line. 195 Paratypes - 2 males same as holotype, 1 male same except E. S. Tucker, 1 male from Atherton, Mo. (SEMC).

RECOGNITION CHARACTERS Pointed vertex; tawny color; aedeagus similar to consors but main stem much narrower in lateral view, dentation different.

SPECIMENS EXAMINED (5) OHIO - Franklin C o.: Columbus (2: HOCI). PENNSYLVANIA - Pt. Royal (1: DMDC). TEXAS - G illespie Co. (2: DMDC).

DISTRIBUTION Eastern U. S. from Texas to Pennsylvania. 194 Male pygofer about twice as long as greatest widthj apical portion slender, tapered slightly, tip truncate. Plate with basal portion large, apical portion very thin and rather short. Style usual shape, ap ica l portion long and slender. Aedeagus in ventral view (Fig. 132) wide at base, slightly rounded out then tapered to just below oval dorsal projection. Main stem tapered sharply to very thin, pointed apical half. Ventral processes with basal halves fairly wide and straight, apical halves slen der, tapered, pointed, with heavy dentation on inner margins. In lateral view (Fig. .133), dorsal projection short, tapered, curved slightly caudad. Main stem wide at base, tapered to long, slender apical portion curved slightly caudad then slightly dor sad near rounded tip. Ventral processes widely separated from stem, narrow above base then sharply widened before tapering to apices, curved dorsad on basal halves and caudad on apical halves, with long, variable dentation on ventral margins from widest points to tips. * Posterior margin of female 7th sternite rounded at sides, straight across middle with slight notch at center. Length 5-5.25 nun.

TYPE MATERIAL Holotype male - Douglas County, Kan. Light Trap. Paul B. Lawson, (SEMC). Allotype female - same as holotype. (SEMC). 193 Osbornellus corniger Beamer (Figs. 132, 133)

Osbornellus corniqer Beamer, 1937: 102; DeLong and Caldwell 1937: 83; DeLong and Knull 1946: 32; Osborn and Knull 1947: 331; Oman 1949: 122; Metcalf 1965: 2188.

type locality: Kansas.

DESCRIPTION Vertex narrow, angulate; median length distinctly greater than distance between eyes at posterior margin. General tawny color. Pale dot at apex with pale curved dash on each side to ocellus and elongate-triangular pale spot behind; these markings and o c e lli bordered with brown. White inverted "T’^shaped mark s p lit by browrv along coronal suture, margined with brown (brown heaviest along anterior margins). Light lines along inner mar gins of eyes. Rest of vertex tawny-yellow. Pronotum mottled yellow-brown with band of light and dark spots along anterior margin. Scutellum with lig h t brown s trip e down center and yellowish-brown spots in basal angles bordered with brown, four small white dots along anterior margin, one larger white dot halfway along each lateral margin. Elytra transparent, yellow^ ish , with many white spots and few oblong brown patches. Veins brown, darker near dark brown tip s of e ly tra . Usual brown spots along costa and commissural line. 192 SPECIMENS EXAMINED (3) ARIZONA - Granite Dell (Holotype: SEMC)* Oak Cr. Can. (2: SEMC).

DISTRIBUTION Arizona. 191 Male pygofer slightly less than twice as long as greatest width; apical portion narrow, rounded at tip. Plate with large basal portion, short, narrow apical portion. Style usual shape. Aedeagus in ventral view (Fig. 130) with basal portion long, slender, tapered slightly below truncate lateral extensions of dorsal projection. Main stem long and very narrow. Ventral pro cesses extremely narrow, appressed basally, apical halves slightly divergent. In lateral view (Fig. 131), dorsal projec tion arising above narrow basal portion, long, slender, curved caudad then slightly dorsad. Main stem very wide on basal half, then tapered sharply to pointed tip, curved dorsad then caudad with tip hooked dorsad. Ventral processes arising at base of stem, extremely narrow, distinctly shorter than stem. Posterior margin of female 7th sternite with sides broadly rounded to middle. (Description of female taken from Beamer 1937). Length 5 mm. type material Holotype male - Granite Dell, Ar. 7-30-33. R. H. Beamer. (SEMC), Allotype female - same as holotype. (SEMC). Paratype - 1 male from Granite Dell, Ar. (EDBC).

RECOGNITION CHARACTERS Angulate vertex; tawny color; distinctive shape of aedeagus, especially in lateral view. 190 Osbornellus spicatus Beamer (Figs. 130, 131)

Osbornellus spicatus Beamer, 1937: 103; DeLong and Caldwell 1937: 83; DeLong and Knull 1946: 32; Oman 1949: 122; Metcalf 1965: 2196.

Type lo c a lity : Arizona.

DESCRIPTION Vertex sharply angulate; median length distinctly greater than distance between eyes at posterior margin. General tawny color. Pale apical dot, wide pale dash to each side narrowed at tip and not quite reaching ocelli, white elongate-triangular spot behind apex, ocelli pale, all surrounded by brown. Short, thick brown bar at apex of coronal suture. White inverted nTIT- shaped mark margined with brown. Thin light lines along inner margins of eyes. Rest of vertex yellow. Pronotum light brown with light and dark mottled band along anterior .margin. Scu- tellum with wide light brown band down center margined laterally with brown; dark yellow spots in basal angles margined with brown, four white spots along anterior margin, one white spot halfway along each lateral margin. Elytra transparent, yellowish with large patches of white and few brown spots. Veins yellow in basal portions of elytra, brown in apical portions. Usual brown spots along costa and commissural line. Tips brown. SPECIMENS EXAMINED (4) CALIFORNIA - Los Anoeles Co.: Tanbark F la t (1: CISC) oountv unspecified: Ahwanee (1: CISC), Dulzura (Holotype: SEMC), Sequoia Nat. Pk. (1: SEMC).

DISTRIBUTION California. 188 Veins brown. Usual brown spots along co sta and commissural lin e . Male pygofer slightly less than twice as long as greatest width; apical portion short, truncate. Plate broad at base; api cal portion short and very narrow. Apical portion of style nar rowed, curved laterad. Aedeagus in ventral vifew (Fig. 128) with base wide, rounded at sides. Lateral extensions of dorsal pro jection sharply tapered at tips. Main stem long, slender, ta pered to sharp apex. Ventral processes long, very slender, crossed near base, slightly shorter than stem. In lateral view (Fig. 129), dorsal projection long, pointed dorsad, tip blunt. Main stem long and slender, parallel-sided, bent sharply dorsad just above base then curved caudad on apical half, tip concave. Ventral processes long, extremely narrow, arising near base, parallel to and slightly shorter than stem. Female unknown. Length 5 mm.

TYPE MATERIAL Holotype male - Dulzura, Calif. 8-9-35. R. H. Beamer. (SEMC).

RECOGNITION CHARACTERS Markings on vertex reduced; main stem and ventral processes of aedeagus extremely long and narrow. 187 Osbornellus decorus Beamer (Figs. 128, 129)

Osbornellus deoorus Beamer, 1937: 98; DeLong and Caldwell 1937: 83; DeLong and Knull 1946: 32; Oman 1949: 122; Metcalf 1965: 2188.

Type lo c a lity : C alifo rn ia.

DESCRIPTION Vertex narrow, angulate; median length about one-third greater than distance between eyes at posterior margin. Vertex brown to back of ocelli with round white dot at apex, short thin oblique line to each side of apical spot, elongate diamond-shaped white spot behind apex and yellow-brown spot to inside of each ocellus. Wide dark brown band between anterior portions of eyes, narrowed at ends by white lines along inner margins of eyes. Small white spot to each side of coronal suture halfway to eye. Posterior part of vertex with elongate white spot nearer eye on each side, all surrounded with brown. Dark brown line along posterior margin, white spot in each corner. Pronotum brown, heavily marked with small white dots, with band of white and dark spots along anterior margin. Scutellum with median yellowish . band margined with brown, brown spots in basal angles margined with brown, four white spots along anterior margin and one white spot halfway along each lateral margin. Elytra transparent, yellow ish, with many white spots and elongate brown patches. (USNM).

RECOGNITION CHARACTERS Largej tawny color; aedeagus distinctive in shape, denta tio n .

SPECIMENS EXAMINED (22) ALABAMA - H aleyville (2: DMDC). MARYLAND - Plummer1s Id . (2: SEMC). OHIO - F airfield Co. (4: HOCI). Hocking Co. (9: HOCI). PENNSYLVANIA - Lehigh Gap (1 paratype: USNM). TENNESSEE - Allona (1: DMDC). VERMONT - S. Newfane <1: MCZC). WEST VIRGINIA - Duroin (1: DMDC). CANADA - Quebec: Hudson Hgts, (1: FSCA).

* DISTRIBUTION Eastern U. S. and Canada. 185 brown. Usual brown spots along costa and commissural lin e . Male pygofer less than twice as long as greatest width; apical portion short, tapered slightly to broadly rounded tip. Plate with wide basal portion, very narrow apical portion. Style usual shape. Aedeagus in ventral view (Fig. 126) wide at base. Dorsal projection with rounded lateral extensions. Main stem extremely narrow, pointed. Ventral processes wide, slightly separated and slightly tapered on basal three-fifths, sharply tapered outward on apical two-fifths; inner margins dentate on apical halves. In lateral view (Fig. 127), dorsal projection long, expanded apically, truncate. Main stem slender, tapered slightly, directed dorsad and s'.ightly caudad, tip blunt. Ven tral processes widely separated from stem, slender near base, expanded on middle halves, tapered to apices; ventral margins dentate on apical halves. Posterior margin of female 7th sternite strongly produced, straight across middle, slightly rounded at sides. * Length 6-6.5 mm.

TYPE MATERIAL Holotype male - New Haven, Conn. August 20, 1934. R. H. Beamer. (SEMC). Allotype female - same as holotype. (SEMC). Paratypes - 1 female same as holotype (SEMC); 2 males from Iuka, Miss. (SEMC); 2 females from Vienna, Va. (USNM); 1 female from Lehigh Gap, Pa. (USNM); 1 female from Relay Sta., Md. 184 Osbornellus alatus Beamer (Figs. 126, 127)

Osbornellus alatu s Beamer, 1937: 105j DeLong and Caldwell 1937: 83; Britton 1938: 24; DeLong and Knull 1946: 31; Osborn and Knull 1947: 331; Oman 1949: 121; Metcalf 1965: 2178.

Type lo c a lity : Connecticut.

DESCRIPTION Vertex broadly angulate; median length slightly less than distance between eyes at posterior margin. General tawny color. Markings somewhat indistinct. Wide brown band along anterior margin (sinuate on posterior edge) enclosing pale ocelli, pale apical dot and pale oblong pointed dashes to sides of apical dot. Elongate white dot behind apex. White inverted nTn**shaped mark reduced to long narrow stripe on each side of coronal suture and pale spots halfway between posterior portions of coronal suture and eyes, all margined with brown. Thin pale lines along inner margins of eyes. Rest of vertex yellowish. Pronotum mottled dark yellow with band of light and dark spots along anterior mar gin just behind narrow tawny stripe along middle of anterior mar gin. Scutellum with broad light yellow stripe down center, orange spots in basal angles, four small white spots along anter ior margin, one white spot halfway along each lateral margin. Elytra transparent, yellowish, with several white spots and few faded brown patches. Veins lig h t brown. Tips margined with 183 (Fig. 125), basal portion long, slender, straight, pointed dor sad. Main stem arising at dorsal end, slender, pointed caudad then curved sharply dorsad, tip pointed. Ventral processes ari sing at base, strongly curved dorsad, wide on basal two-thirds, narrow on apical thirds, sharply pointed apices not quite reach ing tips of stem. Posterior margin of female 7th sternite strongly, roundedly produced, with slight notch at center, (female here described). Length 6 mm.

TYPE MATERIAL Holotype male - Santa J ’nez. (Ecuad.) R. Haensch S. (MHHN). Allotype female - San Isidro Colombia. Cnd. 27-V-44. F. R. Fosberg. (USNM). (allotype here designated).

RECOGNITION CHARACTERS Unique shape of aedeagus most distinctive.

SPECIMENS EXAMINED (4) COLOMBIA - Choachi (2: USNM), San Isid ro (Allotype: USNM). ECUADOR - Santa J'nez (Holotype: MHHN).

DISTRIBUTION Ecuador, Colombia. 182 Osbornellus ecuadoricus Linnavuori (Figs. 124, 125)

Osbornellus eouadorious Linnavuori. 1959: 213.

Type lo c a lity : Ecuador.

DESCRIPTION Vertex broadly rounded; median length distinctly less than distance between eyes at posterior margin. Pale dot at apex, pale wavy dashes of irregular width connecting it to ocelli bor dered above and below with dark brown lin e . T riangular white spot behind apex. Dark spots behind ocelli, white spots behind those. Large orange area to each side of anterior portion of coronal suture. Large white inverted "TM-shaped mark indistinct ly margined with brown. White spots in posterior corners of vertex. Pronotum mottled brown with band of lig h t and dark spots along anterior margin, Scutellum pale with large dark spots in basal angles. Elytra transparent, yellowish, with many white spots and some elongate brown patches. Usual brown spots along costa and commissural line. Tips brown. Male pygofer about 1.5 times as long as greatest width. Plate and style usual shape; tip of style slightly concave. Ae deagus in ventral view (Fig. 124) large, very wide, almost rec tangular. Ventral processes arising at base, appressed, expanded on basal halves then narrow on apical halves, tips slightly di vergent, not quite reaching tip of main stem. In lateral view 181 TYPE MATERIAL Holotype male - Cerro Punta, Panama, March 4, 1940. T. T. Howard, (location unknown). Allotype female - same as holotype. (location unknown).

RECOGNITION CHARACTERS Aedeagus d is tin c tiv e .

SPECIMENS EXAMINED (0)

DISTRIBUTION Panama. 180 Osbornellus acuminatus DeLong

Osbornellus acuminatus DeLong. 1942: 93; Linnavuori 1959: 211; Metcalf 1965: 2178.

Type lo c a lity : Panama.

DESCRIPTION Vertex bluntly angulate; median length about equal to dis tance between eyes at posterior margin. Small pale apical spot and small spot to each side enclosed in broad black band along anterior margin. Small pale spot just behind apex. Heavy dark transverse bar at apex of coronal suture. Orange spots between anterior portions of coronal suture and eyes. White inverted '^"-shaped mark margined with brown. Pronotum dark brown with mottled band along anterior margin. Scutellum pale, with dark spots in basal angles. Elytra transparent, pale, tinged with brown. Some cells with brown spots. Usual brown spots along costa and commissural lin e . Male plates long and slender. Aedeagus in la te r a l view en larged above narrow base. Dorsal projection thumblike. Main stem broad with bluntly rounded apex. Ventral processes slender, pointed, slightly longer than stem. Posterior margin of female 7th sternite strongly, roundedly produced. Length 6 mm. Description taken from DeLong 1942, DISTRIBUTION Panama. 178 rounded. Plate with long, tapering apical portion crenulate on lateral margin. Style usual shape. Aedeagus in ventral view (Fig. 122) with basal portion wide and rounded laterally. Dorsal projection with lateral expansions. Main stem long and extremely narrow. Appressed ventral processes just as long and just as narrow. In lateral view (Fig. 123), dorsal projection long, pointed dorsad, slightly tapered at tip. Main stem wide, parallel-sided, curved sharply dorsad just beyond dorsal projec tion, tip rounded. Ventral processes long and very narrow, pointed, close to stem, about as long as stem. Posterior margin of female 7th sternite strongly produced with broad, truncate tip. Length 6-6.5 mm.

TYPE MATERIAL Holotype male - Cerro Punta, Pan. 12-23-39. T. T. Howard, (location unknown). Allotype female - same as holotype. (location unknown). Paratypes - males and females same as holotype. (1 female DMDC; location of others unknown).

RECOGNITION CHARACTERS Large; broad main stem and spinelike ventral processes of aedeagus distinctive.

SPECIMENS EXAMINED (1) PANAMA - Cerro Punta (1 paratype: DMDC). 177 Osbornellus alaudus DeLong (Figs. 122, 123)

Osbornellus alaudus DeLoncr. 1942: 92; Linnavuori 1959: 211; Metcalf 1965: 2179.

Type lo c a lity : Panama.

DESCRIPTION Vertex very broadly angulate; median length slightly less than distance between eyes at posterior margin. Wide dark band along anterior margin including ocelli, interrupted by small pale spot at apex connected to elongate pale spot to each side and triangular spot behind. Wide brown line across median half of vertex at apex of coronal suture. Orange area to each side of anterior portion of coronal suture. White inverted "T^-shaped mark s p lit by brown along coronal su ture, margined with brown. Thin pale stripes along inner margins of eyes. Pronotum mottled brown with irre g u la rly marked band along a n terio r margin. Scu- tellum with wide pale median stripe margined laterally with brown; dark spots in basal angles, four small white spots along anterior margin, one larger white spot halfway along each lateral margin. Elytra transparent, yellowish. Veins brown. Several white spots and elongate brown patches. Usual brown spots along costa and commissural line. Male pygofer 1.5 times as long as greatest width; apical portion tapered slightly to almost squared tip, corners slightly 1 7 6 projection thumblike. Main stem gradually tapered, curved dorsally then anteriorly to form narrow, bluntly pointed apex. (Description of genitalia taken from DeLong 1942). Posterior margin of female 7th sternite strongly, roundedly produced. Length 6 mm.

TYPE MATERIAL Holotype male - Tag 1: Mont Grande, Chiapas. 111-23-31. M. F. 2080; Tag 2: J. Parra Coll. (DMDC). (genitalia missing). Allotype female - Chiltepec, Oaxaca, March, 1932. (location unknown). Paratypes - females from Chiltepec and San Cristobal, Oaxaca, (location unknown).

RECOGNITION CHARACTERS Spine of pygofer; distinctive aedeagus.

SPECIMENS EXAMINED (2) MEXICO - Chiapas: Mont Grande (Holotype: DMDC); Oaxaca: Jalapa de Diaz (1: DMDC).

DISTRIBUTION Mexico. 175 Osbornellus trimaculatus DeLong

Osbornellus trimaculatus DeLong, 1942: 94; Metcalf 1965: 2197.

Type lo c a lity : Mexico.

DESCRIPTION Vertex broad, slightly angulate; median length less than distance between eyes at posterior margin. Pale round apical dot with short, fat dash to each side, pale triangular spot be hind, all surrounded with brown. Wide slightly curved dark brown line at apex of coronal suture. Dark brown spot just behind each ocellus next to inner margin of eye with short whitish dash be hind and orange spot on mesal side. White inverted "T^-shaped mark s p lit by brown along coronal su tu re, margined with brown. Orange area to each side of anterior portion of coronal suture. Small white spot in each posterior corner of vertex. Pronotum mottled yellow-brown with light and dark spots behind eys. Scu- tellum* with yellowish band down center margined laterally with brown; large brown spots in basal angles, two small white dots on anterior margin near center, lateral margins white except for small dark spot about one-third distance from base. Elytra transparent, yellowish, with few white spots and some elongate brown patches. Veins brown. Usual brown spots along costa and commissural line. Ventral apical portion of pygofer with long, pointed spine directed caudad. Aedeagus enlarged above narrow base. Dorsal DISTRIBUTION B razil. 173 Osbornellus lamellaris Linnavuori (Fig. 121)

Osbornellus lamellaris Linnavuori. 1959: 213.

Type lo c a lity : B razil.

DESCRIPTION Resembling infuscatus but larger; light reddish-brown with, scanty dark markings, vertex marked like infuscatus. Male pygofer broad, roundedly truncate at tip with faint in cision at middle. Plate and style usual shape. Main stem of ae deagus (Fig. 121) long, very broad, larellarly flattened; dorsal surface with few small teeth; ventral processes very short and slender, pointed. Posterior margin of female 7th sternite roundedly produced. Length 6 mm. . Description taken from Linnavuori 1959.

TYPE MATERIAL Holotype male - Brazil, Nova Teutonia. 12.14-9.V.1938, Plaumann. (RLCI). Allotype female - same as holotype. (UHCI).

RECOGNITION CHARACTERS Distinctive shape of aedeagus.

SPECIMENS EXAMINED (0) DISTRIBUTION Panama. 171 short, broad, slightly convex on dorsal margin. Plate with basal portion wide, longer than narrow apical portion. Style usual shape; ap ical portion long, t i p tru n cate. Aedeagus in v en tra l view (Fig. 119) wide at base, sides sloped out then in, tapered gradually to long, narrow, recurved apical portion bifid at tip; no ventral processes. In lateral view (Fig. 120), dorsal projec tion long, directed dorso-basad, tip turned slightly dorsad and pointed. Main stem very long, gradually tapered to pointed apex; very strongly, evenly curved dorsad then basad. Posterior margin of female 7th sternite very strongly pro duced, tapered only slightly to very, broad, blunt tip. Length 6.5 mm.

TYPE MATERIAL Holotype male - Cerro Punta, Pan. 12-23-39. T. T. Howard. (DMDC). Allotype female - same as holotype. (DMDC). Paratype - 1 female same as holotype. (DMDC).

RECOGNITION CHARACTERS Large; orange markings and wide dark marginal band on ver tex unusual; aedeagus unusual in lacking ventral processes, unique in being so strongly recurved.

SPECIMENS EXAMINED (7) PANAMA - Cerro Punta (5 including holotype, allotype and 1 * paratype: DMDC), Volcan (2: USNM). 170 Osbornellus llbratus DeLong (Figs. 119, 120)

Osbornellus libratus DeLong. 1941b: 267; Linnavuori 1959: 211; Metcalf 1965: 2190.

Type lo c a lity : Panama.

DESCRIPTION • Vertex broadly angulate; median length about equal to dis tance between eyes at posterior margin. Broad, very dark band along anterior margin, interrupted by pale ocelli, round yellow ish dot at apex, and short, narrow, curved orange dash to each side of apical dot. Diamond-shaped yellowish spot behind mar g in al band a t center bordered p o sterio rly by wide curved brown line. Large orange spot to each side of anterior portion of coronal suture. Usual white inverted ,fTu-shaped mark on poster ior half of vertex bordered with thin brown lines; white along coronal suture not reaching apex. Pronotum mottled brown; an terior margin behind eyes white with dark spots. Scutellum light brown; dark spots in baszl angles, white spot halfway along each lateral margin bordered mesally by brown line. Elytra trans parent, yellowish, with white spots and elongate brown patches. Veins brown. Heavy brown spots along costa and commissural lin e . Tips brown. Male pygofer about 1.5 times as long as greatest width, al most hemispherical along ventral margin and tip; apical portion 169 RECOGNITION CHARACTERS Appearance somewhat similar to excavatus but easily distin guishable; aedeagus obviously distinctive.

SPECIMENS EXAMINED (15) MEXICO - Chiapas; Finca Vergel (3 including allotype: DMDC); Guerrero: Iguala (1: DMDC); Oaxaca: Eloxochitlan (Holotype, 5 paratypes: DMDC), Taltepec (1: DMDC); Puebla: Necaxa (3: DMDC); s ta te unspecified (1: DMDC).

DISTRIBUTION Mexico, Male pygofer (Fig. 117) long and narrow, more than twice as long as greatest width; apical portion long and narrow, tapered to rounded point. Plate (Fig. 118) wide at base; wide apical portion constricted at midlength, plumose near pointed tip. Style usual shape; ap ical portion somewhat sto u t, t i p tru n cate. Aedeagus in v en tral view (Fig. 115) wide a t base, tapered sharply at midlength behind ventral processes to form slender main stem, slightly expanded just below truncate and slightly bifid tip. Ventral processes arising near base, rather wide, divergent, narrowed tips turned caudad, each with long, narrow pointed tooth about halfway along inner margin directed caudad. In lateral view (Fig. 116), dorsal projection narrow, pointed, curved caudad just beyond main stem. Main stem appearing to arise, halfway along dorsal projection, wide, parallel-sided, curved dorsad, tip rounded. Ventral processes long, slender, curved slightly dorsad then caudad, tooth appearing on ventral side. Posterior margin of female 7th sternite roundedly produced, somewhat sin u ate. Length 6 mm.

TYPE MATERIAL Holotype male - Eloxochitlan, Oax. 6-27-32. M. F. 2638. (DMDC). (genitalia missing). Allotype female - Finca Vergel, Chiapas. V-23-35. M. F. 4273. (DMDC). Paratypes - 5 males same as holotype. (DMDC). 167 Osbornellus furcillatus DeLong (Figs. 115-118)

Osbornellus furcillatus DeLong. 1941b: 264; Metcalf 1965: 2189.

Type lo c a lity : Mexico.

DESCRIPTION Vertex broadly angulate; median length slightly less than distance between eyes at posterior margin. Pale band along an terior margin, slightly curved to each side of apex, not quite reaching o c e lli, bordered above and below by dark brown lin e . O celli ringed with dark brown. Narrow, almost stra ig h t pale band across vertex between, but not reaching, ocelli, with median tri angular anterior projection touching pale marginal line. Short, thick transverse brown line at apex of coronal suture. White inverted ,,T,,-shaped mark faint along coronal suture, bordered with brown. Thin pale lines along inner margins of eye. Rest of vertex*yellowish-orange. Pronotum yellow-brown; band of light and dark spots along anterior margin with thin, elongate orangish spot at middle. Scutellum with broad, yellowish band down cen te r , bordered la te ra lly by th in brown lin e s; larg e brown spots in basal angles, four small white spots along anterior margin, one larger white spot halfway along each lateral margin. Elytra transparent, pale yellow. Veins brown. Several white patches and few brown spots in c e lls . Usual brown spots along costa and commissural line. 166 portion tapered gradually, not very narrow, plumose on apical h a lf. S tyle usual shape. Aedeagus in v en tral view (Fig. 112) narrow -at base, expanded gradually then narrowed sharply to slender, truncate main stem. Ventral processes slender, widely divergent, rugose on apical halves. In lateral view (Fig. 113), dorsal projection wide at base, slender apical half bent caudad. Main stem wide, curved dorsad, tip truncate with dorsal corner expanded. Ventral processes slender, narrowly separated from stem, curved dorsad, tapered to sharp apices, rugose on apical halves. Female unknown. Length 6 mm.

TYPE MATERIAL Holotype male - M. F. 4693. Finca Victoria, S. L. P. VI- 28-'35. (DMDC). (genitalia missing). Paratype - 1 male same as holotype. (DMDC).

» RECOGNITION CHARACTERS Short, fat pygofer; aedeagus distinctive.

SPECIMENS EXAMINED (2) MEXICO - San Luis Potosi: Finca Victoria (Holotype, allo type: DMDC).

DISTRIBUTION Mexico. 165 Osbornellus excavatus DeLong and Martinson (Figs. 112-114)

Osbornellus excavatus DeLong and Martinson, 1976b: 586.

Type lo c a lity : Mexico.

DESCRIPTION Vertex broadly pointed; median length slightly less than distance between eyes at posterior margin. Narrow, orangish band along anterior margin between, but not reaching, ocelli; band slightly curved, slightly expanded at middle. Wider pale band straight across vertex between, but not reaching, ocelli, with short posterior projection at each end and long triangular anterior projection at middle just reaching band along anterior margin. These markings and ocelli surrounded with dark brown. Dark brown lin e across e n tire vertex a t apex of coronal su ture, bordered posteriorly by orange-red band. Posterior part of ver tex brown. Pconotum dark yellow-brown, with band of light and dark spots along anterior margin. Scutellum yellow-brown with large brown spots in basal angles, small white spot halfway along each lateral margin. Elytra transparent, pale yellow. Veins brown. Few faint white spots and oblong brown patches. Usual brown spots along costa and commissural line* Male pygofer (Fig. 114) about 1.5 times as long as greatest width, rounded on ventral margin; apical portion short and fat, somewhat triangular, tip narrowly rounded. Plate with apical DISTRIBUTION Mexico. 163 sclerotization. Style usual shape. Aedeagus in ventral view (Fig. 110) rather squared at base. Main stem short, narrow, truncate. Ventral processes arising near base, fairly wide and straight for most of length, apical fourths bent mesad and ta pered to sharp points. In lateral view (Fig. Ill), main stem apparently arising near tip of dorsal projection, curved dorsad, almost semicircular. Ventral processes slender, almost straight, pointed caudad, tips tapered and turned very slightly dorsad. Posterior margin of female 7th sternite (Fig. 230) with long, very broad projection, tip rather truncate. Length 6.5-7 mm.

TYPE MATERIAL Holotype male - Guadalajara Rd.,Mex. X-116. 6-20-43. (DMDC). Allotype female - same as holotype. (DMDC). Paratype - 1 female, same as holotype. (DMDC).

RECOGNITION CHARACTERS Largest of known Osbornellus species; markings on vertex much reduced; sclerotization on plate; unique shape of aedeagus, especially in lateral view.

SPECIMENS EXAMINED (3) MEXICO - Jaliscoi Guadalajara Rd. (Holotype, allotype, 1 paratype: DMDC). 162 Osbornellus colossus n. sp. (Figs* 110, 1 1 1 , 230)

Type lo c a lity : Mexico.

DESCRIPTION Vertex very broadly angulate; median length much less than distance between eyes at posterior margin* Straight pale line along anterior margin between, but not reaching, ocelli, slightly expanded a t middle. Marginal lin e and o c e lli surrounded by dark brown. Small round pale dot at middle just behind marginal lines. Short, narrow, transverse brown line at apex of coronal suture. Whitish band along posterior margin, widest at ends, not reaching eyes. Rest of vertex yellowish-brown. Pronotum mottled brown, with band of dark spots and white streaks along anterior margin. Scutellum with wide, light brown stripe down center, margined with brown. Large brown spots in basal angles, white spots in corners, two white spots along anterior margin and one on each lateral margin. Elytra transparent, yellowish, with several white patches, especially along appendices, and elongate brown spots. Veins brown. Irregular brown spots at apices of claval suture, claval veins and costal veinlets. Females some what darker than males. Male pygofer slightly less than twice as long as greatest width; apical portion long, tapered, convex ventrally and concave dorsally, point rounded. Plate heavily sclerotized along middle third of lateral margin, apical portion widened slightly beyond 161 lateral view medium-sized, slightly curved dorsad, narrowed at tip. Ventral processes arising at base of stem, narrow at base, widened to apical one-thirds then narrowed to sharp apices, slightly longer than stem. (Description of male genitalia taken from Beamer 1937). Posterior margin of female 7th sternite rounded at sides, with short, very broad, rounded median projection, slightly indented at middle. Length 6-6.25 mm.

TYPE MATERIAL Holotype male - Giant Forest, Calif. July 28, 1929. R. H. Beamer. (SEMC). Allotype female - same as holotype. (SEMC). Paratype - 1 male from Yosemite, Calif. (EDBC).

RECOGNITION CHARACTERS Large; pygofer short; style very thin apically; aedeagus 4 distinctive.

SPECIMENS EXAMINED (3) CALIFORNIA - Mineral (2: HOCI), Sargent (1: HOCI).

DISTRIBUTION California. 160 Osbornellus curvatus Beamer

Osbornellus ourvatus Beamer, 1937: 101; DeLong and Caldwell 1937: 83; DeLong and Knull 1946: 32; Oman 1949: 122; Metcalf 1965: 2188.

Type lo c a lity : C alifornia.

DESCRIPTION Vertex sharply angulate; median length slightly greater than distance between eyes at posterior margin. Pale apical spot and pale, short, curved dashes along anterior margin (ending far from ocelli) bordered with brown. Ocelli bordered with brown. Triangular white spot behind apex. White inverted "T^-shaped mark bordered with brown (heaviest along an terio r margins), split by brown along coronal suture. Pale lines along inner margins of eyes. Rest of vertex yellowish-brown. Pronotum mottled yellow-brown, with band of light and dark spots along anterior margin. Scutellum white with wide, light brown band down center, large orange spots in basal angles, several small brown spots around these markings. Elytra transparent, light yellow with large white patches, especially near tips. Veins darkened, especially near tips. Usual brown spots along costa and commissural lin e . Male pygofer short and broad, scarcely wider than long; apical portion tapered. Apical portion of plate short and nar row. Style very narrow apically. Main stem of aedeagus in 159 having lateral extensions tilted caudad. Main stem very narrow, pointed. Ventral processes slender, slightly divergent, tips tapered and turned slightly inward. In lateral view (Fig. 109), dorsal projection fairly straight, narrowed at rounded tip. Main stem slender, curved dorsad, with round tip. Ventral processes slender, separated from stem, curved dorsad on basal half and caudad on apical half. Female unknown. Length 4.5 mm.

TYPE MATERIAL Holotype male - M. F. 1226. Navajoa, Son. III-25-,27. (DMDC). Paratype - 1 male from Taxco, Guerrero, (DMDC).

RECOGNITION CHARACTERS Closely resembling obscurus but overall lighter color; brown markings not so dark and heavy; ventral processes of aedeagus more slender, more divergent, more strongly curved.

SPECIMENS EXAMINED (5) ARIZONA - S ierra V ista, Huachuca Mts. (1: CNCI). MEXICO - Guerrero: Taxco (1 paratype: DMDC); Sinaloa: Mazatlan (2: CISC); Sonora: Navajoa (Holotype: DMDC).

DISTRIBUTION Arizona, Mexico. 158 Osbornellus trifrustrus DeLong and Martinson (Figs. 108, 109) t •

Osbornellus trifrustrus DeLong and Martinson, 1976b: 585.

Type lo c a lity : Mexico.

DESCRIPTION Vertex widely angulate; median length greater than dis tance between eyes at posterior margin. Anterior margin marked by pale apical spot with pale curved dashes reaching to ocelli, bordered above and below with brown. White triangular spot be hind apex. Brown dots behind ocelli. Usual white inverted "T"- shaped mark s p lit by brown along coronal suture, margined with brown (heaviest along anterior margins). Whitish lines along inner margins of eyes. Rest of vertex light yellow-brown. Pro- notum mottled lig h t brown, with band of white and dark spots along anterior margin. Scutellum white with wide light brown stripe*down center, large yellow-brown spots in basal angles. Elytra transparent, light brown, with many white spots and oblong brown patches. Veins brown. Usual brown spots along costa and commissural line. Male pygofer about 1.5 times as long as greatest width, rohnded on ventral marginj apical portion rather narrow, concave on dorsal margin, tip rounded. Plate usual shape, base rather wide. S tyle usual shape. Aedeagus in v en tral view (Fig. 108) with basal portion almost square, tapered to dorsal projection SPECIMENS EXAMINED (12) TEXAS - Davis Mts. (Holotype, allotype: DMDC). MEXICO - Sinaloa: Mazatlan (7: USNM); Sonora: Hermosillo (1: CISC); Veracruz: La Forestal (2: DMDC),

DISTRIBUTION Texas, Mexico. 156 long, tapered to rounded tip. Plate usual shape; apical portion narrow, crenulate near base on lateral margin. Style usual shape; tip slightly expanded. Aedeagus in ventral view (Fig. 106) with basal portion short, straight-sided, slightly widened apically. Broad, truncate, lateral expansions of dorsal projec tion visible. Main stem narrow, pointed. Ventral processes slender, divergent, tapered apically to form long, pointed apices. In lateral view (Fig. 107), dorsal projection long, curved caudad then slightly dorsad at tip. Main stem long, slender, parallel-sided, curved gently dorsad, tip rounded. Ventral processes slightly separated from stem, slender, curved dorsad, then slightly caudad on apical one-fourth and tapered to pointed tips. Posterior margin of female 7th sternite slightly, broadly, roundedly produced, with small rounded notch at center. Length 4.2-4.5 mm.

TYPE MATERIAL Holotype male - Davis Mts., Tex. VIII-22-36. J. N. Knull. (DMDC). Allotype female - same except VII-6-36. (DMDC),

RECOGNITION CHARACTERS Rather small; aedeagus distinctive, main stem and ventral processes quite slender. 155 Osbornellus filamentus DeLong and Beery (Figs. 106, 107)

Osbornellus filamentus DeLong and Beery, 1937: 266; DeLong and Caldwell 1937: 23; DeLong and Knull 1946: 32; Oman 1949: 122; Metcalf 1965: 2188.

Type lo c a lity : Texas.

DESCRIPTION Vertex narrow, angulate; median length about equal to dis tance between eyes at posterior margin. Apical spot, dashes to sides (not reaching ocelli), and triangular spot behind white, surrounded by brown. Brown spot behind each ocellus. White inverted nT,T-shaped mark s p lit by brown lin e along coronal su ture, bordered with brown line (heaviest on anterior margins, faint to sides). Pale lines along inner margins of eyes. Rest of vertex yellow-brown. Eronotura mottled lig h t brown and yellow- brown with band of irre g u la r white and dark spots along an terio r margin. Scutellum with wide light brown band down center and orange-brown spots in basal angles margined in brown; four white spots along anterior margin, one white spot halfway along each lateral margin. Elytra transparent, yellowish, with many white spots and elongate brown patches. Veins brown. Heavy brown spots along costa and commissural line, and at tips. Male pygofer less than twice as long as greatest width, rounded along ventral margin; apical portion about as wide as 154 TEXAS - Cameron Co. (1: DMDC); G illespie Co. (2: DMDC); Hidalgo Co. (15: DMDC); county unspecified: Davis Mts, (Is DMDC),

DISTRIBUTION Texas, Arizona, New Mexico, 153 Male pygofer s lig h tly more than 1.5 times as long as g reat est width, rounded along ventral margin; apical portion short, tip rounded. Plate usual shape, basal portion rather broad. S tyle usual shape, apical portion narrow ap ica lly . Aedeagus in ventral view (Fig. 104) with basal portion rounded to sides. Dorsal projection expanded laterally, ends pointed. Main stem tapered, narrow, with rounded tips. Ventral processes long, slender, slightly divergent, tapered near tips. In lateral view (Fig. 105), dorsal projection long, tapered, bent caudad then dorsad a t tip . Main stem somewhat wide, tapered only near round ed tip, curved gently dorsad. Ventral processes arising at base of stem, narrow at ends, expanded dorsally along middle third. Female unknown. Length 4.75 mm.

TYPE MATERIAL Holotype male - Cameron Co., Tex., August 3, 1928, R. H. Beamer; (SEMC). Paratype - 1 male from Rock Springs, Tex. (SEMC).

RECOGNITION CHARACTERS Vertex markings rather faded, indistinct; shape of main stem and ventral processes of aedeagus in lateral view distinctive.

SPECIMENS EXAMINED (21) ARIZONA - Miami (Is SEMC). NEW MEXICO - Eddv Co.: Carlsbad Cavern (1: UMMZ). 152 Osbornellus ater Beamer (Figs. 104, 105)

Osbornellus ater Beamer, 1937: 108; DeLong and Caldwell 1937: 83; DeLong and Knull 1946: 31; Oman 1949: 121; Metcalf 1965: 2179.

type locality: Texas.

DESCRIPTION Vertex broadly angulate; median length about equal to dis tance between eyes at posterior margin. Generally yellowish, markings suffused and rather indistinct. Pale dot at middle of anterior margin with curved pale dash to each side not quite reaching ocellus. Pale marginal markings and ocelli surrounded with brown* Small round pale dot at middle just behind apical dot. Usual whitish inverted ’^"-shaped mark along coronal suture and p o sterio r margin, surrounded by brown (brown heaviest along anterior margin). Pale thin lines along inner margins of eyes. Rest of vertex yellowish. Pronotum mottled yellow-brown with band of light and dark spots along anterior margin. Scutellum light brown down middle. Large orange spots in basal angles; white spots at basal tips and halfway along each lateral margin. Elytra transparent, yellowish, with many white spots and few brown patches. Usual brown spots along costa and commissural line. Tips brown. 151 RECOGNITION CHARACTERS Aedeagus distinctive in shape; main stem unusually broad in lateral view.

SPECIMENS EXAMINED (74) MEXICO - Guerrero: Chilpancingo (2: DMDC), Iguala (66 including holotype, allotype, 5 paratypes of salsus and holotype and 54 paratypes of aouleus: DMDC), Taxco (3: DMDC); Morelos: Cuernavaca-Acapulco Rd. (1: DMDC), Jiutepec (2 paratypes: DMDC).

DISTRIBUTION Mexico. 150 rounded. Basal portion of plate wide; apical portion narrow, not very long. Plate crenulate along middle of lateral margin. Style usual shape. Aedeagus in v en tral view (Fig. 102) slender, slightly rounded just above base. Ventral processes parallel-

4 sided and appressed for most of length, tips narrowed and slight ly divergent. In lateral view (Fig. 103), dorsal projection narrow, curved slightly caudad. Main stem very wide, curved very slightly dorsad, tapered only slightly to blunt tip, tip somewhat expanded dorsad. Ventral processes arising near base, narrow, close to but longer than stem, curved gently dorsad. Posterior margin of female 7th sternite rounded at sides with very short, rounded median tooth slightly indented at mid d le . Length 4.5 mm. The types of Osbornellus aculeus DeLong and Martinson have been examined by th e author and determined to be. synonymous with salsus DeLong. ■

TYPE MATERIAL Holotype male - Tag 1: Iguala, Gfro. IX-11-39; Tag 2: D. M. DeLong C ollr. (DMDC). Allotype female - same as holotype. (DMDC). Paratypes - 5 males same as holotype; 2 females from Jiute- pec, Morelos. (DMDC). 149 Osbornellus salsus DeLong (Figs. 102, 103)

Osbornellus salsus DeLoncr. 1942: 95; Metcalf 1965: 2195. Osbornellus aculeus DeLong and Martinson, 1976b: 585. (Type lo c a lity : Mexico). NEW SYNONYMY.

type locality: Mexico.

DESCRIPTION Vertex narrow, broadly angulate; median length slightly less than distance between eyes at posterior margin. Round api cal dot, slanted dash of irregular width to each side and diamond-shaped dot behind all white bordered with brown. Ocelli bordered with brown. Heavy brown transverse bar across median third of vertex at apex of coronal suture. White inverted ,,T,f— shaped mark a t back of vertex bordered with brown, s p lit by brown along coronal suture. Lines along inner margin of eyes white. Rest o'f vertex yellowish-brown. Pronotum mottled brown with band of pale and dark spots along anterior margin. Scutellum with wide yellowish pale stripe down center, bordered laterally with brown. Large spots in basal angles orange-brown bordered with brown. Elytra transparent, yellowish.. Veins brown. Many cells with brown and white patches. Usual brown spots along costa and commissural line. Male pygofer slightly more than 1.5 times as long as great est width; rounded on ventral margin; apical portion short, tip 148 end of main stem, apices narrow. In lateral view (Fig. 101), dorsal projection long, slender, curved caudad. Main stem long, tapered slightly, curved gently dorsad, tip expanded dorsad. Ventral processes narrow beyond base, pointed dorso-caudad, then apical two-fifths expanded, curved slightly caudad and sharp- tipped . Posterior margin of female 7th sternite roundedly produced to each side of wide, shallow median excavation. Length 4.5-5 mm.

TYPE MATERIAL Holotype male - Tag 1: Adelanto, Cal. VII-30-40; Tag 2: D. J . & J . N. Knull, C o llrs . (DMDC). Allotype female - Tag 1: Pine Valley, Cal. VII-27-40;

Tag 2: D. J . & J. N. Knull, Collrs. (DMDC).

RECOGNITION CHARACTERS Very narrow, sharply pointed vertex; ventral processes of * aedeagus unusually shaped.

SPECIMENS EXAMINED (2) CALIFORNIA - Adelanto (Holotype: DMDC), Pine Valley (Allo type: DMDC).

DISTRIBUTION California. 147 Osbornellus capitatus DeLong and Knull (Figs. 100, 101)

Osbornellus capitatus DeLong and Knull, 1941: 177, 1946: 32; Ctaan 1949: 122; Metcalf 1965: 2185.

type locality: California.

DESCRIPTION Vertex narrow, sharply angulate; median length distinctly greater than distance between eyes at posterior margin. General yellowish color. Apical spot, short, oval, pointed dash to each side, triangular spot behind apex, and ocelli all pale, surround ed with brown. Whitish inverted !,TM-shaped mark along coronal suture and posterior margin bordered with brown. Pale lines along inner margins of eyes. Rest of vertex brownish-yellow. Pronotum mottled yellow-brown; band of irre g u la r lig h t and dark spot along anterior margin. Scutellum pale, yellowish, with dark yellow*spots in basal angles; four white spots along anterior margin. Elytra transparent, whitish-yellow. Usual brown spots along costa and commissural line. Some veins and cells near tips marked with brown. Male pygofer slightly less than twice as long as greatest width, rounded along ventral margin; apical portion short, tip broadly rounded. Plate and s ty le usual shape. Aedeagus in ven tral view (Fig. 100) rounded just above base. Ventral processes long, slender, appressed, swollen slightly above base and near DISTRIBUTION Argentina. 145 with ends tipped basad. Ventral processes much narrower than base and dorsal projection, arising near base, long, slender, appressed except just at tips, width varying slightly, tapered at tips. In lateral view (Fig. 99), dorsal projection sturdy, curved caudad then dorsad. Main stem long, slender, tapering, curved dorsad. Ventral processes wide, parallel to stem along dorsal margins, ventral margins bent dorsad at two-thirds length to form long, narrow, pointed apices. Posterior margin of female 7th sternite (Fig. 229) strongly, roundedly produced, especially at middlej tip indented slightly. Length 4.5 mm.

TYPE MATERIAL Holotype male - Tag 1: ARGENTINA Tucuman; Tag 2: I - I I I - 1941. K. J . Hayward. 41-16985. (USNM). Allotype female - same as holotype. (USNM). Paratypes - 2 males, 1 female same as holotype (USNM); 1 male from P. Salta Salta, Argentina. (DMDC).

RECOGNITION CHARACTERS Short pygofer, shape of aedeagus (especially in lateral view) distinctive.

SPECIMENS EXAMINED (6) ARGENTINA - S alta (1 paratype: DMDC), Tucuman (Holotype, allotype, 3 paratypes: USNM). 144 Osbornellus flavibrunneus n. sp. (Figs. 98, 99, 229)

Type lo c a lity : Argentina.

DESCRIPTION Vertex broadly, roundedly angulate; median length about equal to distance between eyes at posterior margin. Small, round apical dot with short, fat, curved dash to each side (not reach ing ocelli) and wide, diamond-shaped spot behind apex a ll pale, connected. Ocelli and marks along margin thinly bordered poster iorly with brown. Large orangish-yellow spot just inside and behind each ocellus. Heavy brown bar at apex of coronal suture. White inverted ,lTI,-shaped mark along coronal suture and posterior margin, bordered with brown, most heavily anteriorly. Orange areas anterior of cross-bar of "T" to each side of coronal su ture. White lines along inner margins of eyes. * Pronotum mottled yellow-brown; band along an terio r margin with white marks and * dark spots, long orangish-yellow spot at middle. Scutellum yellowish-white with large brown spots in b asal angles, a few thin brown markings in middle. Elytra transparent, yellow, with several white patches. Veins brown. Brown spots along costa and commissural lin e , and in sev eral c e lls . Male pygofer less than 1.5 times as long as wide; apical portion sh o rt, tru n cate. P late and s ty le usual shape. Aedeagus in ventral view (Fig. 98) wide at base, tapered slightly to dor sal projection. Dorsal projection narrow, extended laterally RECOGNITION CHARACTERS Small, blunt-headed; genitalia distinctive.

SPECIMENS EXAMINED (1) MEXICO - Chiapas: Mont Grande (Holotype: DMDC).

DISTRIBUTION Mexico. 142 Osbornellus tumidus DeLong

Osbornellus tumidus DeLong. 1942: 100; Metcalf 1965: 2197.

Type locality: Mexico.

DESCRIPTION Vertex rounded; median length less than distance between eyes at posterior margin. Light apical spot with curved line to each side widened at middle and just reaching ocellus. ApicaL spot also connected to wide, diamond-shaped light spot poster iorly. Wide, light inverted ’'T,r-shaped mark along coronal suture and posterior margin. All light marks bordered with brown. White lines along inner margins of eyes. Rest of vertex dark yellowish. Pponotum light brown; whitish band along anterior margin with several dark spots. Scutellum pale yellow-white, with dark spots in basal angles. In lateral view, dorsal projection long, curved caudad. Aedeagus narrow, curved slightly dorsad, then bent abruptly anteriorly forming long, sharp, pointed apical tooth extended anteriorly; short tooth about halfway along length of aedeagus curved dorsad and anteriorly. (Description of genitalia taken from DeLong 1942). Length 4 mm.

TYPE MATERIAL Holotype male - Tag 1: Mont Grande, Chiap. IH-28-31. M. F. 2080; Tag 2: J. Parra Coll. (DMDC). (genitalia missing). SPECIMENS EXAMINED (4) ARIZONA - Pima Co.: Mt. Lemmon Road (Holotype: OSUO)j

Santa Cru2 Co.; Nogales (Allotype: OSUO); countv unspecified Sabino Canyon (2 paratypes: AMNH).

DISTRIBUTION Arizona. 140 Ventral processes wide, almost straight and parallel-sided, ta pered only near ends; apices slightly convergent. Main stem very narrow, pointed, distinctly shorter than ventral processes. In lateral view (Fig. 97), dorsal projection long, curved caudad then slightly dorsad at tip. Main stem long, slender, curved gently dorsad. Ventral processes arising at base of stem, slen der, curved dorsad then bent slightly caudad on apical half, lying next to stem for most of length. Posterior margin of female 7th sternite (Fig. 228) strongly, roundedly produced; sides tapered gradually for most of length, then more sharply to rounded tip . Length 4.5 mm.

TYPE MATERIAL Holotype male - ARIZ. Pima Co. Mt. Lemmon Road. 42001. 27 Apr. 73. Oman. (OSUO). Allotype female - ARIZ. Santa Cruz Co. Nogales, black It. 10 July 1972. Baine. (OSUO). Paratypes - 2 males from Sabino Canyon, St. Catalina Mts., Ariz. (AMNH).

RECOGNITION CHARACTERS Heavy dark brown markings throughout; shape of aedeagus distinctive. 139 Osbornellus obscurus n. sp. (Figs. 96, 97, 228)

Type locality: Arizona.

DESCRIPTION Vertex rounded; median length about equal to distance be tween eyes at posterior margin. Round white spot at apex with thin wavy line extending to ocellus on each side, bordered with dark brown. Diamond-shaped spot just behind apex. Light invert ed 1,T"-shaped mark along coronal suture and posterior margin heavily bordered with brown, especially at apex of coronal su ture; cross-bar of ,fTM not reaching eyes. White lines along inner margins of eyes slightly expanded anteriorly just behind dark line back of ocelli. Areas between marginal lines and "Tn- shaped mark brown. Pronotum mottled gray-dark brown with band of light and dark spots along anterior margin. Scutellum with light brown median band and brown spots in basal angles a ll margined with dark brown; four white spots along anterior margin, one on each lateral margin. Elytra transparent, generally whitish with a l l veins heavily marked with dark brown. Most c e lls with d is tinct white and dark brown spots. Overall dark appearance. Male pygofer slightly less than twice as long as greatest width; apical portion short, narrow, rounded at sides to rounded point. Plate and style usual shape. Aedeagus in ventral view (Fig. .96) somewhat square at base, la te r a l margins almost straight from base to just below tips of ventral processes. paratypes i CNCI).

DISTRIBUTION Mexico. 137 on apical h a lf. S tyle usual shape. Aedeagus in v en tra l view (Fig. 94) lyre-shaped, short basal portion rounded inward on both sides to bases of ventral processes. Ventral processes curved out then in, tips pointed straight caudad, gradual taper ing from bases to tips. Main stem narrow, truncate, much shorter than ventral processes. In lateral view (Fig. 95), dorsal pro jection narrow and straight dorsad. Main stem appearing to arise halfway along dorsal projection, wide, curved dorsad, truncate. Ventral processes long, very narrow, widely separated from main stem at base, curved slightly dorsad then slightly caudad. Posterior margin of female 7th sternite (Fig. 227) strongly, roundedly produced. Length 4.5-5 mm.

TYPE MATERIAL Holotype male - 10 mi. W. El Salto, Dgo., MEXICO, 90001. 29.V II.1964. d. E. H. Martin. (CNCI). Allotype female - same as holotype. (CNCI). Paratypes - 3 males, 1 female same as holotype; 1 female same except 8.VII.1964, W. C. McGuffin. (CNCI).

RECOGNITION CHARACTERS Broad vertex with two marginal lin e s, round dot ju s t behind at middle; lyre-shape of aedeagus in ventral view.

SPECIMENS EXAMINED (7) MEXICO - Durango; El Salto. (Holotype, allotype, 5 Osbornellus castaneus n. sp. (Figs. 94, 95, 227)

Type locality: Mexico.

DESCRIPTION Vertex broad, rounded; median length about two-thirds as great as distance between eyes at posterior margin. Narrow pale band along anterior margin connecting ocelli, bordered below by wide orange-brown band blending into dark brown face, and above by narrow dark brown band, slightly wider along median half than at ends. Small round pale dot just back of marginal lines at middle, more-or-less bordered with brown. Most of vertex orange- brown. Faint whitish inverted ITT"-shaped mark lying along coro nal suture and posterior margin, bordered anteriorly and at sides with brown. Pronotum mottled orange-brown, with band of irregular light areas and dark spots along anterior margin, Scu- tellum with wide median band and large spots in basal angles orange-brown. White spots in corners, two more along anterior margin and one halfway along each lateral margin. Elytra trans parent, yellowish-orange with some white patches, especially along commissural line and appendices. Brown spots at apices of claval suture, claval veins and costal veinlets. Some veins near tip s marked with brown. Male pygofer more than twice as long as greatest width; api cal portion short, narrow, pointed. Basal portion of plate some what square; apical portion narrow, expanded slightly and plumose (9: USNM), Rio Esteban (1: USNM), Rdo Hato (2: USNM), Sapo- t i l i a (X: USNM), Tocumen (1: USNM), V illa Real (1: USNM); Canal Zone; Alhajuela (1: DMDC), Ft. Clayton (2: DMDC), Ft. Davis (2: USNM), Gamboa (2: DMDC), Madden A ir S trip (3: USNM), locality unspecified (1: USNM).

DISTRIBUTION Mexico through C entral America in to northern South America. 134 EL SALVADOR - Puerto La Libertad (10: DMDC), San Salvador (6: DMDC) (3: USNM). GUATEMALA - A m ititlan (1: DMDC), Lake Peten (1: DMDC), S ta. Lucia & Patulul (8: DMDC), Yaxha (2: DMDC). MEXICO - Chiapas: Barra Honda (1: DMDC), Esmerelda (2: DMDC), Finca Belem (1: DMDC), Finca M aravillas (2: DMDC), Finca Frusia (1: DMDC), Finca Vergel (53: DMDC), Finca Victoria (1: DMDC), Huehuetan (1: DMDC), La Florida (1: DMDC), Monte Alto (5: DMDC), Mont Grande (4: DMDC), Plancha Piedra (1 paratype of capitatus: DMDC), Saltenango (1: DMDC), locality unspecified (-2: DMDC); Guerrero: Balsas (2: DMDC), Cocula (Holotype and 2 paratypes of capitatus: DMDC), Pandancuarec (1: DMDC); Morelos: Amacuzac (1: DMDC); Oaxaca: Chiltepec (1: DMDC), Lachichila (3: DMDC), Pasa Cocuyo (3: DMDC), Rancho Montor (1: DMDC), Sebastopol (1: DMDC), Tolosa (1: DMDC), Yazalaxl (1: DMDC); Puebla: Zacatepec (1: DMDC); Quintana Roo: Cozumel I s . (24: USNM); San Luis Potosi: Tamazunchale (47: DMDC), Valles (1: * DMDC); Tabasco: Focvicuc. (1: DMDC); state unspecified (7: DMDC). PANAMA - Aguadulce (1: DMDC), A lcal de Diaz (1: USNM), Algarrouc (1: USNM), A rraijan (4: USNM), Cermeno (2: USNM), Darien (1: USNM), David (1: USNM), Guarare (1: USNM), Las Cumbres (1: DMDC), Las Palmas (1: USNM), La Yeguada (1: USNM), Los Cruces (3: USNM), Los Lajos (3: USNM), Los Santos (4: USNM), Mandinga River (1: USNM), Mojinga Swamp (3: DMDC), Naranjal (1: USNM), Pacora (7: USNM), Paris (2: USNM), Patino 133 rugose for most of length, apices pointed. Posterior margin of female 7th sternite (Fig. 226) with long, triangular median projection, tip truncate. Length 4-4.5 mm. The types of Osbornellus capitatus DeLong and Martinson have been examined by the author and determined to be synonymous with affinis (Osborn). The name "capitatus" was preoccupied by a species described by DeLong and Knull in 1941 and should not have been given to the 1976 species of DeLong and Martinson; these two species must not be confused.

TYPE MATERIAL Holotype female - Tag 1: Las Juntas, B olivia. Steinbach, C o ll.; Tag 2: Dec., 1913; Tag 3: Carn. Mus. Acc. 5066. (ICCM). Allotype male - Tag 1: Minca, Colombia. Acc. No. 1999; Tag 2: May, 1898. (ICCM). Paratype - 1 female same as holotype. (ICCM).

* RECOGNITION CHARACTERS Bright yellow color; aedeagus distinctive; ventral processes rugose for most of length.

SPECIMENS EXAMINED (306) BOLIVIA - Las Juntas (Holotype: ICCM). BRITISH HONDURAS - Punta Gorda (17: USNM), Rio Temash (5: USNM). COLOMBIA - Minca (Allotype and 1 paratype: ICCM), 132 Osbornellus affinis (Osborn) (Figs. 92, 93, 226)

Scaphoideus affinis Osborn. 1923: 39. Osbornellus affinis (Osborn). Oman 1938: 369; Linnavuori 1959: 216; Metcalf 1965: 2178. Osbornellus capitatus DeLong and Martinson, 1976b: 587. (Type lo c a lity : Mexico). NEW SYNONYMY.

Type locality: Bolivia.

DESCRIPTION Vertex rounded; median length slightly less than width be tween eyes at posterior margin. Bright light yellow, unmarked. Eronotum s lig h tly darker, with f a in t band along a n te rio r margin. Scutellum light yellow with brown spots in basal angles. Elytra transparent, yellow, with faint brown spots at apices of claval suture and claval veins, rarely also at ends of costal veinlets. Male pygofer less than twice as long as greatest width; api cal portion oblong, sides rounded to broad point. Plate and style usual shape. Aedeagus in ventral view (Fig. 92) slender. Ventral processes arising at about one-third total length of aedeagus, narrow, divergent, faintly rugose for most of length, apices pointed. Tip of main stem truncate. In lateral view (Fig. 93), dorsal projection slender, rounded at apex, pointed dorso-caudad. Main stem slender, curved dorsad then caudad near tip. Ventral processes widened at base, narrow and faintly Finca Vergel (allotype and 280 paratypes: DMDC), Finca Victoria (9 paratypes: DMDC), Huehuetan (1: DMDC), Huixtle (2: DMDC), La Prusia (1: DMDC), Mont Grande (2 paratypes: DMDC), Ovando (2: DMDC), Flancah Piedra (1: DMDC), San Cristobal (2: DMDC), San Luis (1: DMDC), Santa Isabel (2: DMDC), Santa Julia (2: DMDC), Tuxtla Gujierrez (1: DMDC); Guerrero: Cocula (2: DMDC); Jalisco: Guadalajara (1: DMDC); Oaxaca: Chichicazapa (1: DMDC), Chiltepec (8 including 7 paratypes: DMDC), Lachi- c h ila (2: DMDC), Rancho Monter (3: DMDC), San C ristobal (1: DMDC), Yazalaxl (1: DMDC), Zoyaltepec (2: DMDC); Puebla: Zacatepec (3: DMDC); Quintana Roo: Petacab (2: DMDC); San Luis Potosi: Tamazunchale (1: DMDC); Tabasco: Frontera (1: DMDC), Pocvicuc. (3: DMDC), Reforma (1: DMDC), Zapata (2: DMDC); Veracruz: Cardel (1: DMDC), Cordoba (1: DMDC), Coatepec (Holotype: DMDC), Coscomatepec (1: DMDC), Fortin-'(4: DMDC), La Forestal (3: DMDC), Monte Alto (1: DMDC), Presidio (1: DMDC), Tierra Blanca (1: DMDC), Xico (1: DMDC); state unspeci- » fied (37: DMDC).

DISTRIBUTION Mexico, British Honduras, Guatemala. 130 Posterior margin of female 7th sternite (Fig* 225) sinuate, shallowly concave to each side of short, broad, rounded median proj ection. Length 4.5-5 mm.

TYPE MATERIAL Holotype male - Coatepec, V*cruz. 8-14-34. M. F. 3617. (DMDC). Allotype female - M. F. 4223, Vergel, Chia. V-20-3S. (DMDC). Paratypes - 101 males and 179 females from Vergel, 3 males from Esmerelda, 1 male from Finca Maravillas, 2 males from Monte Grande, 2 males from Barra Honda, 2 males and 6 females from F. la V ictoria, a l l in Chiapas, and 6 males and 1 female from Chiltepec, Oaxaca, all in Mexico. (DMDC).

RECOGNITION CHARACTERS Light yellow color; distinctive shape of aedeagus.

SPECIMENS EXAMINED (444) BRITISH HONDURAS - Blue Creek (1: DMDC). GUATEMALA - Depto. Escuintla (14: USNM), Guatemala City (1: DMDC), Lake Peten (3: DMDC). MEXICO - Chiapas; Barra Honda (2 paratypes: DMDC), Esme relda (3 paratypes: DMDC), Finca Aurora (19: DMDC), Finca Belem (4: DMDC), Finca Esperanza (1: DMDC), Finca Hanover (1: DMDC), Finca Lubeca (1: DMDC), Finca Maravillas (1 paratype: DMDC), 129 Osbornellus reversus DeLong (Figs. 89-91, 225)

Osbornellus reversus DeLoncr. 1942: 100; Metcalf 1965: 2192.

Type locality: Mexico.

DESCRIPTION Vertex rounded; median length less than distance between eyes at posterior margin. Pale yellow, no distinct markings. Pronotum slightly tinged with brown, faint band along anterior margin. Scutellum light yellow, with faint spots in basal an gles. Elytra transparent, pale yellow, with brown spots at api ces of claval suture, claval veins and costal veinlets and on some cross-veins; middle pair of brown spots along commissural line larger and darker than rest. Male pygofer (Fig. 91) slightly less than twice as long as greatest width, both sides rounded to tip. Plate and style usual shape.’ Aedeagus in ventral view (Fig. 89) with basal portion longitudinally rectangular. Ventral processes arising at about one-third total length of aedeagus, slender, divergent, rugose on apical halves, much longer than main stem. In lateral view (Fig. 90), dorsal projection thumblike, broad at base, with short nar row tip pointed caudad. Main stem slender, bent caudad, then ventrad. Ventral processes widely separated from stem at base, wide at base, rest narrowed and tapered gradually to pointed apices, curved dorsad just above wide basal portions. 128 truncate and slightly indented at tip. Length of male 5 nun., female 5.5 mm.

TYPE MATERIAL Holotype male - Bolivia: San Esteban. 49 Km. N. Sta. Cruz. 26-X-59. El. 1120 f t . (DMDC). Allotype female (here designated) - Tag 1: No. 519-48. Tingo Maria, Peru. 14-VIII-1948; Tag 2: Piedra Coll. (USNM). Paratype - 1 male same as holotype. (DMDC).

RECOGNITION CHARACTERS Most easily recognized by shape of aedeagus.

SPECIMENS EXAMINED (6) BOLIVIA - San Esteban (3 including holotype and 1 paratype: DMDC). PERU - Tingo Maria (3 including allotype: USNM).

DISTRIBUTION Bolivia, Peru. 127 Osbornellus circulus DeLong and Martinson (Figs. 86-88, 224)

Osbornellus ciroulus DeLong and Martinson, 1976a: 431.

Type locality: Bolivia.

DESCRIPTION Vertex rounded; median length slightly less than distance between eyes at posterior margin. Yellowish-brown with faint spot to each side of coronal suture. Pronotum brownish, with irregularly light and dark-marked band along anterior margin. Scutellum light brown, with dark brown spots in basal angles. Elytra transparent, yellowish, with dark brown dots at apices of claval suture, claval veins and costal veinlets. Male pygofer (Fig. 38) about twice as long as greatest width; apical portion elongate-triangular, with rounded point, Plate and style usual shape; apical portion of style long, stra ig h t and slender. Aedeagus in ven tral view (Fig. 86) with ventral processes arising near base, divergent, slender, expanded slightly below long, narrow apices, much longer than main stem. In lateral view (Fig. 87), dorsal projection short, narrow, pointed. Main stem curved dorsad, then slightly caudad at tip. Ventral processes widely separated from stem at base, slender, curved dorsad, expanded slightly below long, narrow apices. Female 7th sternite (Fig, 224, here designated) with poster ior margin strongly produced, concave on both sides, tips 126 TYPE MATERIAL Holotype male - Iguala, G'.ro. IX-11-39. (DMDC). Allotype female - M. F. 4744. Vergel, Chis. VII-2->35. (DMDC). Paratypes - 3 males same as holotype; 7 males, 6 females same as allotype. (DMDC).

RECOGNITION CHARACTERS Rounded apical portion of pygofer, shape of aedeagus dis tin c tiv e ; creamy yellow color unusual.

SPECIMENS EXAMINED (74) BRITISH HONDURAS - Blue Creek (1: DMDC). MEXICO - Chiapas: Esmerelda (2: DMDC), Finca Aurora (1: DMDC), Finca Vergel (17 including allotype and 13 paratypes: DMDC); Guerrero: Balsas (1: DMDC), Cocula (2: DMDC), Iguala (38 including holotype and 3 paratypes: DMDC); Morelos: Cuantla (1: DMDC); Oaxaca: Eloxochitlan (1: DMDC), Tehuantepec (1: * DMDC); Quintana Roo: Santa Cruz (1: DMDC); San Luis Potosi: Tamazunchale (2: DMDC); Tamaulipas: El Mante (4: DMDC); Veracruz: Cardel (1: DMDC); locality unspecified (2: DMDC).

DISTRIBUTION Mexico, British Honduras. 125 Osbornellus pandus DeLong (Figs. 83-85)

Osbornellus pandus DeLong. 1941b: 267; Metcalf 1965: 2192.

lype locality: Mexico.

DESCRIPTION Vertex broad, rounded; median length slightly less than dis tance between eyes at posterior margin. Creamy yellow with no d is tin c t markings. Pronotum also creamy yellow, with fa in t band along anterior margin. Scutellum somewhat lighter yellow, with no distinct markings. Elytra transparent, yellowish, with one or two small brown spots along commissural line, Male pygofer (Fig. 85) much less than twice as long as greatest width; apical portion oblong, tip broadly, evenly rounded. Plate and sty le usual shape. Aedeagus in v en tral view (Fig. 83) widened just below base of ventral processes. Ventral processes slender, straight, tapered at tips, narrowly separated. In lateral view (Fig. 84), dorsal projection short, narrow, pointed, curved slightly caudad. Main stem slender, apical half curved dorsad. Ventral processes abruptly narrowed just above base, then tapered to tips, curved slightly dorsad, then caudad near tip . Posterior margin of female 7th sternite with broki rounded projection, slightly indented at tip. Length 5 mm. 124 t i p s . Female 7th sternite with broad median tooth, tapered to truncate tip, tip slightly indented at middle. Length 5 mm.

TYPE MATERIAL Holotype male - Bolivia: San Esteban. 49 Km. N. Sta. Cruz. 26-X-59. E l. 1120 f t . (DMDC). Allotype female - same as holotype. (DMDC). Paratypes - 5 males same as holotype. (DMDC).

RECOGNITION CHARACTERS Resembling many species; apical portion of style unusually long and narrow, aedeagus distinctive.

SPECIMENS EXAMINED (24) BOLIVIA - San Esteban (24 including holotype, allotype and 5 paratypes: DMDC).

* DISTRIBUTION B olivia. 123 Osbornellus lunus DeLong (Figs. 80-82)

Osbornellus lunus DeLong, 1976: 263.

Type locality: Bolivia.

DESCRIPTION Vertex angulate; median length about equal to distance be tween eyes at posterior margin. Variable yellow-brown with faint wavy line along anterior margin, light stripe from apex to end of coronal suture, faint orangish area to each side of anterior por tion of coronal suture. Pronotum brownish, light band along an terior margin with large cark spots. Scutellum yellowish with brown spots in basal angles. Elytra transparent, yellow, with usual brown spots along costa and commissural lin e , and along some cross-veins. Male pygofer (Fig. 82) about twice as long as greatest width;* apical portion more rounded v en trally than d o rsally , apex pointed. Plate usual shape. Style usual shape; apical portion q u ite long and slender. Aedeagus in v e n tra l view (F ig. 80) with basal portion wide, rounded at sides. Ventral processes about as long as basal portion of aedeagus, narrowly separated, tips narrowed and slightly divergent. In lateral view (Fig. 81), dorsal projection narrow, curved slightly caudad. Main stem broad at base, curved dorsad, tip expanded caudally. Ventral processes bent dorso-caudad, narrow, expanded slightly below 122 (26: USNM), F t. Sherman (1: USNM), Loma Borracha (4: USNM), Madden Dam (4: USNM), Mandinga R. (8: USNM), Mojinga Swamp (70: USNM), locality unspecified (21: USNM). TRINIDAD - Port-of-Spain (1: USNM), locality unspecified 4 (1: USNM). VENEZUELA - San Esteban (11: USNM).

DISTRIBUTION Mexico to northern South America. 121 TYPE MATERIAL Holotype male - Tag 1: PANAMA Pan. Prov. Tocumen. 6-1- 1953; Tag 2: F. S. Blanton Collector. (USNM). Allotype female - same as holotype. (USNM). Paratypes - 4 same as holotype (RLCI) (USNM); 4 from Alha- juelo, Pan. (RI£I) (USNM); 1 from Cano Saddle, Gatun Lake, Panama (USNM); 2 from Sabanas, Panama (USNM).

RECOGNITION CHARACTERS Distinctive curve to main stem and ventral processes of aedeagus in lateral view.

SPECIMENS EXAMINED (376) COLOMBIA - A tlantico (6: USNM), Camp Curiche (1: DMDC), Cundinamarca (4: USNM). MEXICO - San Luis Potosi: Tamazunchale (3: DMDC)• PANAMA - Arraijan (9: USNM), Barro Colorado Id. (7: USNM), Bat Cave (7: USNM), Boqueron (1: USNM), Cermano (1: ♦ USNM), Chepo (1: USNM), Chica (5: DMDC), Darien Prov. (73: DMDC), El Real (4: USNM), El R etiro (1: USNM), Gorgona (4: USNM), Juan Diaz (5: USNM), La Canara (4: USNM), Las Cumbres (30: DMDC), La Venta (4: USNM), Pacora (1: USNM), P^ja (1: USNM), Palm Beach (3: USNM), Pan de Azucar (5: USNM), Paris (1: USNM), Patino (15: USNM), Pedreaga (1: USNM), Potesa (4: USNM), Pt. Chorresa (2: USNM), Pto. Farallon (2: USNM), Rio Hato (8: USNM), Tocumen (9 including holotype: USNM); Canal Zone: Cano Saddle (1: USNM), F t. Clayton (6: USNM), F t. Kobbe 120 Osbornellus compressus Linnavuori (Figs. 78, 79, 223)

Osbornellus compressus Linnavuori. 1959: 217.

Type lo c a lity : Panama.

DESCRIPTION Vertex rounded; median length slightly greater than distance between eyes at posterior margin. Yellowish-brown with faint spots to each side of coronal suture. Pronotum yellowish-brown with irregularly light and dark band along anterior margin. Scu- tellum light yellowish-brown with darker spots in basal angles. Elytra transparent, light yellow, with usual brown spots along costa and commissural line; some cross-veins brown. Male pygofer about twice as long as greatest width. Plate usual shape; apical portion very narrow. Style usual shape; apical portion rather short. Aedeagus in ventral view (Fig. 78) slender, tip of main stem expanded laterally. Ventral pro cesses slender, narrowly separated, tips slightly divergent. In lateral view (Fig. 79), dorsal projection short, truncate. Main stem slender, curved dorsad almost in semicircle, tip slightly recurved caudad. Ventral processes slender, tapered at tips, curved dorsad, only slightly divergent from main stem. Posterior margin of female 7th sternite (Fig. 223) with very broad, roundedly triangular projection. Length 3.5-4.5 mm. 119 Length 5 nun.

TYPE MATERIAL Holotype male - Tag 1: Brasilis Silvestrij Tag 2: Urum Corumba. (MHHN). Paratype - 1 male same as holotype. (RI£I),

RECOGNITION CHARACTERS Main stem of aedeagus stoutj ventral processes stout with unique serrate dorsal expansions.

SPECIMENS EXAMINED (0)

DISTRIBUTION B razil.

« 118 Osbornellus linnavuori DeLong (Figs. 76, 77)

Osbornellus hvalinus (Osborn). Linnavuori 1959: 217, Osbornellus linnavuori DeLong. 1976: 265.

Type lo c a lity : B razil.

DESCRIPTION Vertex rounded; median length distinctly less than distance between eyes at posterior margin. Light yellowish-brown with faint spot to each side of coronal suture near inner margins of eyes. Pronotum brown, with lig h te r, irre g u la rly marked band along anterior margin. Scutellum light brown with darker spots in basal angles. Elytra transparent, yellow, with usual brown spots along costa and commissural lin e . Male pygofer with apical portion rounded on each side to broadly pointed apex. Plate and style usual shape. Aedeagus in ventral view (Fig. 76) broad at base. Ventral processes appressed, broad at base, sharply tapered to half their length, pointed tooth on each outer margin'just above halfway, apical portions tapered to narrow, divergent tips. In lateral view (Fig. 77), dorsal projection short, narrow, pointed. Main stem stout bent dorsad, tip expanded, rounded, slightly recurved caudad. Ventral processes very stout at base, each with serrate, triangular dorsal expansion, tips narrow. Female unknown. 117 TYPE MATERIAL Holotype male - Bolivia: San Esteban. 49 Km. N. Sta. Cruz. 7-XII-S9. El. 1120 f t . (DMDC).

RECOGNITION CHARACTERS Aedeagus distinctive, especially in lateral view with wide, rounded tip of main stem and extremely narrow ventral processes.

SPECIMENS EXAMINED (1) BOLIVIA - San Esteban (Holotype: DMDC).

DISTRIBUTION B olivia. 116 Osbornellus eurvcephalus n. sp. (Figs. 73-75)

Type lo c a lity : B olivia.

DESCRIPTION Vertex broadly rounded; median length distinctly less than distance between eyes at posterior margin. Yellowish-brown, lighter along posterior margin with faint light stripes from apex to end of coronal suture, faint spots to each side of coronal su tu re . Pronotum lig h t yellowish-brown with irre g u la rly marked band along anterior margin. Scutellum light brown with large dark spots in basal angles. Elytra transparent, yellow, with brown spots at apices of claval suture, claval veins and costal v ein lets, a few brown spots along middle of e ly tra . Male pygofer (Fig. 75) s lig h tly more than twice as long as greatest width; apical portion narrow, curved on. both sides to rounded p o in t. P late and sty le usual shape. Aedeagus in v en tral view (Fig. 73) fairly wide at base, slightly expanded halfway to ventral processes. Ventral processes arising at two-fifths total length, slightly divergent, tapered at tips, much longer than main stem. In lateral view (Fig. 74), dorsal projection long, tapered, tip bent caudad. Main stem curved gently dorsad, tip expanded and rounded. Ventral processes long, straight, very narrow, directed dorso-caudad, divergent from main stem. Female unknown. Length 4.5 mm. 115 two-thirds their length. Female unknown. Length 4.5 mm.

TYPE MATERIAL Holotype male - Bolivia: San Esteban. 49 Km. N. Sta. Cruz. 26-X-59. E l. 1120 f t . (DMDC). Paratype - 1 male same as holotype. (DMDC).

RECOGNITION CHARACTERS Male pygofer unusually rounded along ventral margin; hooked tip of main stem of aedeagus unique.

SPECIMENS EXAMINED (2) BOLIVIA - San Esteban (Holotype, paratype: DMDC).

DISTRIBUTION B olivia. 114 Osbornellus hamatus DeLong and Martinson (Figs. 70-72)

Osbornellus hamatus DeLong and Martinson, 1976a: 431.

Type lo c a lity : B olivia.

DESCRIPTION Vertex rounded; median length about equal to distance be tween eyes at posterior margin. Yellowish-brown with faint spots near inner margins of eyes. Pronotum brown, with irregu la rly marked band along a n te rio r margin. Scutellum lig h t yellowish-brown with dark spots in basal angles. Elytra trans parent, yellowish, with brown spots at apices of claval suture, claval veins and costal veinlets. Male pygofer (Fig. 72) less than twice as long as greatest width, almost semicircular on ventral side, tip broadly rounded. Plate usual shape; apical portion long and narrow. Style usual shape;*apical portion bent slightly laterad at two-thirds its length. Aedeagus in v en tra l view (Fig. 70) with ventral pro cesses arising almost at base, narrowly separated and generally parallel, slightly sinuate, rugose on apical two-fifths, tapered at tips. In lateral view (Fig. 71), dorsal projection long, narrow and s tra ig h t. Main stem narrow, directed dorso-caudad, straight for most of length, apex curved slightly dorsad then sharply ventrad to form hook. Ventral processes narrow, bent sharply dorso-caudad at base, then slightly more dorsad at 113 stem fairly broad, bent dorsad just above base. Ventral pro cesses tapered to very narrow apices, appressed to, and shorter than, stem. Posterior margin of female 7th sternite (described under dicerus) with sturdy, broad median tooth, apical corners rounded, slightly indented at tip. Length 5-S.25 mm. The types of Osbornellus dicerus DeLong have been examined by the author and determined to be synonymous with resnublicanus (Berg).

TYPE MATERIAL Described from specimens from Paraguay, Uruguay and Argen tina (at least some in MHHN). Allotype female (here designated) - Bolivia: San Esteban. 49 Km. N. Sta. Cruz. 26-X-59. El. 1120 ft. (DMDC).

RECOGNITION* CHARACTERS Ventral processes of aedeagus unusual in being distinctly shorter than main stem.

SPECIMENS EXAMINED (121) BOLIVIA - San Esteban (120 including allotype and holotype, allotype and 111 paratypes of dicerus: DMDC). PARAGUAY - Vezenyi (1: MHHN).

DISTRIBUTION Paraguay, Uruguay, Argentina, Bolivia. 112 Osbornellus respublicanus (Berg) (Figs. 68, 69)

Deltoceohalus respublicanus Berg, 1879: 267. Osbornellus respublicanus (Berg). Linnavuori 1959: 217. Osbornellus dicerus DeLoncr. 1976: 262. (type locality: B olivia). NEW SYNONYMY.

type locality: ?

DESCRIPTION Vertex rounded; median length less than distance between eyes at posterior margin. Brownish-yellow, with faint indication of spot to each side of coronal suture. Fronotum same color, with lighter band along anterior margin. Scutellum lighter yel low with dark spots in basal angles. Elytra transparent, yellow, with brown dots a t apices of clav al veins and co stal v ein lets and on some cross-veins. Male pygofer slightly less than twice as long as greatest width, straight on ventral margin; apical portion more-or-less triangular, with rounded apex. Plate usual shape, plumose at tip. Style usual shape, apical portion long and slender. Basal portion of aedeagus in ventral view (Fig, 68) wide, rounded at sides, then sharply tapered. Main stem very narrow. Ventral processes narrow, shorter than stem, appressed for most of length, slightly divergent at tips. In lateral view (Fig. 69), dorsal projection long, straight, tapered to sharp tip. Main I l l Female unknown. Length 4.5 mm.

TYPE MATERIAL Holotype male - Bolivia: San Esteban. 49 Km. N. Sta. Cruz. 26-X-S9. E l. 1120 f t . (DMDC). Paratypes - 1 male same as holotype; 2 males same except X II-7-59. (DMDC).

RECOGNITION CHARACTERS Rounded pygofer with spine unique; aedeagus closest to asperus but more slender, ventral processes not so heavily rugose.

SPECIMENS EXAMINED (4) BOLIVIA - San Esteban (Holotype, 3 paratypes: DMDC).

DISTRIBUTION B olivia. 110 Osbornellus spinellus DeLong and Martinson (Figs. 65-67)

Osbornellus spinellus DeLong and Martinson, 1976a: 429.

Type locality: Bolivia.

DESCRIPTION Vertex rounded; median length slightly less than distance between eyes at posterior margin. Brownish-yellow, with faint spot to each side of coronal suture. Pronotum lig h t brown, with irregularly marked band along anterior margin. Scutellum light brownish-yellow, with darker spots in basal angles. Elytra transparent, yellowish, with small brown dots at apices of claval suture, claval veins and costal veinlets, and on a couple cross veins . Male pygofer (Fig. 67) much less than twice as long as greatest width; apical half almost hemispherical with long spine on inside of apical margin directed ventrad and basad. Plate and style usual shape; apical portion of style very narrow, inner corner of tip truncate. Base of aedeagus in ventral view (Fig. 65) square. Ventral processes slender basally, sharply expanded at three-fifths their length, then tapered to pointed apices; apical portions rugose along outer margins. In lateral view (Fig. 66), dorsal projection thumblike, bent sharply caudad just above base. Main stem curved slightly dorsad, knobbed at tip. Ventral processes narrow, straight, directed slightly dorsad. 109 slightly curved dorsad, tapered gradually to tip except for tooth on each outer margin* Female unknown. Length 5 mm.

TYPE MATERIAL Holotype male - Bolivia: San Esteban. 49 Km. N. Sta. Cruz. 26-X-59. El. 1120 f t . (DMDC). Paratype - 1 male same as holotype. (DMDC).

RECOGNITION CHARACTERS Aedeagus most d is tin c tiv e featu re; tooth on outer margin of each ventral process unusual.

SPECIMENS EXAMINED (2) BOLIVIA - San Esteban (Holotype, paratype: DMDC).

DISTRIBUTION ' B olivia. 108 Osbornellus antlerus DeLong and Martinson (Figs. 63, 64)

Osbornellus antlerus DeLong and Martinson, 1976a: 429.

Type lo c a lity : B olivia.

DESCRIPTION Vertex rounded; median length less than distance between eyes at posterior margin. Yellowish-brown with at most only faint spots to each side of coronal suture. Pronotum light brown, with in d is tin c t band along a n te rio r margin. Scutellum yellow-brown, with brown spots in basal angles. Elytra trans parent, light yellow-brown, with small brown dots at apices of claval suture, claval veins and costal veinlets. Couple brown spots on cross-veins along middle of elytra. Male pygofer about twice as long as greatest width; apical portion somewhat triangular, with rounded tip. Plate usual shape,•slightly expanded below tip. Style usual shape; apical portion slender on ap ical h a lf, t i p expanded m esally. Aedeagus in ventral view (Fig. 63) widest at base of ventral processes. Ventral processes much longer than stem, separated at base, api cal halves slightly divergent; each process with pointed tooth on outer margin at three-fifths total length, expanded above tooth then tapered to tip. Main stem narrow, slightly bifid at tip. In lateral view (Fig. 64), dorsal projection straight. Main stem curved dorsad, tip bent caudad. Ventral processes only very Length 5.5 nun.

TYPE MATERIAL Holotype male - Sinchono, Peru. 11-43. (DMDC). Allotype female - same as holotype. (DMDC). Paratypes - 10 males, 2 females same as holotype; 1 male same except 7-44. (DMDC).

RECOGNITION CHARACTERS Male easily recognized by shape of aedeagus; female with very distinctive 7th sternite.

SPECIMENS EXAMINED (15) PERU - Sinchono (Holotype, allotype, 13 paratypes: DMDC)

DISTRIBUTION Peru. 106 Osbornellus pullioalbus n. sp. (Figs. 61, 62, 222)

Type locality: Peru.

DESCRIPTION Vertex rounded; median length distinctly less than distance between eyes at posterior margin. Dusky dark yellow, with no distinguishable marks. Pronotum same color, with brownish band along anterior margin. Scutellum slightly lighter, with large orange-brown spots in basal angles. Elytra transparent, yellow ish, with dark brown spots at apices of claval suture, claval veins and costal veinlets. Male pygofer 2.5 times as long as greatest width; apical portion narrow, both sides and tip rounded. Plate usual shape; apical portion expanded slightly near base and near tip. Style usual shape; inner corner of apex expanded. Aedeagus in ventral view (Fig, 61) widened above base. Ventral processes long, slen- * der, straight, tapered only slightly, separated from base and not divergent. In lateral view (Fig. 62), main stem and ventral processes widely divergent. Main stem slightly sinuate, pointed generally dorsad. Straight, narrow dorsal projection arising halfway along stem, pointed dorsad. Ventral processes with basal one-fifth wide and pointed caudad, apical four-fifths nar row, straight, pointed dorso-caudad. Female 7th sternite (Fig. 222) more-or-less triangular, apical corner lengthened, tip bifid. DISTRIBUTION Panama to Argentina. 104 main stem at base, tapered gradually from wide bases to narrow pointed apices. Posterior margin of female 7th sternite (Fig. 221) with broad rounded median projection, slightly indented at middle. Length male 4.25-4.5 mm., female 5 mm.

TYPE MATERIAL Holotype male - Tag 1: Prov. d el Sara B olivia, 450 m. J . Steinbach; Tag 2: Carn, Mus. Acc. 6443. (ICCM). Allotype female - same as holotype. (ICCM). Paratypes - 7 males, 1 female same as holotype; 1 male from Barra, Brazil; 1 male from Santarem, Brazil. (ICCM).

RECOGNITION CHARACTERS Very similar to affinis in appearance, but base °f aedeagus wider in ven tral view, main stem curved more dorsad, ven tral processes not rugose; genitalia similar to vicious but ventral processes of aedeagus more divergent and not curved dorsad at ■ tip, general color lighter.

SPECIMENS EXAMINED (14) ARGENTINA - Loreto Missiones (1: DMDC). BOLIVIA - Province del Sara (Holotype, allotype, 8 para types: ICCM). BRAZIL - Barra (Paratype: ICCM), Santarem (Paratype: ICCM). PANAMA - Tocumen (1: MHHN). 103 Osbornellus hvalinus (Osborn) (Figs. 59, 60, 221)

Scaphoideus hvalinus Osborn, 1923: 38• Osbornellus hvalinus (Osborn). Oman 1938: 369; DeLong 1941b: 267, 1942: 100; Linnavuori 1955: 100; Metcalf 1965: 2189.

Type lo c a lity : B olivia.

DESCRIPTION Vertex roundedly angulate; median length slightly less than distance between eyes at posterior margin. Light yellow, marked with only faint spot to each side of coronal suture halfway to eye. Pronotum mottled yellow, indistinct band along anterior margin with irregular light and dark spots. Scutellum light, yellow with large, darker spots in basal angles. Elytra trans parent, yellow, with faint brown dots at apices of claval suture, claval veins and costal veinlets. Some specimens with a couple brown dots along midlines of elytra. Male pygofer about twice as long as greatest width, rounded on ventral margin; apical portion elongate-triangular, straight on dorsal margin, with rounded tip. Elate and style usual shape. Aedeagus in ventral view (Fig. 59) with basal portion square. Ventral processes narrow, slightly expanded along median half, narrowly separated basally, apical two-thirds divergent. In lateral view (Fig. 60), main stem curved dorsad, forming semi circle with dorsal projection. Ventral processes separated from 102 Posterior margin of female 7th sternite (Fig. 220) with broad, triangular median projection, rounded at tip. Length 5 mm.

TYPE MATERIAL Holotype male - Tag 1: PERU - Hda. Mascoitania Urwald, 10- 12.IX.1957. ANDEN-EXPEDITION; Tag 2: Zeichnung-567. VII-1961. Fr. H eller. (SMNK). Allotype female - same as holotype. (SMNK). Paratype - 1 same as holotype. (RLCI).

RECOGNITION CHARACTERS Darker than most yellow ish, larg ely unmarked species; pygofer unusually long and narrow; aedeagus readily distinguishable.

SPECIMENS EXAMINED (3) PERU - Hda. Mascoitania (Holotype, allotype: SMNK), Sinchono (1: DMDC).

DISTRIBUTION Peru. 101 Osbornellus vicinus Linnavuori and Heller (Figs. 56-58, 220)

Osbornellus vicinus Linnavuori and Heller, 1961: 10.

Type lo c a lity : Peru.

DESCRIPTION Vertex roundedly angulate; median length about equal to dis tance between eyes at posterior margin. Vertex, pronotum and scutellum dark brownish-yellow. No distinct marks on vertex. Band along anterior margin somewhat darker thab rest of pronotum. Brownish spots in basal angles of scutellum. Elytra transparent, light yellow, with faint brown dots at apices of claval suture, claval veins and costal veinlets, and at ends of a couple cells. Male pygofer (Fig. 58) twice as long as greatest width; api cal portion long and narrow with pointed apex. Plate usual shape; long, narrow apical portion with.expanded area just below tip. Style usual shape; tip of apical portion expanded mesally. Basal portion of aedeagus in ventral view (Fig. 56) almost square. Ventral processes long, slender, very close except tips slightly divergent, expanded slightly along median halves. In lateral view (Fig. 57), main stem pointed dorso-caudad, curved dorsad near truncate tip, with short dorsal projection halfway between base and tip. Ventral processes curved dorsad, wide at base, narrowed at one-third their length, then tapered to sharp apices. TYPE MATERIAL Holotype male - Tag 1: COLOMBIA, Cauca 17 ton. S. E. Fopayan. 2000m. 10-1-1959. J. F. G. Clarke. (USNM). Paratypes - 1 males same as holotype; 1 male from Cundina- marca, Colombia. (USNM).

RECOGNITION CHARACTERS Small; markings on vertex fairly distinct; aedeagus readily distinguishable.

SPECIMENS EXAMINED (3) COLOMBIA - Cauca (Holotype and paratype: USNM), Cundina- marca ( Paratype: USNM).

DISTRIBUTION Colombia. 99 Osbornellus pusillus n. sp. (Figs. 54, 55)

lype locality: Colombia.

DESCRIPTION Vertex rounded; median length about equal to distance be tween eyes at posterior margin. Light yellow-brown with faint light streaks from apex to each ocellus and to end of coronal suture. Orange area to each side of anterior half of coronal suture, whitish area along posterior margin. Pronotum mottled light brown, with band of light and dark spots along anterior margin. Scutellum w hitish-yellow , with larg e brown spots in basal angles. Elytra transparent, light yellow, with usual brown dots along costa and commissural line, and at ends of some cells. Male pygofer about twice as long as greatest width. Plate usual shape, with long, narrow apical portion. Style usual shape. Aedeagus in v en tral view (Fig. 54) wide at base. Ventral a processes arising near base, narrowly separated along basal halves, apical halves divergent, tips turned back caudad, extend ing beyond main stem. In lateral view (Fig. 55), main stem pointed dorsad, expanded at one-third its length to form narrow dorsal projection, then tapered slightly to rounded tip. Ventral processes arising near base, separated from main stem, pointed dorsad, expanded slightly below sharp apices. Female unknown. Length 4 mm. especially aedeagus.

SPECIMENS EXAMINED (56) ALABAMA - Decatur (Cotype: HOCI). CONNECTICUT - Branford (1: HOCI). DELAWARE - locality unspecified (1: AMNH). DISTRICT OF COLUMBIA - Anacostia (1: HOCI). FLORIDA - Alachua Co. (1: FSCA)j county undetermined: Gainesville (2: HOCI), Orlando (4: DMDC), Sanford (1: FSCA). GEORGIA - Chester (1: HOCI). MARYLAND - Bowie (1: FSCA), Gibson I s . (1: FSCA). MISSISSIPPI - B iloxi (1: HOCI), Gulfport (1: HOCI), Pontotoc (1: HOCI), S ta rk v ille (1: HOCI), Waynesboro (1: HOCI), locality unspecified (1: HOCI). NEW JERSEY - Husted (2: AMNH), Lakehurst (5: AMNH). NEW YORK - Staten Id . (1: HOCI). OHIO - Adams Co.: N. Kenora (1: HOCI), Zanesville (1: HOCI),-locality unspecified (1: HOCI); Hocking Co. (5: HOCI). OKLAHOMA - Page (1: DMDC). PENNSYLVANIA - Black Gap (1: DMDC), Huntingdon (1: DMDC) TENNESSEE - C lark sv ille (4: DMDC), Dorain (1: DMDC), Waynesboro (1: SEMC). VIRGINIA - Cape Charles (8: DMDC), Cape Henry (1: FSCA), Falls Church (1: SEMC).

DISTRIBUTION Eastern U. S. Male pygofer (Fig. 52) about twice as long as greatest width; apical portion long, wide, strongly rounded along ventral margin and tip with row of short spines along apical portion of ventral margin. Plate (Fig. 53) gradually tapered to short, plumose apical portion, somewhat crenulate on outer margin. Style usual shape; apical portion curved slightly caudad. Aedea gus (Figs. 50, 51) bizarrely shaped - long, narrow basal portion extended straight caudad in line with forked ventral process; main stem extended dorsad at base of ventral process, with only very short dorsal projection then bent abruptly caudad and veh- trad, passing between forks of ventral process, and forked at tip . Posterior margin of female 7th sternite almost straight across, very slightly concave, and with very small, rounded pro- «r jection at middle. Length 5.5 mm.

TYPE MATERIAL Originally described from one specimen from Berkeley Springs, W, Va. and three from Decatur, Ala. The only type that I was able to locate is labeled ,,C0TYPE,, with the following information - Tag 1: Decatur, Ala. 7.Sept.’89; Tag 2: COTYPE (By H. Osborn) Scaphoideus unicolor. (HOCI).

RECOGNITION CHARACTERS Distinguished by dense brownish color without definite mark ings on vertex, pronotum or scutellum, and by unusual genitalia, Osbornellus unloolor (Osborn) (Figs. 50-53)

Scaphoideus oonsors unloolor Osborn. 1900a: 196, Scaphoideus unicolor Osborn. 1911: 255; Barber 1914: 535; DeLong 1916: 57; Horsfall 1916: 355; Van Duzee 1916: 69, 1917: 631; Britton 1920: 49; Osborn 1921: 10; DeLong 1923b: 96; Buys 1924: 49; Stearns 1927: 11; Leonard 1928: 164; Osborn 1928: 258; Brimley 1938: 94; Metcalf 1965: 2197. Osbornellus unicolor (Osborn). Ball 1932: 17; Beamer 1937: 96; DeLong and Caldwell 1937: 24; Brown 1939: 665; DeLong 1941b: 269; DeLong and Knull 1946: 32; Wene 1946: 132; Osborn and Knull 1947: 331; DeLong 1948: 206; Oman 1949: 122; Fattig 1955: 46; Metcalf 1965: 2198.

Type lo c a lity : ? - West V irginia or Alabama.

DESCRIPTION Vertex angulate; median length about equal to distance be tween eyes at posterior margin. Vertex, pronotum and scutellum overall dark yellow-brown. Vertex somewhat yellower than prono tum and scutellum with only faint hint of spots between coronal suture and eyes. Pronotum mottled, scutellum with orangish spots in basal angles. Elytra transparent, yellow, with brown along veins, at tips, in some cells and at apices of claval suture, claval veins and costal veinlets. 95 in line with basal portion of aedeagus. Posterior margin of female 7th sternite with short, broad median projection, slightly indented at middle. Length S.5-6 mm.

TYPE MATERIAL Holotype male - Tag 1: PERU - Hda. Mascoitania Urwald. 10- 12.IX.1957. Anden-EXPEDITION; Tag 2: Osbornellus spiniloba Lv.; Tag 3: Zeichnung 568. VII-1961. Fr. Heller. (SMNK). Allotype female - same as holotype. (SMNK). Paratypes - 2 males same as holotype. (RLCI).

RECOGNITION CHARACTERS Resembling many yellowish species; larger than most; plate tapered very gradually, apical portion short; pygofer truncate; aedeagus distinctive; ventral processes slender and not rugose apically like those of asperus.

SPECIMENS EXAMINED (4) BOLIVIA - Tumupasa <2: USNM). PERU - Hda. Mascoitania (Holotype, allotype: SMNK).

DISTRIBUTION Bolivia, Peru. 94 Osbornellus spiniloba Linnavuori and Heller (Figs. 47-49)

Osbornellus spiniloba Linnavuori and Heller, 1961: 10.

Type locality: Peru.

DESCRIPTION Vertex broad, rounded; median length distinctly less than distance between eyes at posterior margin. Vertex, pronotum and scutellum dark yellow with only few indistinct, slightly darker markings: two rounded spots at rear of vertex near inner mar gins of eyes, irregular spots along anterior margin of pronotum, large spots in basal angles of scutellum. Elytra also yellow, transparent, with dark brown spots at apices of claval suture, c la v a l veins and c o s ta l v e in le ts, two irre g u la r brown spots near midline; tips brownish. Male pygofer about twice as long as greatest width; apical portion short, truncate. Plate (Fig. 49) tapered gradually to short, narrow apical portion. Style usual shape, apical portion long and slender. Aedeagus in ventral view (Fig. 47) narrow at base, widened gradually to wide apical h a lf s p lit in to two ven tra l processes tapered to narrowed tips, separated at base and slightly divergent. In lateral view (Fig. 48) dorsal projection short, narrow, rounded at tip, curved caudad. Main stem curved dorsad, tapered to knobbed tip. Ventral processes slender, ta pered near ends to form sharp apices, straight, directed caudad 93 sharply caudad, point curved back dorsad. Main stem curved dor sad, tapered gradually to knobbed tip. Ventral processes straight, pointed dorso-caudad, rugose on apical half, tapered a t tip . Female unknown. Length 4.5 mm.

TYPE MATERIAL Holotype male - Tag 1: Bolivia: San Esteban. 49 Km. N. Sta. Cruz. 7-XII-59. El. 1120 ft. (DMDC). Paratypes - 3 males same as holotype, 4 males same except X-26-59.’ (DMDC).

RECOGNITION CHARACTERS Many species similar in appearance; genitalia closest to spinellus but pygofer without long spine at apex, ventral pro cesses of aedeagus shorter, wider, of more even width in ventral view.

SPECIMENS EXAMINED (116) BOLIVIA - San Esteban (116 including holotype and 7 para types: DMDC),

DISTRIBUTION B olivia. 92 Osbornellus asperus DeLong and Martinson (Figs. 44-46)

Osbornellus asperus DeLong and Martinson, 1976a: 431.

Type locality: Bolivia.

DESCRIPTION Vertex roundedly angulate; median length slightly less than distance between eyes at posterior margin. Dark yellow with Indistinct rounded brownish spot to each side of coronal suture near inner margin of eye. Pronotum brownish-yellow with band of irregular brown spots and light streaks along anterior margin. Scutellum whitish-yellow with large brown spots in basal angles. Elytra transparent, yellowish. Small dark brown spots at apices of claval suture, claval veins and costal.veinlets. Faint brown streaks a t end of a couple c e lls . Male pygofer about twice as long as greatest width; apical portion rounded on sides to tip. Plate (Fig. 46) with apical portion about as long as basal portion, crenulate on outer mar gin, plumose at tip. Style usual shape, rather angular. Aedea gus in ventral view (Fig. 44) with wide, almost square basal portion. Ventral processes arising at one-fourth total length from base of aedeagus, separated throughout length, wide (to gether slightly narrower than basal portion), rugose on apical halves, tapered to bluntly pointed tips. In lateral view (Fig. 45), dorsal projection thumblike, pointed dorsad then bent 91 TYPE MATERIAL Holotype male - Tag 1: M. F. 5346, Tleotlaxco, Oax. VI- 22-f35. (DMDC). (genitalia of holotype missing).

RECOGNITION CHARACTERS See explanation under cirrhostigmatus.

SPECIMENS EXAMINED (1) MEXICO - Oaxacai Tleotlaxco (Holotype: DMDC).

DISTRIBUTION Mexico. 90 Osbornellus cibus DeLong and Martinson (Fig. 43)

Osbornellus cibus DeLong and Martinson, 1976b: 587.

Type locality: Mexico.

DESCRIPTION Vertex roundedly angulate; median length less than distance between eyes at posterior margin. Dull light yellow with round orange spot (faded posteriorly) to each side of coronal suture halfway to eye. Pronotum light brownish-yellow; whitish band along anterior margin with four large, yellow-brown spots. Scu tellum dull light yellow with narrow, longitudinal orange spot in each basal angle. Elytra transparent, only faintly yellow, with faint brown spot at apex of each claval vein. Plate long and tapering with filamentous apex. Style long and narrow. Aedeagus with d o rsal projection sh o rt, tru n cate. Main stem extending caudally, slightly curved dorsad, tip rounded. Ventral processes stout at base, extended caudad, bent dorsad at half their length, distinctly longer than stem (Fig. 43) (description of genitalia taken largely from DeLong and Martinson, 1976b). Female unknown. Length 4.5 mm. 8 9 round-tipped, pointed dorsad. Ventral processes widely separated from stem at base, bent dorsad just beyond base, tapered at ends to form long, sharp apices. Female unknown. Length 4.5 mm.

TYPE MATERIAL Holotype male - Tag 1: Brazil S. P. Riberao Pires. V-54. N. L. H. Krauss. (USNM).

RECOGNITION CHARACTERS Similar in appearance to cibus but orange markings much b rig h ter and more d is tin c t, brown spots on e ly tra larg e r and darker.

SPECIMENS EXAMINED (1) BRAZIL - Riberao Pires (Holotype: USNM).

DISTRIBUTION B razil. Osbornellus cirrhosticrmatus n. sp. (Figs. 41, 42)

type locality: Brazil.

DESCRIPTION Vertex roundedly angulate; median length slightly less than distance between eyes at posterior margin. Dull light yellow with faint whitish stripe from middle of anterior margin to apex of coronal suture. Bright orange oval spot to each side of coro nal suture near inner margin of eye. Pronotum light yellow- brown; band along an terio r margin w hitish a t middle and ends, dark orange from middle of eyes to inner margins of orange spots on vertex. Scutellum dull light yellow with large dark orange spots in basal angles. Elytra transparent, faintly yellow. Small brown dots at apices of claval suture and claval veins, along costal veinlets and at ends of some cells.- Male pygofer slightly more than 1.5 times as long as greatest width; apical portion rounded on both sides to broadly angled point. Plate usual shape; apical portion long, expanded on mid dle h a lf. Style usual shape. Aedeagus in v en tral view (Fig. 41) with main stem slender, straight, slightly knobbed at end. Ventral processes arising near base of aedeagus, divergent, bent laterad at two-fifths their length, tips curved back caudad, ex tending just beyond stem. In lateral view (Fig. 42), main stem almost straight, slender, pointed dorso-caudad. Dorsal projec tion arising from main stem far from base of aedeagus, short, 87 SPECIMENS EXAMINED (116) CONNECTICUT - East River (Paratype: FSCA). FLORIDA - Alachua Co. (2: FSCA); Columbia Co. : O'Leno St. Pk. (2: FSCA); Highland Co. (10: AMNH); Liberty Co. (3: UMMZ), Plant City (1: KSUC); county undetermined: Ft. Ogden (2: CNCI), G ainesville (3: CNCI) (13: DMDC), New Smyrna (2: HOCI), Sanford (3: DMDC) (1: KSUC) (1: SEMC), Suwanee Springs (9: SEMC), Torreya St. Park (20: CNCI). MARYLAND - Pocomoke (1: FSCA), Salisbury (1: FSCA). MISSISSIPPI - Biloxi (2: HOCI), Fulton (1: HOCI), Meridian (2: HOCI), Natchez (1: HOCI), Ocean Springs (6: HOCI), Ponto toc (1: HOCI), Tupelo (1: HOCI), Wade (1: HOCI), Waynesboro (1: HOCI). OHIO - F a irfie ld Co. (3: HOCI). TENNESSEE - C lark sv ille (2: DMDC). TEXAS - Anderson Co. : Salmon (5: TAMU); Tvler Co. (1: TAMU). VIRGINIA - Vienna (1: FSCA). MEXICO - San Luis Potosi: Tamazunchale (12: DMDC). PANAMA - Chica (1: DMDC).

DISTRIBUTION Mostly southern U. S. and Mexico; also eastern U. S., Panama. 86 Male pygofer s lig h tly more than twice as long as g re a te st width; apical portion narrow, tapered to rounded apex. Plate usual shape, plumose. Style usual shape; apical portion not very sto u t (Fig. 40). Aedeagus in v en tra l view (Fig. 38) narrow, almost parallel-sided on basal half. Ventral processes slender, arising about halfway along total length of aedeagus, divergent from base. In lateral view (Fig. 39), dorsal projection very stout, expanded to blunt tip. Main stem and ventral processes narrow, curved dorsad, only slightly divergent. Posterior margin of female 7th sternite (Fig. 219) almost straight across, only very slightly produced at middle. Length 5-5.5 mm.

TYPE MATERIAL Holotype male - Tuskegee, Ala., July 22, 1930, L. D. T u th ill. (SEMC). Allotype female - same as holotype. (SEMC). Paratypes (72 males, 77 females) - from Tuskegee, Ala.; Lexington, S. C.; Flattsburg, Ga.; Okefenokee Swamp, Ga.; Dismal Swamp, Va.; Iuka, Miss.; Ft. Meade, Fla.; Lake Drummond, Va.; Washington, D. C.; East River, Conn. (SEMI, USNM).

RECOGNITION CHARACTERS Similar to auronitens and limosus: apical portion of style not unusually stout; main stem and ventral processes of aedeagus slender; posterior margin of female 7th sternite without median notch or excavation. 85 Osbornellus rotundus Beamer (Figs. 38-40, 219)

Osbornellus rotundus Beamer, 1937: 93; DeLong and Caldwell 1937: 83; Britton 1938: 24; DeLong 1941a: 179; DeLong and Knull 1946: 32; Oman 1947: 227; Osborn and Knull 1947: 331; DeLong 1948: 204; Oman 1949: 122; Young 1950: 66; F attig 1955: 46; Metcalf 1965: 2193.

Type lo c a lity : Alabama.

DESCRIPTION Vertex angularly produced; median length less than distance between eyes at posterior margin. Light band along anterior margin between ocelli, bordered above and below by dark brown line. Elongate transverse white area behind marginal lines across median two-thirds of vertex, bordered posteriorly for most of length by narrow brown line at apex of coronal suture. Bright orange band across vertex between anterior portions of eyes. Whitish band across posterior portion of vertex. Pronotum mostly yellowish-orange. Anterior margin with bright orange spot at middle, whitish areas with brown spots at sides; two faint, dark orange spots near center of pronotum. Scutellum light, with large orange spots in basal angles. Elytra transparent, light yellow with several whitish patches. Usual brown markings on costa and commissural line and at tips. Few cells with faint elongate brown spots. 84 RECOGNITION CHARACTERS Very similar to auronitens and rotundus: distinguished by tooth on inner margin of stout apical portion of style, aedeagus as described above, and distinctive female 7th sternite.

SPECIMENS EXAMINED (81) LOUISIANA - Covington (li SEMC). MARYLAND - Plummets Island (11: SEMC). NEW JERSEY - Somerville (3 paratypes: DMDC). NORTH CAROLINA - Wilmington <1: DMDC). NORTH DAKOTA - Linton (1: SEMC). OHIO - Hocking Co. (28: HOCI). Licking Co. (2: DMDC). PENNSYLVANIA - Greenfield (Paratype: DMDC), Harrisburg (Paratype: DMDC), Hartstown Bg. (Holotype, allotype, 6 para types: DMDC), North East (Paratype: DMDC), Penns Station (1: DMDC). TENNESSEE - Clarksville (5 paratypes: DMDC). TEXAS - Sequin (2: SEMC). VIRGINIA - Arlington (2: SEMC), Ch. Bridge (2 paratypes: DMDC), Glencarlyn (1: MCZC). CANADA - Manitoba: Winnipeg (2: CNCI); Ontario.: Antrem (4: CNCI), South March (3: CNCI); Quebec: Rigaud (Paratype: DMDC).

DISTRIBUTION Eastern U. S. and Canada. Male genitalia very similar to that of auronitens. lygofer more than twice as long as greatest width, apical portion long and narrow with rounded point. Plate usual shape, plumose. Style usual shape; apical portion stout, with pointed tooth on inner margin near apex (Fig. 37). Aedeagus in ventral view (Fig. 35) wide, expanded only slightly beyond base. Ventral processes arising at one-third total length, not as wide as in auronitens. ends tapered sharply to pointed tips directed outward. In later al view (Fig. 36), dorsal projection long, expanded apically. Main stem and ventral processes slender, separated from base, curved dorsad. Posterior margin of female 7th sternite (Fig. 218) strongly produced to each side, with broad, deep median excavation. Length 5-6 mm. *

TYPE MATERIAL Holotype male - Tag 1: Hartstown Bg., Pa. 8-12-19; Tag 2i D. M. DeLong. (DMDC). Allotype female - same as holotype. (DMDC). Paratypes - 2 males, 4 females from Hartstown Bg., 1 female from North East, 1 female from Greenfield and 1 male from Harrisburg, Pa.; 2 males, 1 female from Somerville, N. J.; 5 females from Clarksville, Tenn.; 2 females from Chain Bridge, Va.; 1 female from Rigaud, Que. (DMDC). 82 Osbornellus limosus DeLong (Figs. 35-37, 218)

Osbornellus limosus DeLong, 1941a: 179; DeLong and Knull 1946: 32; Osborn and Knull 1947: 331; DeLong 1948: 206; Oman 1949: 122; Metcalf 1965: 2190.

type locality: Pennsylvania.

DESCRIPTION Vertex broadly, angularly produced; median length less than distance between eyes at posterior margin. Pale line along an terior margin between ocelli, bordered above and below by dark lines. Long, narrow white area behind marginal lines not reach ing eyes, bordered posteriorly on median half by short, thin brown lin e a t apex of coronal su tu re. Wide orange band across vertex between anterior portions of eyes. White band on poster ior portion of vertex with short brown longitudinal dash at each end along inner margin of eye. Pronotum yellowish with orangish transverse bands along anterior margin and across middle, with bright orange spot at center of anterior margin and two duller orange spots behind, near center. Scutellum light brown down center with large orange spots in basal angles, small white spots along margins. Elytra light, whitish-yellow, with small brown dots at apices of claval suture and claval veins. Thin brown dashes along costal veinlets and some veins. Tips margined with brown. 81 Merivale (Is CNCI), Niagara Glenn (Is CNCI), Queensville (Is CNCI), Rondeau Park (3: CNCI), Ticton (2: CNCI), Tillsonburg (1: CNCI), Trenton (4 including holotype: CNCI), Vineland Station (4: CNCI) (Is SEMC), Walpole Is. (3: CNCI), Watford

(2: CNCI); Quebec : Kirks Ferry (2: CNCI), Lac Mondor (Is CNCI).

DISTRIBUTION Widespread over eastern U. S. and southeastern Canada.

4 8 0 Madison Co. (2: HOCI); Medina Co. (1: HOCI); Morrow Co. (1: HOCI); Muskingum Co. (2: HOCI); Perrv Co. (1: DMDC); Stark Co. (4: KSUC); oountv undetermined: Akron (1: HOCI), Ashtabula (1: HOCI), Bellaire (2: HOCI), Bellefontaine (1: HOCI), Cedar Point (2: HOCI), Cedar Swamp (3: HOCI), G ranville (S: HOCI), L ittle Mt. (3: HOCI), M arietta (1: FSCA) (1: HOCI), N. Kenova (3: HOCI), Oxford (2: HOCI), S treetsboro (2: HOCI), Tiffin (1: DMDC), Toledo (1: FSCA). OKLAHOMA - Sherwood (1: DMDC). PENNSYLVANIA - Enolz (1: DMDC), F t. Loudon (2: DMDC), Greensborough (1: DMDC), Kane (5: DMDC), Loyalsock (1: DMDC), Marysville (2: DMDC), Mt. Holly (2i DMDC), North East (2: DMDC), Ohio Eyie (4: ICCM), Penfield (1: DMDC), Philadelphia (1: FMNH), Pittsburgh (2: ICCM), Pt. Royal (1: DMDC). SOUTH CAROLINA - Aiken (1: CNCI), Florence (1: AMNH). SOUTH DAKOTA - Brookings (3: HOCI). TENNESSEE - C lark sv ille (3: DMDC) (1: OSUO), Elk Valley (1: SEMC), Knoxville (3: DMDC) (1: FSCA). VERMONT - Windsor (1: SEMC). VIRGINIA - Ch. Bridge (4: DMDC), F alls Church (1: MCZC), Norfolk (2: SEMC). WISCONSIN - Amery (7: DMDC), La Crosse (1: DMDC), Madison (1: DMDC), Marshfield (10: DMDC), St. Croix Falls (5: DMDC). CANADA - O ntario: Arkona (3: CNCI), Bothwell (2: CNCI), Carp (4: CNCI), Consecon (2: CNCI), Dunnville (6: CNCI), E lginfield (1: CNCI), Forest (2: CNCI), Marmora (1: CNCI), 79 (2: DMDC), Plummer's I s . (2: MCZC) (4: SEMC). MASSACHUSETTS - Cambridge <1: MCZC). MINNESOTA - Erskine (Is SEMC), Taylor Falls (1: DMDC). MISSISSIPPI - Ackerman (1: FSCA), Leland (Is SEMC). MISSOURI - Neosho (1: HOCI). NEBRASKA - Lincoln (3: HOCI), Omaha (1: DMDC) (2: HOCI). NEW HAMPSHIRE - Mt. Washington (3: AMNH). NEW JERSEY - Middlesex Co. (3: AMNH); countv undetermined: Berkley Hgts. (2: AMNH), Chatham Township (1: AMNH), Ludlow (1: AMNH), Mom Jc. (Is AMNH), Murray H ill (5: AMNH), New Brunswick (1: AMNH), Nutley (3: AMNH), Sandy Hook (Is AMNH), Vineland (1: AMNH), West Norwood (2: AMNH). NEW YORK - Brooklyn (2: AMNH), Flatbush (2: AMNH), Forest H ills (1: AMNH), Gowanda (Is HOCI), Hamburg (9: HOCI), Hempstead (10: AMNH), Huntington (2: AMNH), Ithaca (Is CNCI) (1: SEMC), Jamaica (2: DMDC) (3: HOCI), Kissina PC. (8: AMNH), Maspeth (Is AMNH), McClean (1: SEMC), Mosholu (1: * HOCI), New Rochelle (42: AMNH), Sea C liff (1: AMNH) (2: MCZC), Staten I s . (2: AMNH), West Nyack (1: AMNH). NORTH CAROLINA - Franklin (4: CNCI), Highlands (2: CNCI), Jacksonville (1: USUC), Montreat (1: HOCI), Pisgah Forest (3: CNCI), Walnut (15: SEMC). OHIO - Adams Co. (2: HOCI); Champain Co. (2: HOCI); Delaware Co. (24: HOCI); Fairfield Co. (7: HOCI); Franklin Co. (9: HOCI), Columbus (1: FSCA) (19: HOCI); G allia Co. : Crown City (1: DMDC); Hocking Co. (5: HOCI); Licking Co. (1: DMDC); 78 rotundus: distinguished by stout apical portion of style lacking tooth, ventral processes in ventral view wide, arising halfway along aedeagus, distinctive female 7th sternite.

SPECIMENS EXAMINED (545) ALABAMA - Mobile Co. (1: FMNH). ARKANSAS - Polk Co. (1: SEMC). CONNECTICUT - L itch field (3: AMNH), New Haven (14: SEMC), Storrs (3: SEMC). DELAWARE - locality unspecified (1: AMNH). DISTRICT OF COLUMBIA - Anacostia (9: DMDC), Washington (2: FSCA) (1: HOCI). FLORIDA - Dunedin (1: HOCI), G ainesville (5: HOCI), • Oviedo (3: HOCI), Sanford (31: HOCI). ILLINOIS - Cook Co. (1: HOCI); county undetermined: Beverly Hills (9: FMNH), Chicago (1: DMDC), N. Evanston (1: FMNH), Palos Pk. (4: FMNH), W. Pullman (2: FMNH). INDIANA - Hessville (2: FMNH), Mineral Springs (1: FMNH). IOWA - Ames (1: HOCI). KANSAS - Douglas Co. (24: SEMC) (6: KSUC); Labette Co. (1: SEMC); Pottawatomie Co. (9: KSUC), Rilev Co. (4: KSUC), Washington Co. (1: SEMC). KENTUCKY C rittend en (1: CNCI). LOUISIANA - Cadde Co. (2: SEMC). MAINE - Cape Cottage (1: HOCI). MARYLAND - Ashton (1: FSCA) (6: OSUO), Chevy Chase Lake 77 Male pygofer (Fig. 33) about twice as long as greatest width, apical portion long and narrow with rounded point. Plate and style usual shape except apical portion of style stouter than usual and lacking tooth (Fig. 34). Aedeagus in v en tra l view (Fig. 31) gradually widened from narrow base. Ventral processes arising about halfway along aedeagus, wide for most of their lengths, tapered sharply near ends to form pointed apices direct ed laterad. In lateral view (Fig. 32), dorsal projection stout, expanded toward blunt tip. Main stem curved gently caudad. Ventral processes also curved dorsad, slightly separated from stem, tips turned slightly caudad. Posterior margin of female 7th sternite (Fig. 217) with very deep median notch, sometimes reaching almost to base, and roundedly pointed peak to each side. Length 5.6 mm.

TYPE MATERIAL I*was unable to find a listing of types. Provancher!s description, quoted in Beamer 1937, does not mention types. Metcalf 1965 gives the type locality as "Quebec." The only type that I could locate was labeled "metatype," with the following inform ation - Tag 1: Light; Tag 2: Trenton, Ont., Can. 21- V III-02. Evans; Tag 3: METATYPE S. auronitens compared by W. Downes. (CNCI),

RECOGNITION CHARACTERS Closely resembling several species, especially limosus and a 76 DeLong 1939: 35, 1941a: 179, 1941b: 264; DeLong and Knull 1941: 178; Padley 1941: 393; Medler 1943: 54; Moore 1944: 43; DeLong and Knull 1946: 31; Procter 1946: 90; Evans 1947: 244; Osborn and Knull 1947: 331; DeLong 1948: 204; Hoffmann, Townes, Swift and S a ile r 1949: 19; Oman 1949: 121; Moore 1950a: 260,. 1950b: 35; Young 1950: 66; Shelford 1951: 189; Fattig 1955: 46; Metcalf 1965: 2182.

Type lo c a lity : Quebec, Canada.

DESCRIPTION Vertex angularly produced, median length less than distance between eyes at posterior margin. Three parallel lines along anterior margin - middle one, between ocelli, pale, other two dark brown. Long narrow white area behind marginal lines not reaching eyes, bordered posteriorly on median half by thin brown line. Wide orange band across vertex between anterior portions of eyes. White band along p o sterio r margin, with few brown dots along anterior edge. Pronotum with whitish band along anterior margin, marked by large orange spot a t center and th ree brown dashes to each side; rest yellowish, with two large orange dots near center. Scutellum whitish with broad, light brown band down center, large orange spots in basal angles, a few brown dots along edges of these markings. Elytra transparent, yellowish. Brown dots at apices of claval suture and daval veins, brown dashes on costal veinlets and along short portions of some veins. Tips margined in brown. 75 Osbornellus auronitens (Provancher) (Figs. 31-34, 217)

Scaphoideus auronitens Provancher, 1889: 276; Van Duzee 1894a: 301, 1894b: 199, 1894c: 210; Osborn and B all 1897: 232; Smith 1899: 90; Osborn 1900a: 194, 1900b: 68, 1900c: 11; Smith 1900: 96; Wirtner 1904: 224; Osborn 1905a: 524, 1905b: 524; Fletcher and Gibson 1907: 103; Moore 1907: 190; Van Duzee 1909b: 383; Smith 1910: 105; Crumb 1911: 234; Osborn 1911: 254; Van Duzee 1912: 328; Metcalf 1913: 107; Shelford 1913: 239; Barber 1914: 534; Metcalf 1915: 55; Osborn 1915: 115; DeLong 1916: 56; Van Duzee 1916: 69; Lathrop 1917: 124; Sanders and DeLong 1917: 83; Van Duzee 1917a: 630; Lathrop 1919: 66; Barber 1920: 148; Britton 1920: 49; Dozier 1920: 360; Lawson 1922: 333; Osborn 1922: 38; DeLong 1923a: 261, 1923b: 96, 1923c: 365; Olsen 1923: 173; Osborn 1923: 40; Buys 1924: 49; Weese 1924: 377; Blake 1926: 95; Stearns 1927: 11; Leonard 1928: 164; Osborn 1928: 256; Lawson 1929: 41; Howe 1930: 326; Johnson 1930: 34; Lawson 1930: 38; Lowry 1933: 63; Osborn 1935: 150; Shelford 1937: 239; Brimley 1938: 93; Procter 1938: 78; Padley 1941: 394; Metcalf 1965: 2180. Osbornellus auronitens (Provancher). Ball 1932: 14, 1936: 18; Beamer 1937: 92; DeLong and Caldwell 1937: 23; Oman 1938: 369; Stearns and MacCreary 1938: 227; Brown 1939: 665; 74 SPECIMENS EXAMINED (2) COSTA RICA - San Pedro de Montes de Oca (Holotype: USNM). MEXICO - Chiapas (1: DMDC).

DISTRIBUTION Mexico to Costa Rica. 73 narrow* very narrow on basal one-fourth, middle portion slightly wider, narrower again below tip. Ventral processes arising at one-third total length from base, appressed for most of length, slightly divergent at tips. In lateral view (Fig, 30), dorsal projection short, rounded apically. Main stem pointed straight caudad on basal half, apical half curved abruptly dorsad. Ven tral processes close and parallel to stem except near tips. Posterior margin of female 7th sternite sharply, triangu larly produced at middle. Length 5-5.5 mm.

TYPE MATERIAL Holotype male - Tag 1: San Pedro de Montes de Oca, C. R. 2438. VI-12-36. C. H. Ballou; Tag 2: on Anona cherimola. (USNM), Allotype female - Tag 1: Limon, Costa Rica. IX-X, 1923. Nevermann. (UHCI). Pdratypes - 1 same as holotype (RLCI); 1 from Waldecke, Costa Rica (USNM); 1 from La Ceiba, Honduras (USNM).

RECOGNITION CHARACTERS Similar to auronitens in appearance; markings on vertex very bright and distinct; genitalia similar to puniceus but aedeagus narrower in ventral view, especially at base, main stem turned abruptly caudad at half its length instead of gradually curved from base and ventral processes close to stem except at tips in stead of distinctly separate from base. 72 Osbornellus anonae Linnavuori (Figs. 29, 30)

Osbornellus anonae Linnavuori, 1959: 215.

Type locality: Costa Rica.

DESCRIPTION Vertex roundedly angulate; median length less than distance between eyes at posterior margin. White band along anterior margin between ocelli, bordered above and below by very dark brown bands. Narrow white area across median h alf of vertex be hind marginal lines bordered posteriorly by thin brown line at apex of coronal suture. Broad, bright‘orange band across vertex between anterior portions of eyes. White band along posterior margin with few fa in t brown dots on an te rio r edge, short longi tudinal brown lin e at each end. Pronotum lig h t yellow with orange band along anterior margin including bright orange dot at center,* and dull orange band above posterior margin interrupted at center by light, longitudinal stripe. Scutellum dull yellow with large orangish spots in basal angles, small white spots at tips of basal angles and halfway along lateral, margins. Elytra transparent, yellowish, with some white patches and usual brown dots along costa and commissural lin e ; tip s marked with brown. Male pygofer less than twice as long as wide, pointed apically. Apical portion of plate rather wide, plumose. Style usual shape. Aedeagus in ventral view (Fig. 29) generally 71 Posterior margin of female 7th sternite strongly produced at middle, concave on sides to form broad, truncate median tooth, slightly indented at tip. Length 5.5 mm.

TYPE MATERIAL Holotype male - Tag 1: Finca Vergel, Chiapas, Mex. V-28- 35; Tag 2: A. Dampf, Collr. (DMDC). (genitalia of holotype m issing). Allotype female - Tag 1: Finca Vergel, Chiapas. V-17-35. M. F. 4153; Tag 2: A. Dampf. (DMDC).

RECOGNITION CHARACTERS Similar in appearance to auronitens: aedeagus unusual in lacking ventral processes, distinguished from parallelus by slenderness, gradual tapering, tip not turned caudad.

SPECIMENS EXAMINED (2) MEXICO - Chiapas: Finca Vergel (Holotype, allotype: DMDC).

DISTRIBUTION Mexico. Osbornellus rurrens DeLong (Fig. 28)

Osbornellus rurrens DeLona. 1941b: 265; Metcalf 1965: 2193,

Type lo c a lity : Mexico.

DESCRIPTION Vertex roundedly angled; median length slightly less than distance between eyes at posterior margin. Pale band along an terior margin between ocelli, dark band above and below. White area behind marginal lines short, ending far from eyes. Brown line at apex of coronal suture short. Bright orange band across vertex between anterior portions of eyes, white band along pos terior margin. Pronotum light yellow with darker band along anterior margin with bright orange dot at center, orangish band across middle with two darker dots near center. Scutellum white with yellow-brown band down center, dull orange spots in basal angles; Elytra transparent, light yellow with some white patches. Veins dark yellow. Tips brown. Usual brown spots along costa and commissural line. Male pygofer about twice as long as greatest width. Plate and s ty le usual shape. Aedeagus in la te r a l view (Fig. 28) with dorsal projection short, tip expanded and truncate. Main stem narrow, tapered gradually to sharp tip, curved dorsad. No ven tral processes. shorter than, stem. Female unknown. Length 5 mm.

TYPE MATERIAL Holotype male - Tag 1: Fort Davis, Panama C. Z. 28-VIII- 1952; Tag 2: F. S. Blanton, C ollector. (USNM).

RECOGNITION CHARACTERS Very similar to auronitens in appearance; slightly smaller ventral processes of aedeagus contiguous to each other and to main stem from base to tip; apical portion of plate wider than usual; apical portion of style narrower than usual.

SPECIMENS EXAMINED (1). PANAMA - Canal Zone: Fort Davis (Holotype: USNM),

DISTRIBUTION Panama. Osbornellus hellus n. sp. (Figs. 25-27)

type locality: Panama.

DESCRIPTION Vertex angularly produced; median length about equal to width between eyes at posterior margin. Pale line along anter ior margin between ocelli, dark brown line above and below. White area behind marginal lines not quite reaching eyes. Brown line at apex of coronal suture short. Orange band across vertex between anterior portions of eyes, white band along posterior margin. Pronotum yellowish with orangish band along a n te rio r margin with bright orange spot at center, orange transverse band halfway back with two darker spots near center. Scutellum yel lowish with large orangish spots in basal angles. Elytra trans parent, yellowish. Veins light. Usual brown spots along costa and commissural line. Tips brown. * Male pygofer less than two times as long as wide; apical portion concave on dorsal margin, convex on ventral margin, point' rounded. Apical portion of plate broader than usual, plumose. Apical portion of sty le (Fig. 27) very narrow. Aedeagus in ven tral view (Fig. 25) straight, narrow. Ventral processes arising at three-fifths total length, shorter than main stem, appressed to tips. In lateral view (Fig. 26), dorsal projection short, truncate. Main stem and ventral processes appressed, curved gently dorsad. Ventral processes arising above base of, and DISTRIBUTION Mexico to Panama* 66 ventral view (Fig. 21) narrow; ventral processes slightly diver gent, apparently arising near apex of main stem. In lateral view (Fig. 22), dorsal projection wide, tip expanded and truncate. Main stem curved dorsad, ventral processes apparently arising at one-half its length. Posterior margin of female 7th stem ite almost flat, pro duced at middle to form short, broad tooth, slightly indented at tip . Length 6 mm.

TYPE MATERIAL Holotype male - Tag 1: Finca Vergel, Chiapas. V-16-35. M. F. 4191; Tag 2: A. Dampf. (DMDC). Allotype female - same except M. F. 4182.. (DMDC). Paratypes - 11 males, 16 females from Finca Vergel, Chiapas. (DMDC).

RECOGNITION CHARACTERS Strongly resembling auronitens: vertex more pointed; projec tion near tip of pygofer distinctive; ventral processes unusual in arising far from base of aedeagus.

SPECIMENS EXAMINED (39) MEXICO - Chiapas: Esmerelda (1: DMDC), Finca Prusia (1: ICCM), Finca Vergel (Holotype, allotype, 27 paratypes: DMDC); Veracruz: Monte Alto (1: DMDC); state unspecified (3: DMDC). PANAMA - Bombita (3: DMDC). 65 Osbornellus tripartitus DeLong (Figs. 21-24, 216)

Osbornellus tripartitus DeLong, 1941b: 265; Metcalf 1965: 2197.

type lo c a lity : Mexico.

DESCRIPTION Vertex strongly, angularly produced; median length slightly less than distance between eyes at posterior margin. Markings very similar to previous two descriptions. One pale and two dark brown lines along anterior margin. White area behind marginal lines narrow, not quite reaching eyes. Thin brown line across middle half of vertex at tip of coronal suture. Orange band across vertex between anterior portions of eyes. White band across p o sterio r p o rtio n . Pronotum lig h t with orangish band along anterior margin, including bright orange spot at center, and faint orangish band across middle, with two darker orange spots near center. Scutellum whitish, light yellow band down center, large orange spots in basal angles. Elytra transparent, yellowish with some milky patches; tips dark brown. Usual brown spots along costa and commissural line. Male pygofer (Fig. 23) about 1.5 times as long as greatest width; apical portion sharply tapered to rounded point, dorsal margin with short projection near apex pointed dorsad, Plate with very long, plumose apical portion. Style usual shape; tip of apical portion tru n cate, expanded la te r a lly . Aedeagus in 64 SPECIMENS EXAMINED (221) COSTA RICA - San Pedro de Montes de Oca (1: USNM), EL SALVADOR - San Salvador (2: DMDC). MEXICO - Chiapas: Esmerelda (1: DMDC), Finca Belem (1: DMDC), Finca Vergel (199 including holotype, allotype, 112 para types: DMDC), La Prusia (1: DMDC); Puebla: Zacatepec (1: DMDC); San Luis Potosi: Finca Victoria (2: DMDC), Tamazunchale (4: DMDC); Tabasco: Pocvicuc. (1: DMDC); Veracruz: Fortin (1: DMDC), Xico (1: DMDC); state unspecified (6: DMDC).

DISTRIBUTION Mexico to Costa Rica.

« apical portion quite narrow. Aedeagus in ven tral view (Fig. 18) slender, narrow just above base, expanded slightly along middle, narrowed again below tip. Ventral processes arising at half total length, appressed for most of length, slightly divergent at tip s . Aedeagus in la te r a l view (Fig. 19) with sh o rt, blunt dor sal projection. Main stem curved dorsad, with blunt tip. Ven tral processes straighten, apical thirds tilted dorsad, apices sharp. Posterior margin of female 7th sternite rounded at sides, produced at middle to form short, blunt-pointed tooth, very slightly concave at tip. Length 5.5 mm.

TYPE MATERIAL Holotype male - Tag 1: Finca Vergel, Chiapas. 5-21-35. M. F. 4245. (DMDC). Allotype female - Tag 1: Finca Vergel, Chiapas, Mexico. V- 28-35; ‘Tag 2: A. Dampf, C o llr. (DMDC). Paratypes - 72 males, 40 females from Vergel, Chiapas. (DMDC).

RECOGNITION CHARACTERS Very similar to auronitens in appearance; vertex more angu larly produced; genitalia discernible from those of others in auronitens group. 62 Osbornellus puniceus DeLong (Figs. 18-20)

Osbornellus punioeus DeLoncr. 1941b: 264, Metcalf 1965: 2192.

type locality: Mexico.

DESCRIPTION Vertex strongly, angularly produced; median length slightly less than distance between eyes at posterior margin. Anterior margin marked by lig h t band between o c e lli, dark band above and below. White area behind marginal lines shorter than that of querreroensis. bordered posteriorly by brown line across median half of vertex. Orange band across middle third of vertex, white band along posterior margin separated by irregular brown line. Irre g u la r brown lin es on each side of an terio r h alf of coronal suture. Pronotum orangish-yellow; a n te rio r margin lig h te r, with bright orange spot at middle. Scutellum same color, with large, darker*spots in basal angles, white spots at tips of basal an gles and halfway along lateral margins. Elytra transparent, yel lowish; tips marked with dark brown. Usual brown spots along costa and commissural line. Outer anteapical cell shorter than u su al. Male pygofer slightly less than twice as long as greatest width; apical portion rounded at sides, tapered to rounded point. Plate (Fig. 20) with apical portion quite wide, more them three times as long as basal portion, plumose. Style usual shape, paratypes; DMDC)

DISTRIBUTION Mexico. 60 ventral view (Fig. 15), slightly expanded laterally to just over half its length, then sharply curved inward. Ventral processes arising at about one-third total length from base, narrowly separated near base, then contiguous just below slightly diver gent tips. In lateral view (Fig. 16), dorsal projection short, narrow; main stem p a ralle l-sid e d and almost s tra ig h t, curved dor sad just at tip. Ventral processes slightly narrower than stem, apical two-fifths tilted dorsad. Posterior margin of female 7th sternite (Fig. 215) rounded to sides, concave on middle third with short, broad median tooth, slightly indented at tip. Length of male 5.5 mm.; female 6.0 mm.

%*■ * TYPE MATERIAL Holotype male - Tag 1: Mazaclan, Gro. 10-3-45; Tag 2: Balock, DeLong, Hershberger. (DMDC). Allotype female - same as holotype. (DMDC)'. Paratypes - 2 males, 4 females same as holotype. (DMDC).

RECOGNITION CHARACTERS Very close to auronitens in appearance; vertex appearing broader than most in auronitens group; straightness of main stem of aedeagus in lateral view unusual; female 7th sternite dis tin c tiv e .

SPECIMENS EXAMINED (8) ' MEXICO - Guerrero; Mazaclan (Holotype, allotype, 6 59 Osbornellus querreroensis n. sp. (Figs. 15-17, 215)

Type lo c a lity : Mexico.

DESCRIPTION Vertex very broadly angulate, median length less than dis tance between eyes at posterior margin. Light line along anter ior margin including ocelli, bordered above and below by dark brown line. Long, narrow white area behind marginal lines, not quite reaching eyes, bordered posteriorly by slightly shorter brown line. Orange band across middle third of vertex, whitish band across basal th ird . Pronotum w ith orangish band along an terior margin with bright orange spot at middle, light band be hind, orangish band across middle with two darker orange spots near center, light band along posterior margin. Scutellum yellow-brown down middle, large orange spots in basal angles surrounded by white. Elytra transparent, whitish; veins brown. Many cells with longitudinal brown patches. Usual brown spots along commissural line. Several costal veinlets and tips of ely tra heavily marked with dark brown. Female s lig h tly longer and more robust than male. Male pygofer (Fig. 17) slightly less than twice as long as greatest width; apical portion tapered to rounded point, ventral- apical margin folded inward. Plate tapered to narrow, plumose apical halves. Style boomerang-shaped, basal and apical portions ra th e r s tra ig h t, rounded a t ends, Aedeagus ra th e r wide in 5 8 tapered gradually to apex. In lateral view (Fig. 12), dorsal projection rounded at tip; main stem tapered gradually to tip, curved dorsad then caudad at tip; no ventral processes. Female unknown. Length 5.5 mm.

TYPE MATERIAL Holotype male - Tag 1: Huachuca M., Ar. IX-9-38; Tag 2: D. d. £ d. N. Knull, C o llrs. (DMDC).

RECOGNITION CHARACTERS Resembling auronitens in shape and size, but with general yellowish color; aedeagus very unusual in lacking ventral pro cesses, long and narrow shape in ventral view.

SPECIMENS EXAMINED (2) ARIZONA - Chiricahua Mts. (1: HOCI), Huachuca Mts. (Holo type: DMDC).

DISTRIBUTION Arizona. 57 Osbornellus parallelus DeLong and Knull (Figs. 11-14)

Osbornellus parallelus DeLong and Knull, 1941: 178, 1946: 32; Oman 1949: 122; Metcalf 196S: 2191.

Type locality: Arizona.

DESCRIPTION Vertex angulate, median length slightly less than distance between eyes at posterior margin. Light band along anterior mar gin connecting ocelli, bordered above and below by dark brown lines. Long, narrow transverse whitish spot back of marginal lines, bordered posteriorly by curved brown line across median half of vertex. Wide dark yellow band between anterior portions of eyes, narrower w hitish band along p o sterio r margin. Pronotum yellowish-brown; anterior margin with band of light and dark spots, orangish spot at middle. Scutellum yellowish-brown with slightly darker, large spots in basal angles. Elytra trans parent, light yellow-brown; veins only slightly darker except at tips of elytra. Brown spots at apices of claval suture, claval veins and c o sta l v e in le ts. Male pygofer (Fig. 13) slightly less than twice as long as greatest width; apical portion tapered slightly to short, broad, blunt tip. Plate (Fig. 14) tapered only slightly on broad basal half; apical portion rather wide, very plumose. Style usual shape. Aedeagus in ven tral view (Fig. 11) very long and narrow, 56 most of their length, basal halves wide, tapered to narrow apical portions, slightly divergent at tips (Fig. 8). In lateral view (Fig. 9), long, straight dorsal projection just beyond base; stem arising near tip of projection and curved dorsad to blunt tip; ventral processes pointed straight caudad, forming almost right angle with dorsal projection, expanded apically then tapered to sharp tips curved slightly dorsad. Female unknown. Length 6.5 mm.

TYPE MATERIAL Holotype male - Tag 1: Mex. Chis. 8 mi. NE San Cristobal. 10-V-69. 7500'. H. J. Teckey; Tag 2: lOOw. U.V. Light trap. (CNCI). Paratype - 1 male from Zontehuitz, Chiapas, Mexico. (CNCI).

RECOGNITION CHARACTERS Large; markings on vertex differing from other species in auronitens group; aedeagus distinctive, especially in lateral view.

SPECIMENS EXAMINED (2) MEXICO - Chiapas; San Cristobal (Holotype: CNCI), Zontehuitz (Paratype: CNCI).

DISTRIBUTION Mexico. • 55 Osbornellus macmus n. sp. (Figs. 8-10)

Type lo c a lity : Mexico.

DESCRIPTION Vertex sharply angulate, median length less than distance between eyes at posterior margin. Whitish band along anterior margin between, but not quite reaching, ocelli, bordered on both sides by dark brown lines, posterior band interrupted at middle by anterior extension of white triangular spot just behind apex, bordered p o sterio rly by dark brown lin e . Dull orangish band across vertex between anterior portions of eyes. Whitish band along posterior margin, with brown longitudinal lines at ends along inner margins of eyes. Pronotum yellow-brown, white band with brown spots along anterior margin. Scutellum light, with broad yellowish median band and orangish spots in basal angles. E lytra tran sp aren t, lig h t, veins brown; brown spots a t ends of claval suture, claval veins and costal veinlets. Tips brown. Several cells with longitudinal brown patches. Outer anteapical cell almost pointed at ends. Male pygofer more than twice as long as g re atest width; api cal portion slightly rounded laterally, tapered to blunt point. Apical portion of plate wider than usual, expanded slightly on apical half, plumose (Fig. 10). Style usual shape, apical por tio n d is tin c tly sh o rter than basal portion. Aedeagus in v en tra l view wide; ventral processes arising near base, appressed for 5 4 EL SALVADOR - Puerto La Libertad (7: DMDC), San Miguel (4: DMDC), San Salvador (2: USNM), Santa Tecla (1: USNM), San Vicento (1: DMDC), Tonacatepeque (3: USNM). GUATEMALA - Depto. E scuintla (3: USNM), San Marco (1: DMDC), Sta. Lucia & Patulul (8: DMDC), Yepocapa (1: USNM). HONDURAS - La Ceiba (1: USNM), Rancho Chiquita Comayagua <25: DMDC). MEXICO - Chiapas: Finca Aurora (4: DMDC), Finca Esperanza (1: DMDC), Finca Vergel (11: DMDC), Mont Grande (1: DMDC), locality unspecified (1: DMDC); Guerrero: Acapulco (2: DMDC), Iguala (2: DMDC), Marquelia (1: TAMU); Morelos: Antiguo (1: CNCI); Nuevo Leon: Linares (1: TAMU); Oaxaca: El Cameron (2: TAMU), Tehuantepec (1: TAMU); Quintana Roo: Allen Pt. (6: USNM), Petacab (1: DMDC); San Luis Potosi: Naranjo (1: TAMU), Tamazunchale (11: DMDC), Valles (1: DMDC) (1: USNM); Tabasco: Pocvicuc. (2: DMDC), Zapata (1: DMDC); Tamaulipas: Ciudad Victoria (2: USNM); state unspecified (3: DMDC),

* PANAMA - David (2: USNM), El Cris (3: USNM), El Retiro (1: USNM), Espino (2: USNM), La Yeguada (6: USNM), Nueva Gorgona (1: USNM), Penonome (1: USNM), Pese (1: USNM), Rio Hato (1: USNM), Rio Las Lajas (2: USNM), Salado (3: USNM), locality unspecified (3: USNM).

DISTRIBUTION Mexico to Panama. 53 Osbornellus fulvomaculatus unilineatus Linnavuori

Osbornellus blantoni unilineatus Linnavuori. 1959: 216.

type locality: Costa Rica.

DESCRIPTION Resembling nominate form but darker brown. Markings on ver tex much more indistinct, just irregular dark brown spots on each side of coronal su tu re. Pronotum brown, with lig h t and dark spots along an terio r margin. Scutellum lig h t brown, with large rounded brown spots in basal angles. Elytra light brown, same brown spots along costa and commissural line, faint elongate brown patches in some cells. Male genitalia and female 7th sternite same as nominate form.

TYPE MATERIAL Holotype male - Tag 1: Farm La Caja (Costa Rica), 8 km. westl. S. Jose, 15.4-20.6 1924. (UHCI). Allotype female (here designated) - Tag 1: PANAMA La Yeguada, 21 x 52; Tag 2: C oll. F. S. Blanton. (USNM),

RECOGNITION CHARACTERS Resembling nominate form but darker, markings much more indistinct.

SPECIMENS EXAMINED (136) COSTA RICA - San Jose (Holotype: UHCI). 52 (li DMDC), Tamazunchale (2: DMDC); Tabasco: Pocvicuc. (1: DMDC), Reforma (3 including holotype of la c u n isi DMDC); Veracruz: Cord el (1: DMDC), La Forestal (1: DMDC); state unspecified (19 including 2 paratypes of lacunis; DMDC). PANAMA - Aguadulce (2: USNM), A rraijan (5: USNM), Barro Colorado Is . (1: USNM), Camarron (1: USNM), Chepo (1: USNM), Gorgona (17: USNM), Juan Diaz (3: USNM), La Jolla (Holotype and allotype of b la n to n i: USNM), Las Cumbres ,(2: DMDC), La Yeguada (2: ' USNM), Los'Cruces (6: USNM), Los Pozos (1: USNM), Patino (28: USNM), Rio Esteban (1: USNM), Rio Hato (4: USNM), Rio S ajalises (2: USNM), Sabanas (1: USNM), Tocumen (1: USNM); Canal Zone: F t. Kobbe (2: USNM), Madden Dam (12: USNM), Mpjinga Swamp (2: USNM), locality unspecified (3: USNM).

DISTRIBUTION Texas through Mexico and Central America to Colombia. 51 TYPE MATERIAL Holotype male - Tag 1: Minca, Colombia. Acc. No. 1999; Tag 2: May, 1898. (ICCM). Allotype female - Tag 1: La J o lla , Panama. 23-IV-1952; Tag 2: F. S. Blanton, Collector. (USNM).

RECOGNITION CHARACTERS Similar in appearance to auronitens and related species, but smaller, vertex not strongly angulate, markings on vertex duller and somewhat less d is tin c t; sclero tized sp ira ls in ap ica l por tions of ventral processes of aedeagus distinctive.

SPECIMENS EXAMINED (262) TEXAS - Hidalgo Co. (2: HOCJ). BRITISH HONDURAS - El Cayo (1: USNM). COLOMBIA - Minca (Holotype: ICCM). EL SALVADOR - San Salvador (1: DMDC). GUATEMALA - Depto. Escuintla (6: USNM), Lake Peten (3: DMDC), Plancha Piedra (1: DMDC), San Miguel (1: DMDC). HONDURAS - Ruinas de Copan (1: UMMZ). MEXICO - Chiapas: Esmerelda (1: DMDC), Finca Aurora (2: DMDC), Finca Esperanza (1: UMMZ), Finca Maravillas (1: DMDC), Finca Vergel (98: DMDC), Hacienda de Santa Engracia (1: DMDC), Santa Ana (1: DMDC), S. Antonio Nex. (1: DMDC); Guerrero: A rcelia (1: DMDC), Iguala (2: DMDC), Santo Tomas (1: DMDC), Xaltiangus (1: DMDC); Morelos: Cuantla (1: DMDC); Quintana Roo: Cozumel I s . (5: USNM); San Luis P otosi: Finca V icto ria 5 0 Pronotum with orange spot along middle of an terio r margin, two rounded orange spots near middle posteriorly} rest light yellow- brown, irre g u la rly marked with white and dark brown along an ter ior margin. Scutellum with large orange spots in basal angles, median light yellow-brown longitudinal band, all bordered with light brown; rest white. Elytra transparent, yellow-brown. Several milky patches on clavus. Veins and spots at apices of claval suture, claval veins and costal veinlets brown. Male pygofer less than twice as long as greatest width, api cal portion rounded to blunt point. Plate tapered sharply, api cal half narrow and plumose. Style usual shape (Fig. 7). Aedeagus in ventral view (Fig. 5) narrow, expanded slightly just above base, ventral processes divergent at about one-half total length. In lateral view (Fig. 6), base long and narrow, dorsal projection at one-third total length pointed caudad. Pair of ventral processes arising near base of stem curved dorsad, longer than stem, with sclerotized spirals in apical two-thirds. Female 7th sternite (Fig. 214) short, much wider than long; posterior margin sinuate, slightly produced on median half. Length 3.7-4.2 mm. The types of Osbornellus blantoni Linnavuori and Osbornellus lacunis DeLong and Martinson have been examined by the author and determined to be synonymous with fulvomaculatus fulvomaculatus (Osborn). SPECIES TREATMENT

Osbornellus fulvomaculatus fulvomaculatus (Osborn) (Figs. 5-7, 214)

Scaphoideus fulvomaculatus Osborn. 1923: 39. Osbornellus fulvomaculatus (Osborn). Oman 1938: 369; Linnavuori 1959: 216; Metcalf 1965: 2189. Osbornellus blantoni Linnavuori. 1959: 216. (Type locality: Panama). NEW SYNONYMY. Osbornellus lacunis DeLong and Martinson, 1976b: 596. (Type lo c a lity : Mexico). NEW SYNONYMY.

* Type locality: Colombia.

DESCRIPTION Vertex angulate, median length about equal to distance be tween eyes a t p o sterio r margin. Narrow band along an te rio r mar gin between ocelli whitish, bordered above and below by narrow, dark brown bands. Broadly tria n g u la r w hitish spot behind mar ginal lines at center, slightly extended at middle into brown band anterior to it. Dull orange transverse band between anter ior portions of eyes, bordered anteriorly and toward ends pos teriorly by light brown lines. Basal one-third whitish.

49 48 multivittatus (p. 316) 47 scutellum largely bright orange; elytra heavily flecked with dark brown...... oroous (p. 302) 90'. Median length of vertex about as great as distance between eyes at posterior margin; vertex, pronotum and scutellum largely tawny; elytra not heavily flecked with brown...... 91

91 (90’ )* Narrow, irre g u la r white band along p o sterio r mar gin of vertex; elongate orangish spot along middle of anterior margin of pronotum, whitish band across front of pronotum behind orange spot; veins of elytra marked with brown...... fasciatus (p. 305) 91'. Not fitting above description.;...... 92

92 <91'). Elytra very light, only brown marks three small dots on commissural lin e and th re e short brown dashes on costa; aedeagus with only dorsal projection and main stem, no other processes (Fig. 207)...... crilvus (p. 308) 92*. Elytra with more brown; aedeagus with at least one process (Figs. 209, 211, 213)...... 93

93 (921). Aedeagus with main stem curved gently dorsad, bearing pair of ventral processes (Figs. 209, 211)...... bimarcrinatus (p. 311) 93'. Main stem of aedeagus curved sharply dorsad; single process on dorsal side of stem, shorter than stem; stem and dorsal process parallel and appressed (Fig. 213)... lateral view ending in long, narrow, sharp tip (Fig. 193)...... mexicanus (p. 286) 87*. Pale dashes on anterior margin of vertex longer, even ly curved; ely tra darker, reddish, heavily marked with brown; main stem of aedeagus in lateral view ending in short, blunt point (Fig. 194)...... infuscatus (p. 290)

88 (86’ ). White markings on v ertex, pronotum and scutellum very distinct; posterior portion of pronotum light, whitish-yellow; elytra whitish, marked with brown; main stem of aedeagus in la te ra l view expanded on ap ical one-fourth to form broad, rounded tip (Fig. 196)...... alveus (p. 293) 88*. Not fitting above description...... 89

89 (88*). Wide pale longitudinal band down middle of scu tellum; dark markings on vertex and pronotum reddish- brown; main stem of aedeagus in ventral view wide at base, tapered gradually to sharp apex (F ig. 197)...... sinuatus (p. 296) 89*. Scutellum marked with brown along middle; dark mark ings on vertex and pronotum dark brown, not reddish; main stem of aedeagus in ventral view very narrow from base to apex (Fig. 199)...... anoustatus (p. 299)

90 (l1). Median length of vertex about as great as distance between eyes at posterior margin; vertex, pronotum and 45 83 (82f). Wide white longitudinal band down middle of scu tellum ; scutellum and e ly tra heavily marked with dark brown...... leucostiomatus (p. 271) 83T. Not fitting above description...... 84

84 (83*). Markings of vertex rather indistinct and ill- defin ed...... pallidus (p. 274) 84f. Markings of vertex sharply defined...... 85

85 (84f)« White cross-bar of "T-shaped mark on vertex wide and distinct; distinct white longitudinal dashes along inner margins of eyes; ventral processes and main stem of aedeagus not parallel apically in lateral view (Fig. 189) ...... clarus (p. 278) 851. Cross-bar of nT”-shaped mark on vertex and dashes along inner margins of eyes not so wide and distinct; apical halves of main stem and ventral processes of aedeagus parallel and very close in lateral view (Fig. 191) flexuosus (p. 283)

86 (7 1 '). General yellowish co lo r; brown markings on vertex rather light...... 87 86f. Not yellowish; brown markings on vertex sharp, darker...... 88

87 (86). Pale dashes on anterior margin of vertex short, irregularly curved; elytra pale tawny, with few light brown and whitish spots; main stem of aedeagus in 44 79 (78). General yellow ish color; brown on vertex lig h t and not very heavy; apex of main stem of aedeagus pointed in lateral view (Fig. 175),,,,...... rarus (p. 257) 791. Not generally yellow; brown on vertex dark and heavy; apex of main stem of aedeagus rounded in lateral view (Figs. 177, 179) ...... 80

80 (791)* Area between "T^-shaped mark and pale spots just to inside of ocelli bright orange; tips of ventral pro cesses of aedeagus in lateral view turned caudad just below expanded tip of main stem (Fig. 177)...... rubellus (p. 260) 80*. Area between I,T,l-shaped mark and pale spots just to insid e of o c e lli dark brown; tip s of v en tra l processes of aedeagus straight in lateral view, ending far below expanded tip of main stem (Fig. 179)...... omani (p. 263)

81 (781). General color yellow; median length of vertex distinctly shorter than distance between eyes at posterior margin; ventral processes of aedeagus widely separated from main stem at base in lateral view (Fig. 181) unus (p. 266) 81f. Not fitting above description...... 82

82 (81f). Vertex dark, reddish-brown; small triangular spot behind apex surrounded by dark brown stigmatus (p. 268) 821. Not fitting above description...... 83 43 75 (74). Triangular spot behind apex of vertex rather nar row; brown bar at apex of coronal suture short, not unusually heavy; dorsal projection of aedeagus curved caudad (Fig. 166)...... sca la ris (p. 244) 75f. Triangular spot behind apex of vertex wide; brown bar at apex of coronal suture very heavy; dorsal projec tion of aedeagus straight (Figs. 168, 170) ...... 76

76 (751). Large, irregular orange area on each side of ** coronal suture between o c e lli and "T^-shaped mark; main stem of aedeagus narrow in lateral view, not separated from ventral processes at base (Fig. 168). .qrandis (p. 248) 76T. Small orange dot just to inside of each ocellus sur rounded by dark brown; narrow orange lin e between dot and ’^"-shaped mark; main stem of aedeagus wide in lateral view, widely separated from ventral processes at base (Fig. 170) remotus (p. 251)

* 77 (74’)■ Apical margin of male pygofer with long, sturdy tooth extending ventrad (Fig. 173)...... spinosus (p. 254) 77'. No tooth on apical margin of male pygofer...... 78

78 (77*). Main stem of aedeagus wide in lateral view, dis tinctly longer than ventral processes (Figs. 175, 177, 179) ...... 79 781. Main stem of aedeagus narrow in lateral view, about as long as ventral processes (Fig. 181)...... 8 1 42 70'. Not fitting above description...... 71

71 (701)* Aedeagus with p a ir of long ven tral processes (Fig. 162)...... 72 71*. Aedeagus without pair of long v en tral processes, a t most with short ventral spine (Fig. 193)...... 86

72 (71). Wide light.longitudinal band down middle of scu tellum; light dashes along anterior margin of vertex and spot behind apex very wide; white band across posterior portion of vertex, with cross-bar of "TM- shaped mark at most only very faintly outlined in brown...73 72f. Not fitting above description...... 74

73 (72). Background color of vertex reddish-brown; triangu lar spot behind apex clearly separated* from dashes on an terio r margin by d is tin c t th in brown lin e s . albocinctus (p. 238) 73'. Vertex generally tawny; spot behind apex blending with dashes on anterior margin, with only faint dots between them...... lineatus (p. 2£1)

74 (72’). Ventral processes of aedeagus distinctly longer than main stem in lateral view (Figs. 166, 168, 170)...... 75 74*. Ventral processes of aedeagus at most only very slightly longer than main stem in lateral view (Fig. 172) ...... 77 67f. Elytra heavily marked with brown, many cells with white spots; ventral processes of aedeagus narrower, lacking dentation (Figs. 155**158)...... 68

68 (67*). Dashes along anterior margin of vertex long and almost straight; ’^"-shaped mark faded along coronal suture, appearing as white spots margined with brown halfway between eyes and coronal suture ... .fumidus (p. 227) 68'. Dashes along anterior margin of vertex short and curved; "T-shaped mark distinct...... borealis (p. 230)

69 (65'). Qrangish-yellow band along anterior margin of vertex enclosing ocelli, wavy on posterior margin, bor dered posteriorly by dark brown line interrupted at middle by triangular pale spot; rest of vertex orangish-yellow, with whitish "T^-shaped mark outlined in brown camptus (p. 234) 69'. Not fitting above description...... 7 0

70 (691). Cross-bar of ,,T"-shaped mark on vertex expanded laterally to form white band across posterior portion of vertex, irregular along anterior margin, extended forward along eyes, and enclosing narrow brown band along median half of posterior margin; dashes on anter ior margin of vertex short, wide, irregular on lateral ends, not reaching ocelli; elytra tawny with brown and white spots ...... niqrocinctus (p. 236) 40 scutellum; elytra whitish, several cells toward tips with white spots margined with brown; apical portion of style rather short but fairly straight (Fig. 150) ...... cvrtocaulus (p. 216) 64’. Not fitting above description ...... 65

65 (64’). Spot behind apex of vertex like narrow longitudi nal dash, connected to apical dot, not distinctly tri angular or diamond-shaped; dashes to each side of apical dot quite narrow 66 65*. Spot behind apex of vertex clearly triangular or diamond-shaped, usually very wide; dashes to each side of apical dot fatter and of more irregular width 69

66 (65). Pale markings on vertex almost white, very dis tinct; aedeagus very long and narrow in ventral view (Fig. 151); in lateral view, ventral processes of aedeagus arising about halfway between dorsal projec- * tion and tip of main stem (Fig. 152) appressus (p. 218) 66f. General brownish color on vertex, pale markings less light and distinct; aedeagus not long and narrow in ventral view, ventral processes arising near base of dorsal projection (Figs. 153-158)...... 67

67 (661)- E lytra w hitish with few brown dots; v entral pro cesses of aedeagus wide, dentation on ventral or inner margins (Figs. 153, 154)...... consors (p. 221) 39 61 (601). Anterior one-third of vertex, from line between o c e lli to margin, white and unmarked; markings on posterior two-thirds of vertex heavy and dark...... apioatus (p. 208) 61'. Not fitting above description...... 62

62 (61*). Pale ocelli, pale dot at apex of vertex connected to triangular pale spot behind apex, and oblong orange spots to each side of apical dot all surrounded by heavy dark brownj brown at apex of coronal suture blending with brown along a n te rio r margin of v e r te x .... chromatus (p. 210)

62'. Not fitting above description.. 63

63 (62f ). Narrow, even pale lin e along an terio r margin of vertex between ocelli bordered above and below by narrower, even, dark brown line; faint whitish triangu lar spot behind marginal lines at middle; general color tawny, markings pale and light brown ritanus (p. 213) 631. Not fitting above description...... 64

64 (63*). Anterior margin of vertex very broadly rounded in dorsal view; median length of, vertex much less than distance between eyes at posterior margin; pale spot at apex of vertex extended into long, broad line to each side, broadly connected to diamond-shaped spot behind; general yellowish pale color on vertex, pronotum and 38 56f. Pale dashes along anterior margin of vertex and spot behind apex narrow; whitish color on elytra confined to spots inside cells; ventral processes of aedeagus fair ly wide, longer than main stem, with dentation on ven tra l margins (Figs. 132, 133)...... oornicrer (p. 193)

57 (55'). Large whitish area across base of elytra ...... bifasciatus (p. 196) 57'. No such whitish area across base of elytra ...... 58

58 (57*). Ventral processes of aedeagus distinctly shorter than main stem (Figs. 136, 137)...... tenuis (p. 199) 58*. Ventral processes of aedeagus at least as long as main stem (Figs. 138-140) ...... 59

59 (58* ). Main stem of aedeagus parallel to ventral pro cesses in lateral view (Fig. 139)...... acricapitus (p. 202) 59f. Main stem of aedeagus almost straight in lateral view, ventral processes strongly curved dorsad (Fig. 140).... albolineus (p. 204)

60 (53T). Vertex bright, dark yellow; ”T1f-shaped mark and markings along anterior margin whitish, faint but clearly visible; pronotum and scutellum orange; elytra orangish-yellow with white band along commissural line and sides of scutellum interrupted by brown dots at ends of claval veins...... icmavus (p. 206) 60*. Not fitting above description...... 61

i 37 521. Median length of vertex about equal to distance be tween eyes at posterior margin; aedeagus not fitting above description (Figs. 126, 127)...... alatus (p. 184)

53 (42'). Anterior margin of vertex sharply angled in dor sal view; median length of vertex greater than distance between eyes at posterior margin...... 54 53'. Anterior margin of vertex more rounded in dorsal view; median length of vertex about equal to or less than distance between eyes at posterior margin...... 60

54 (53). Pale round dot at apex of vertex fused to narrow diamond-shaped spot behind; short thin dash off each side of apical dot extending backwards; light orange spot just inside each ocellus; vertex behind ocelli dark brown, 1lT"-shaped mark reduced to four longitudi nal white dashes; two white spots next to each eye...... decorus (p. 187) 54*. Not fitting above description...... 55

55 (54*). General tawny-yellow color; markings on vertex rather light...... 56 551. General color brownish; markings on vertex heavy, dark...57 t

56 (55). Pale dashes along anterior margin of vertex and spot behind apex quite wide; whitish color on elytra widespread; ventral processes of aedeagus very narrow, shorter than main stem (Figs. 130, 151) soicatus (p. 190) 49f . Transverse brown band a t apex of coronal suture lig h t; other markings on vertex light, general color tawny .52

50 (49). Ventral apical portion of male pygofer with long pointed spine extending caudad; main stem of aedeagus tapered gradually curved dorsad then anteriorly to form narrow, blunt-pointed apex...... trimaculatus (p. 17S) 50'. Male pygofer without long spine on ventral apical por tion; aedeagus not fitting above description...... ,..5 1

51 (50'). Median length of vertex slightly less than dis tance between eyes at posterior margin, anterior margin rather rounded; ventral processes of aedeagus very nar row, spine-like, arising near base of..main stem and ex

tending nearly to tip (Fig. 123) alaudus (p.177) 511. Vertex more angularly produced, median length equal to distance between eyes at posterior margin; ventral pro cesses of aedeagus slender, extending slig h tly beyond tip of main stem acuminatus (p. 180)

52 (49*). Median length of vertex distinctly less than dis tance between eyes at posterior margin; aedeagus great ly expanded laterally and dorsally just beyond base, forming more-or-less rectangular plate, very thin in lateral view, with main stem arising from dorsal end of plate and pair of ventral processes arising from ven t r a l end near base (Figs. 124, 125)...... ecuadoricus (p. 182) 35 461. Yellowish-orange areas to each side of apical half of coronal suture not forming definite band; ’^"-shaped mark distinct, white outlined in brown; general color lighter, tawny; apical portion of male pygofer much longer than wide (Fig. 117); each ventral process of aedeagus with long caudad-pointed tooth on inner margin halfway to apex, no sclerotized spiral in apical half (Fig. 115),...... furcillatus (p. 167)

47 (45*). Wide dark brown band along an terio r margin of vertex between eyes, enclosing pale ocelli, pale round dot at apex, and oblong orange dash to each side of apical dot and only faintly connected to it; pale diamond-shaped spot behind apex and large orange spots midway between apex of coronal suture and eyes all sur rounded with brown; "T^-shaped mark distinct, white bordered with brown...... libratus (p. 170) 47*. Not fitting above description...... 48

48 (471 ). Main stem of aedeagus long and very broad, lamel lar ly flattened; ventral processes slender and very short, arising near base of aedeagus (Fig. 121)...... lamellar!s (p. 173) 481. Not fitting above description...... 49

49 (48T). Transverse brown band at apex oif coronal suture very heavy and dark; other markings on vertex heavy....50 between eyes at posterior margin 44

44 (43*). Marrow pale band along anterior margin of vertex between, but not quite reaching, ocelli, bordered above and below by narrow dark brown band; sm all round pale dot at middle just behind marginal lines; short, nar row, transverse brown band at apex of coronal suture; most of vertex dark yellow-orange, "T1,-shaped mark re duced to irregular white area along posterior margin...

• • • 44'. Not fitting above description...... 45

45 (44* ). Pale band along anterior margin of vertex between ocelli of almost even width and only slightly curved to each side of apex; pale triangular spot behind apex ex panded laterally into narrow band extending straight across vertex between ocelli...... 46 45f ...... Not fitting above description...... 47 »

46 (45). Transverse orange band across middle of vertex; "T-shaped mark indistinct; pronotum and scutellum gen erally dark orangish-yellow; apical portion of male py gofer about as wide as long (Fig. 114); each ventral process of aedeagus with no tooth on inner margin, api cal half bearing sclerotized spiral (Fig. 112)...... excavatus (p. 165) 33 40*. Markings on vertex sharp, brown outlining HT,r-shaped mark darker, spot behind apex larger and triangular; main stem of aedeagus in lateral view narrow; ventral processes of even width, not expanded dorsally (Figs. * 107, 109) ...... 41

41 (40T). Brown bordering anterior edges of base and cross bar of ,,T,,-shaped mark on vertex forming th re e sh o rt, narrow bands of even width; ventral processes of aedea gus in lateral view curved dorsad, then caudad only near tip (Fig. 107); tips of ventral processes in ven tral view almost straight (Fig. 106)...... filamentus (p. 155) 41*. Brown bordering anterior edges of base and cross-bar of ’^"-shaped mark on vertex much heavier and more i r regular; ventral processes of aedeagus in lateral view curved dorsad, then caudad at about half their length (Fig. 109); tips of ventral processes in ventral view curved mesad (Fig. 108)...... trifrustrus (p. 158)

42 (331 )* Large species, 6 mm. or more in length...... 43 42*. Smaller species, between 5 and 6 mm. in length...... 53

43 (42). Anterior margin of vertex sharply pointed in dor sal view; median length of vertex greater than distance between eyes at posterior margin .curvatus (p. 160) 43f. Anterior margin of vertex rounded in dorsal view; me dian length of vertex equal to or less than distance 32 processes (Figs. 98, 99) f lavibrunneus. (p. 144)

38 (36'). Anterior margin of vertex distinctly pointed in dorsal view; e ly tra w hitish with few brown markings, most along costa or commissural line capitatus (p. 147) ' 38*. Anterior margin of vertex more rounded in dorsal view; elytra generally tawny, several cells with distinct brown and white patches...... 39

39 C381). All pale markings on vertex heavily margined with dark brown; row of very d is tin c t white and dark brown spots all along anterior margin of pronotum; ventral processes of aedeagus in ventral view appressed and nearly straight, divergent only near tips (Fig. 102)... salsus (p. 149) 39'. Brown around pale markings on vertex incomplete and less distinct; row of spots along anterior margin of pronotum incomplete and less distinct; ventral pro- « cesses of aedeagus in ventral view divergent from base (Figs. 104, 106, 108) ...... 40

40 (39’ ). Markings on vertex somewhat faded, brown o u tlin ing nT"-shaped mark rather light, spot behind apex small and round; main stem of aedeagus in lateral view wide; ventral processes expanded dorsally along middle halves (Fig. 105)...... a te r (p. 152) "TM-shaped mark at back of vertex present but indis tin c t; r e s t of vertex dark orange...... castaneus (p. 136) 341. Not fitting above description...... 35

35 (34*). Generally dark appearance; markings very heavy and d is tin c t; veins of e ly tra dark brown, most c e lls with dark brown and white markings; white spots sur rounded by brown along commissural line especially d is tin c...... t obscurus (p. 139) 35*. Generally tawny appearance; markings on vertex, and especially on elytra, not so heavy and distinct...... 36

36 C35r). Median length of vertex less than distance be tween eyes at posterior margin; spot behind apex large, wide, triangular; dashes between apical spot and ocelli f a t ...... 37 36*. Median length of vertex as great as or greater than distance between eyes at posterior margin; spot behind « apex smaller, sometimes rounded; dashes between apical spot and o c e lli slen d...... er 38

37 (36). Elytra rather whitish, veins lightly marked with brown, a few brown spots in c e lls ; main stem of aedea gus without v entral processes ...... tumidus (p. 142) 37*. Elytra generally tawny, veins distinctly marked with brown, many c e lls with d is tin c t brown and white patches; main stem of aedeagus with pair of ventral 30 31 (28f). Apical half of male pygofer more-or-less trian gular, sides fairly straight (Fig. 88); ventral pro cesses of aedeagus expanded slightly below long narrow apices, not rugose on apical halves (Figs. 86, 87) ...... circulus (p. 127) 31*. Apical half of male pygofer rounded on each side to tip (Fig. 91); ventral processes of aedeagus tapered gradually to tips, rugose on apical halves (Figs. 90, 93)...... 32

32 (31*). Main stem of aedeagus extended dorsad, bent ventrad, then dorsad again; ventral processes widely separated from stem near base (Fig. 90); posterior mar gin of female 7th sternite sinuate, with short rounded median process (Fig. 225)...... reversus (p. 129) 32*. Main stem of aedeagus curved gradually dorsad, then slightly caudad at tip; ventral processes not widely separated from stem near base (Fig. 93); posterior mar gin of female 7th sternite with long, triangular median projection (Fig. 226) affinis (p. 132)

33 (2f>)' Small species, less than 5 mm. in length...... 34 33'. Large species,'5 mm. or more in length...... 42

34 (33). Pale, even band along anterior margin of vertex between ocelli bordered above by a dark brown band, small pale dot at middle behind brown band; inverted 28 (271). Ventral processes of aedeagus about as long as or slightly longer than main stem, at most only slightly divergent in ventral view (Figs. 78, 79)...... 29 281. Ventral processes of aedeagus distinctly longer than main stem, distinctly divergent in ventral view (Figs. 86, 8 7) ...... 31

29 (28). Main stem and ventral processes of aedeagus in lateral view curved strongly dorsad (Fig. 79); ventral processes in ventral view slender, arising at one- fourth total length from base (Fig. 78). .compressus (p. 120) 29*. Main stem and ventral processes of aedeagus curved only slightly dorsad (Figs. 81, 84); ventral processes in ventral view stouter, arising further than one- fourth total length from base (Figs. 80, 83) ...... 30

30 (29*). Male pygofer more-or-less pointed at apex (Fig. 82); main stem of aedeagus with slight caudal expansion at tip; ventral processes of aedeagus in lateral view expanded slightly below tips, tips divergent in ventral view (Figs. 80, 81) lunus (p. 123) 30'. Male pygofer rounded at apex (Fig. 85); main stem of aedeagus without caudal expansion at tip; ventral pro cesses not expanded beiow tips, tips not divergent in ventral view (Figs. 83, 84) pandus (p. 125) 28 24 (231). Ventral processes of aedeagus distinctly shorter than stem (Figs. 68, 69)...... respublicanus (p. 112) 24*. Ventral processes of aedeagus not distinctly shorter than stem...... 25

25 (24*). Ventral processes of aedeagus in lateral view straight or nearly so, not curved dorsad (Figs. 71, 74) ...... 26 251. Ventral processes of aedeagus in lateral view curved dorsad (Fig. 77)...... 27

26 (25). Ventral margin of male pygofer almost semi circular (Fig. 72); main stem of aedeagus in lateral view straight almost to tip, then bent dorsad and recurved ventrad; ventral processes of aedeagus rugose on apical halves (Figs. 70, 71) ...... hamatus (p. 114) 26'. Ventral margin of male pygofer only gradually rounded (Fig. 75); main stem of aedeagus curved gradually dorsad with slight caudal expansion at tip; ventral pro cesses of aedeagus not rugose on apical halves (Figs. 73, 74) .eurvcenhalus (p. 116)

27 (251). Ventral processes of aedeagus stout, with trian gular dorsal expansions (Figs. 76, 77)...linnavuori (p. 118) 271. Ventral processes of aedeagus slender, without dorsal expansions...... 28 27 slightly dorsad (Figs. 56, 57); posterior margin of female 7th sternite with triangular median projection (Fig. 220) (p. 101) 211. Ventral processes of aedeagus in ventral view separ ated at base and more divergent at tips, in lateral view tapered from base and curved more sharply dorsad (Figs. 59, 60); posterior margin of female 7th sternite with broad median projection indented slightly at mid dle (Fig. 221) hvalirms (p. 103)

22 (201). Ventral processes of aedeagus almost straight and parallel-sided in both lateral and ventral views, tapered only slightly near tips (Figs. 61, 62)...... pulligalbus (p. 106)

22*. Ventral processes of aedeagus each with long, sharp tooth on dorso-lateral margin at about three-fifths distance to apex, lateral margin of each ventral pro cess in ventral view curved inward to tooth then slightly outward and tapered back to tip (Figs. 63, antlerus (p. 108)

23 (181). Apical portion of male pygofer almost semi circular, inside of apical margin with long spine bent ventrad and basad (Fig. 67)...... spinellus (p. 110) 23T. Not f ittin g above d esc rip tio n...... 24 2 6 ventrally at one-half its length, passing between forks of bifid process arising where aedeagus bent dorsad (Figs. 50, 51) unicolor (p. 96) 17*. Not fitting above description...... 18

18 (17f). Eygofer of male elongate, length at least 2x greatest width, apical portion rather slender and ta pered to fairly sharp point (Fig. 58)...... 19 18’. rygofer not so elongate, length less than 2x greatest width, apical portion more rounded especially on ven tral margin (Fig. 72)...... 23

19 (18). Ventral processes of aedeagus only slightly longer than main stem (Figs. 54, 55)...... pusillus (p. 99) 19T. Ventral processes of aedeagus distinctly longer than main stem...... 20

20 (191). Main stem of aedeagus curved sharply dorsad beyond dorsal projection; ventral processes curved dor sad (Figs. 57, 60)...... 21 201. Main stem of aedeagus curved gently dorsad then turned caudad at tip; ventral processes almost straight (Figs. 62, 64)...... 22

21 (20). Ventral processes of aedeagus in ventral view appressed for half their length and only slightly diver gent at tips, in lateral view swollen slightly above their base then tapered to tips and curved only 25 14*. Two orange spots on vertex smaller, faded posteriorly; pronotum lacking distinct orange areas behind inner margins of eyes; elytra marked only by two small dots along commissural line cibus (p. 90)

15 (13*). Large species, 5.5-6 mm. in length. 16 15'. Smaller species, 5 mm. or less in length 17

16 (15). E lytra with several sm all brown d o ts, most along commissural line or costa; basal portion of plate ta pered sharply to slender apical portion, apical portion about 1.5x length of basal portion (Fig. 46); base of aedeagus almost square in ventral view, apical half of each ventral process rugose (Fig. 44) asnerus (p. 92) 16*. Spots on e ly tra larg er and darker; p la te tapered more gradually, slender apical portion only about one-fourth of total length (Fig. 49); base of aedeagus- slender in ventral view, apical halves of ventral processes not « rugose (Fig. 47) ...... sniniloba (p. 94)

17 (151). Unusually dark and robust species; pygofer of male rounded apically, with row of short spines on apical portion of ventral margin (Fig. 52); plate ta pered very gradually, slender apical portion much shorter than basal portion (Fig. 53); aedeagus bizarrely shaped, bent sharply dorsad at one-fourth total length, then bent even more sharply back upon itself 24 peak to each side of broad, shallow, rounded median ex cavation (Fig. 218) limosus (p. 82) 12M. Short brown longitudinal dash along inner margin of eye at each end of boundary between orange and pale transverse bands on posterior two-thirds of vertex; pronotum with irre g u la r brown smudges behind eyes and two brown dots a t cen ter behind orange spot along mid dle of anterior margin; aedeagus slender in ventral view, two slender ventral processes separated at about one-half length of aedeagus and tapered gradually to pointed apices (Fig. 38); apical portion of style not as stout as in previous two descriptions, expanded at tip, no tooth near apex (Fig. 40); posterior margin of female 7th sternite almost flat, very slightly produced at middle (Fig. 219)...... rotundus (p. 85)

13 (21). Vertex yellow, with two rounded orange spots...... 14 13T. Vertex not fitting above description; coloring and markings v a ria b le ...... 15

14 (13). Two orange spots on vertex large, somewhat oval, very distinct; pronotum with orange areas just behind inner margins of eyes; elytra marked with three brown dots on commissural line at ends of claval suture and claval veins, two brown dots marking costal veinlets at each end of outer anteapical cell, and three dots along m idline...... cirrhostigmatus (p. 88) 23 lacking brown markings or with few distinct brown dots; apical portion of style thicker than usual; aedeagus not fitting above description...... 12

12 (11*). Boundary between orange and pale transverse bands . on posterior two-thirds of vertex with four almost round and evenly spaced small brown dots; pronotum w ith three brown dashes on each side just behind eyes, each dash shorter than the next one to the outside, and two small dots near the center; ventral processes of aedea gus wide in ventral view, separated at about half the length of the aedeagus, and tapered sharply near ends to slender apices pointed laterad (Fig. 31); apical portion of style very stout (Fig. 34); posterior mar gin of female 7th sternite with very deep median inden tation, sides of sternite tapered to form pointed peak to each side of indentation (Fig. 217)....auronitens (p. 75) 12*. No brown markings on boundary between orange and pale transverse bands on posterior two-thirds of vertex; several brown dots and dashes forming line across pro notum behind eyes and orange spot at middle of anterior margin; ventral view of aedeagus as in above descrip tion except ventral processes separated nearer base of aedeagus (Fig, 35); apical portion of style stout, with pointed tooth on ventral side near apex (Fig. 37); posterior margin of female 7th sternite with rounded 22 9’. Scutellum tawny-colored, with darker yellow spots in basal angles; dark line at apex of coronal suture about one-third distance to eye on each side; apical portion of style narrow, tip not enlarged (Fig. 27); ventral processes of aedeagus in lateral view arising about one-third distance along stem (Fig. 26)...... bellus (p. 68)

10 (7T), Outer anteapical cell of elytra large, with apical end tru n cate and basal end two-sided; no brown.dots in line across middle of pronotum; stem of aedeagus lack ing ventral processes (Fig. 28)...... rurrens (p. 70) 10*. Outer anteapical cell of elytra smaller, more-or-less pointed a t each end; few to several brown spots in fairly straight line on pronotum behind eyes and orange spot at middle of anterior margin; stem of aedeagus

* with pair of ventral processes ...... 11

11 (101). Boundary between orange and pale transverse bands * on posterior two-thirds of vertex irregular and indis tin c t with some very fa in t irre g u la r brown markings; few small brown spots to each side of pronotum ju s t be hind eyes; apical portion of style slender; aedeagus very slender in ventral view, two ventral processes separated near base but appressed for two-thirds their length (Fig. 29) anonae (p. 72) 11*. Boundary between orange and pale transverse bands on posterior two-thirds of vertex quite straight, either 21 7 (6). Anterior margin of vertex rather pointed in dorsal view, forming almost a rig h t angle; median length of vertex about equal to distance between eyes at poster io r margin...... 8 7*. Anterior margin of vertex more rounded in dorsal view, forming an obtuse angle; median length of vertex less than distance between eyes at posterior margin...... 10

8 (7 ). Dark brown lin e above a n te rio r margin of vertex heavy, about as wide as pale line along margin, dis tinctly wider than dark line below margin; orange spot at middle of anterior margin of pronotum small; ventral processes of aedeagus in lateral view arising near base of stem (Fig. 1 9 ),...... puniceus (p. 62) 8 1. Dark brown lin e above an terio r margin of vertex not unusually heavy, narrower than pale line along margin; orange spot at middle of anterior margin of pronotum ldrge; ventral processes of aedeagus in lateral view arising above base of stem (Figs. 22, 26)...... 9

9 (8*). Scutellum whitish, with large orange spot in each basal angle; dark line at apex of coronal suture reach ing about halfway to eye on each side; apical portion of style thicker than usual, with enlarged tip pointing dorsad (Fig. 24); ventral processes of aedeagus in lateral view arising about halfway along stem (Fig. 22),...... tripartitus (p. 65) 2° truncate; ventral processes of aedeagus with sclerotized spirals in apical halves (Figs. 5, 6)...... fulvomaculatus (p. 49) 4'. White area behind marginal lines of vertex triangular at center with narrow line extending to each side al most to eye, dark line behind triangular spot short and rather thick; outer anteapical cell of elytra rounded at sides with ends pointed; ventral processes of aedeagus lacking sclerotized spirals (Figs. 8, 9)...... magnus (p. 55)

5 (31). Markings and colors on vertex sharp and distinct; bright orange markings on vertex, pronotum and scutellum; main stem of aedeagus with pair of ventral pro cesses (excluding rurrens)...... 6 5'. General tawny color; markings on vertex relatively dull and light; markings on vertex, pronotum and scutellum dark yellow with orange tinge; stem of aedeagus lacking ventral processes (Figs. 11, 12)...... parallelus (p. 57)

6 (5). Elytra with two costal veinlets marked with brown, one near each end of outer anteapical cell; main stem of aedeagus curved dorsad...... 7 61. Elytra with several costal veinlets, each heavily marked with dark brown; main stem of aedeagus almost straight in lateral view, turned dorsad just at tip (Fig. 16) cruerreroensis (p. 59) simple...... 13 1. More-or-less fitting the following description: in verted "T^-shaped mark on posterior half of vertex, formed by pale bands along coronal suture and p o sterio r margin of vertex, bordered with brown; pale spot at apex of vertex with pale curved dashes to each side a- long margin and a more-or-less triangular spot behind; ely tra o ften heavily marked (F ig. 1 )...... 33

(2). Lines along margin of vertex of irregular width, the upper dark line interrupted at middle by a thin white line; white area behind marginal lines more-or-less triangular; pale band along posterior margin of vertex extended forward into orange band at each end near eye, and separated from orange band by irregular series of lig h t brown markings...... 4 . Lines along margin of vertex of even width, upper dark line not interrupted at middle; white area behind mar ginal lines long and narrow, not appearing triangular; pale band along posterior margin of vertex of even width, ends not extended into orange band, and usually with no brown markings along n a te rio r edge...... 5

(3). White area behind marginal lines of vertex widely triangular, straight'along posterior edge, with long, narrow, fa in t brown lin e behind; outer anteapical c e ll of elytra elongate rectangular, with ends more-or-less KEY TO SPECIES OF OSBORNELLUS BALL

Outer anteapical cell of elytra almost always elongate and truncate at both ends (Fig. 2); connective long; apical portion of style long, slender and quite straight (Fig. 7) ...... 2

. Outer anteapical cell of elytra obovate, short and usually pointed at both ends; connective short; apical portion of style short and curved sharply dorsad (Fig. 203)...... 90

(1). Pale narrow line along anterior margin of vertex be tween ocelli, bordered above and below with dark brown narrow line; narrow white area behind marginal lines not quite reaching eyes, bordered behind on median half by dark, narrow transverse line at apex of coronal su ture; wide orange transverse band between anterior por tions of eyes; wide pale band along posterior margin of vertex; orange markings on pronotum and scutellum...... 3 . General overall yellow or straw color (rarely darker) with few markings; e ly tra often with few sm all brown dots along costa or commissural line; markings on ver tex usually absent or, if present, faint and very Osbornellus mexicanus (Osborn), 1900a, Scaphoideus mexicanus Osborn, 1900a.

Osbornellus infuseatus Linnavuori. 1955.

Osbornellus alveus DeLong and Martinson, 1976b.

Osbornellus sinuatus n. sp.

Osbornellus anoustatus DeLong, 1976.

Osbornellus crocus n. sp.

Osbornellus fasciatus Metcalf. 1954.

Osbornellus qilvus n. sp.

Osbornellus bimarqinatus bimarqinatus (DeLong), 1923. Scaphoideus bimarqinatus DeLong. 1923.

Osbornellus bimarqinatus montanus Caldwell and M artorell

Osbornellus multivittatus n. sp. Osbornellus albocinctus DeLong, 1941b. Osbornellus d ig itu s DeLong and Martinson, 1976b

Osbornellus lineatus Beamer, 1937.

Osbornellus sc a la ris (Van Duzee), 1890. Scaphoideus scalaris Van Duzee, 1890.

Osbornellus grandis DeLong, 1942.

Osbornellus remotus DeLong and Martinson, 1976b.

Osbornellus spinosus DeLong. 1942.

Osbornellus rarus DeLong, 1941b.

Osbornellus rubellus DeLong, 1941b.

Osbornellus omani Beamer, 1937.

Osbornellus unus n. sp.

Osbornellus stigmatus n. sp.

Osbornellus leucostigmatus n. sp.

Osbornellus pallidus Beamer, 1937. Osbornellus separatus DeLong. 1942.

Osbornellus clarus Beamer, 1937. Osbornellus concentricus DeLong. 1942.

Osbornellus flexuosus Linnavuori, 1959. Osbornellus cornicrer Beamer, 1937.

* i Osbornellus bifasoiatus Beamer, 1937.

Osbornellus tenuis Beamer, 1937.

Osbornellus acricapitus n. sp.

Osbornellus albolineus DeLong, 1941b.

Osbornellus icmavus Ball. 1936.

i , Osbornellus apicatus DeLong, 1941b. Osbornellus apicalis DeLong. 1976.

Osbornellus chromatus n. sp.

Osbornellus ritanus Ball, 1932. Osbornellus fcnulli DeLong and Beery, 1937.

Osbornellus ovrtooaulus n. sp.

« Osbornellus appressus DeLong, 1942.

Osbornellus consors (Uhler), 1889. Scaphoideus consors Uhler, 1889.

Osbornellus fumidus Beamer, 1937.

Osbornellus borealis DeLong and Mohr, 1936.

Osbornellus camptus n. sp.

Osbornellus niqrocinctus DeLong. 1942. Osbornellus sals us DeLoncr. 1942. Osbornellus aculeus DeLong and Martinson, 1976b.

Osbornellus a te r Beamer, 1937.

Osbornellus filamentus DeLong and Beery, 1937.

Osbornellus trifrustrus DeLong and Martinson, 1976b.

Osbornellus curvatus Beamer, 1937.

Osbornellus colossus n. sp.

Osbornellus excavatus DeLong and Martinson, 1976b.

Osbornellus furcillatus DeLong, 1941b.

Osbornellus libratus DeLong, 1941b.

Osbornellus lamellaris Linnavuori, 1959.

Osbornellus trimaculatus DeLong, 1942.

Osbornellus alaudus DeLong, 1942.

Osbornellus acuminatus DeLong. 1942,

Osbornellus ecuadoricus Linnavuori, 1959.

Osbornellus alatus Beamer, 1937.

Osbornellus decorus Beamer, 1937.

Osbornellus spicatus Beamer, 1937. Ogbornellus respublicanus (Berg), 1879. Deltocephalus respublicanus Berg. 1879. Osbornellus dlcerus DeLoncr. 197S.

Osbornellus hamatus DeLong and Martinson, 1976a.

Osbornellus eurvcephalus n. sp.

Osbornellus linnavuori DeLong, 1976.

Osbornellus compressus Linnavuori. 1959.

Osbornellus lunus DeLong. 1976.

Osbornellus pandus DeLong, 1941b.

Osbornellus circulus DeLong and Martinson, 1976a.

Osbornellus reversus DeLoncr. 1942.

Osbornellus affinis (Osborn), 1923. Sdaphoideus affinis Osborn, 1923. Osbornellus oapitatus DeLong and Martinson, 1976b.

Osbornellus oastaneus n. sp.

Osbornellus obscurus n. sp.

Osbornellus tumidus DeLong, 1942.

Osbornellus flavibrunneus n. sp.

Osbornellus capitatus DeLong and Knull, 1941. Osbornellus auronitens (Provancher), 1889. Soaphoideus auronitens Provancher, 1889.

Osbornellus llmosus DeLong, 1941a.

Osbornellus rotundus Beamer. 1937.

Osbornellus cirrhosticrcnatus n. sp.

Osbornellus cibus DeLong and Martinson, 1976b.

Osbornellus asperus DeLong and Martinson, 1976a.

Osbornellus spiniloba Linnavuori and H eller, 1961

Osbornellus unicolor (Osborn), 1900a. Scaphoideus consors unicolor Osborn, 1900a. Scaphoideus unicolor Osborn, 1911.

Osbornellus pusillus n. sp.

Osbornellus vicinus Linnavuori and Heller, 1961.

Osbornellus hvalinus (Osborn), 1923. Scaphoideus hvalinus Osborn. 1923.

Osbornellus pullicralbus n. sp.

Osbornellus antlerus DeLong and Martinson, 1976a.

Osbornellus spinellus DeLong and Martinson, 1976a CHECKLIST OF OSBORNELLUS BALL

OSBORNELLUS B all, 1932.

Osbornellus fulvomaculatus fulvomaculatus (Osborn), 1923. Scaphoideus fulvomaculatus Osborn, 1923. Osbornellus blantoni Linnavuori. 1959. Osbornellus lacunis DeLong and Martinson, 1976b.

Osbornellus fulvomaculatus unilineatus Linnavuori, 1959. Osbornellus blantoni unilineatus Linnavuori, 1959.

Osbornellus magnus n. sp.

Osbornellus parallelus DeLong and Knull, 1941.

Osbornellus ouerreroensis n. sp.

« Osbornellus puniceus DeLong, 1941b.

Osbornellus tripartitus DeLong, 1941b.

Osbornellus bellus n. sp.

Osbornellus rurrens DeLong, 1941b.

Osbornellus anonae Linnavuori. 1959.

11 this is not usually a problem. Characters of the male genitalia and female 7th sternite are very consistent. Aedeagus bilaterally symmetrical in ventral view; slender at base with short dorsal projection near base; main stem (through which the ejaculatory duct passes) usually long, slender, curved dor sad, bearing pair of ventral processes. Female 7th sternite at least twice as long as preceding sternite, usually produced medially.

DISCUSSION ■ Members of the genus Osbornellus can be recognized by the long antennae, outer anteapical cell parallel to costa, vertex forming acute angle with face, and plates elongated into filamen tous processes. The most closely related genus, Scaphoideus. has oblique outer anteapical cells and strongly reflexed claval veins and costal veinlets, and lacks the filamentous plates. Most species fit one of the color patterns described in the key under 2, 2f, and 2fl quite closely, and workers in the genus soon learn to recognize these patterns. Those fitting the pat tern described under 2 are very similar in appearance and are re ferred to as the "auronitens group” - this group includes fulvomaculatus. maonus. parallelus. querreroensis. puniceus. tripartitus. bellus. rurrens. anonae. limosus. rotundus and auronitens. The four species from the Caribbean Islands are also very similar in appearance to one another - these are fasciatus, crilvus. bimarqinatus and multivittatus. There is some variation in color pattern among members of the same species, concerning general lightness and darkness and intensity of the markings, but GENUS OSBORNELLUS BALL

Osbornellus Ball, 1932. Jour. Wash. Acad. Sci. 22: 17. Type species: Scaphoideus auronitens Provancher.

DESCRIPTION Elongate, slender species; length from apex of vertex to apices of elytra between 3.5-7.0 mm., usually between 4.5-5.5 mm. Head about as wide as pronotum or slightly narrower. Antennae long. Face elongate, bluntly triangular; clypeus elongate, widening apically; genae broad, lateral margins slightly sinuate; lorae large, almost reaching lateral margins of genae. Anterior margin of vertex rounded in lateral view, roundedly angulate in dorsal view; ocelli large and close to eyes. Elytra long and slender; appendices distinct; two closed anteapical cells, outer anteapical cell parallel to costa with slightly reflexed veinlet from each end to costa. lygofer with numerous macrosetae, expanded to d o rsal side beyond base, apical portion (apical one-third to one-half beyond dorsal expansion) narrowed and usually tapering. Male plate with apical portion elongated into filamentous, and often plumose, process. Style with wide basal portion and slender apical por tion; angle between the portions obtuse. Connective Y-shaped.

8 general appearance (vertex, pronotum, scutellum, elytra), de scription of male genitalia (pygofer, plate, style, aedeagus in ventral and lateral views), description of female 7th sternite, length (from apex of vertex to apices of elytra), recognition characters, specimens examined, distribution. Wherever possible, descriptions of general appearance and genitalia are given in the same order and style, to make comparison as easy as possible. photographed, reduced if necessary, and reproduced on paper with a matte finish for use in this dissertation. Drawings were not made to scale, the sizes of the structures drawn varied too much to make this practical; they were made so that drawings of the same structure in different species would be more-or-less the same size. Figures 3 and 4 are oriented so that the base of each abdomen is to the left when the page is upright or to the top when the page is turned sideways so that numbers and labels can be read. All other drawings of genitalia are oriented with the base to the bottom of the page. Each lateral view of an aedeagus was drawn as from the left side of the abdomen so that the dorsal side of the aedeagus is to the left. Each drawing of one of a pair of structures of the male genitalia (i.e., a pygofer, plate or style) was made from that member of the pair from the left side of the abdomen. Each pygofer was drawn in la te r a l view with the dorsal side to the left. Each plate and style was drawn in ventral view with the mesal side to the right.

TERMS The terms used in this revision are as given and illustrated by DeLong (1948). These terms are widely used by leafhopper spe cialists; most discrepancy in terms occurs in reference to the male genitalia. Many terms are illustrated in Figs. 3 and 4.

SYSTEMATIC FORMAT The following information is given for each species: name, author, figure numbers, catalog, type locality, description of METHODS AND MATERIALS

DISSECTING TECHNIQUES In order to examine the male genitalia, the abdomen is separated from the thorax and cleared in a gently heated potas sium hydroxide solution (approximately 10&). This procedure makes it possible to see the internal structures, and to separate the structures, if necessary, for easier identification or for making drawings. After inspection, the genitalia are stored in a microvial (glass or plastic) on the pin below the specimen from which they came - care must be taken to la b e l th e g e n ita lia and the specimen from which they came so that they can always be associated. A few workers, mostly Europeans, glue the genitalia to a small piece of thickened paper for storage;•this method ob scures many characters and makes the genitalia extremely d iffi cult to work with, especially when the genitalia were carelessly placed on th e paper.

ILLUSTRATIONS Drawings were made on graph paper with th e use of a grid in the eyepiece of a binocular microscope, traced onto 2-ply Bristol Board and inked over with India ink. Once the individual draw ings were arranged on pieces of illustration board, they were 5 MCZC ** Museum of Comparative Zoology, Harvard University, Cambridge. MHHN - Musee Hongrois dfHistoire Naturelle, Budapest. NHMW - Naturhistorisches Museum Wien, Vienna. OSUO - Oregon State University Collection, Corvallis. RI£I - Rauno Linnavuori Collection of Insects, Somersoja, Finland. SEMC - Snow Entomological Museum Collection, University of Kansas, Lawrence. SMNK - Staatlische Museum fur Naturkunde, Stuttgart. TAMU - Texas A. 6 M. University, College Station. UHCI - University of Hamburg Collection of Insects, Hamburg. UMMZ - University of Michigan Collection of Insects, Ann Arbor. USNM - United States National Museum Collection of Insects, Washington. USUC - Utah S ta te University C ollection, Logan. SOURCES OF MATERIAL EXAMINED

The following Is a list of institutions and individuals from whom material was borrowed, and the abbreviations used to repre sent them throughout this revision. Also included are two col lections (EDBC, RLCI) from which no material was borrowed, but which are mentioned in the revision as containing type material. Most abbreviations are those set up by Arnett and Samuelson (1969), but the following abbreviations were coined for those collections not included in their lis t: DMDC, EDBC, HOCI, MHHN, NHMW, RLCI, SMNK, UHCI, USUC.

AMNH - American Museum of Natural History, New York. CISC - California Insect Survey Collection, University of California, Berkeley. CNCI - Canadian National Collection of Insects, Ottawa. DMDC - Dwight M. DeLong C ollection, Ohio S tate U niversity, Columbus. EDBC - Elmer D. Ball Collection, University of Arizona, Tucson. FMNH - Field Museum of Natural History, Chicago. FSCA - Florida State Collection of Arthropods, Gainesville. HOCI - Herbert Osborn Collection of Insects, Ohio State Univer s ity , Columbus. ICCM - Carnegie Museum Insect Collection, Pittsburgh. KSUC - Kansas State University Collection, Manhattan. 2 of the same species are not easily recognizable as such. Written descriptions, especially of general appearance, were often so brief as to be of little value. The purpose of this revision is to enable taxonomists to identify Osbornellus specimens more easily and with a greater de gree of certainty by providing detailed, standardized descrip tions and figures. The key to species will also be of help. Some females will not fit through the key - it is based on gener al appearance wherever possible, but must necessarily resort to characters of the male genitalia in many places. No biological data were included in this revision, but much can be found by referring to the papers listed before each species description and to the labels associated with the specimens themselves. The genus Osbornellus has been found throughout the New World, from Canada to Argentina; i t is obvious, however, from the richness of certain collecting spots, especially-in Central and South Anerica, that many species remain undiscovered. INTRODUCTION

The genus Osbornellus was described by Ball In 1932; Scaphoideus auronitens Provancher was designated the type spe cies. Ball included four other Scaphoideus species in the new genus, and described two new species a t the same time. By 1937, the genus had grown to eleven species, and Beamer added th irte e n more in his Osbornellus revision of that year. Many species were added in the 1940fs, most by DeLong and his associates; three species from the West Indies were described in the 1950fs. Linnavuori added several South American species in his 1959 revi sion of Neotropical Deltocephalinae. DeLong described many new * Mexican and South American species in his three 1976 papers. This revision includes 94 species, of which 22 are new. The genus was sorely in need of review and revision. Forty- « eight species had been added to it since the last revision by Beamer in 1937. Early species (before 1937) had been described without reference to the male genitalia, on which all descrip tions are now based. Many species had been described without accompanying figures, most notably during the war years of the early 1940's. Beamer's 1937 revision included photographs of the male genitalia, which are of little taxonomic value. Drawing styles of the various authors differ so much that often drawings Osbornellus reyersus DeLong 225. Female 7th sternite, ventral view (p. 376). Osbornellus affinis (Osborn) 226. Same (p. 378). Osbornellus castaneus n. sp. 227. Same (p. 378). Osbornellus obscurus n. sp. 228. Same (p. 378). Osbornellus flavibrunneus n. sp. 229. Same (p. 378). Osbornellus colossus n. sp. 230. Same (p. 378). Osbornellus borealis DeLong and Mohr 231. Same (p. 378). Osbornellus stiormatus n. sp. 232. Same (p. 378). Osbornellus sinuatus n. sp. 233. Same (p. 378). Osbornellus anorustatus DeLong 234. Same (p. 378). Osbornellus fasciatus Metcalf 235. Same (p. 378). Osbornellus oilvus n. sp. 236. Same (p. 378).

xxv Osbornellus multivittatus n. sp. 212. Aedeagus, ventral view (p. 374). 213. Same, lateral view (p. 374). Osbornellus fulvomaculatus fulvomaculatus (Osborn) 214. Female 7th sternite, ventral view (p. 376). Osbornellus cruerreroensis n. sp. 215. Same (p. 376). Osbornellus tripartitus DeLong 216. Same (p. 376). Osbornellus auronitens (Provancher) 217. Same (p* 376). Osbornellus limosus DeLong 218. Same (P» 376). Osbornellus rotundus Beamer 219. Same (p. 376). Osbornellus vioinus Linnavuori and Heller 220. Same (p. 376). Osbornellus hvalinus (Osborn) 221. Same (p. 376). Osbornellus pullicralbus n. sp. 222. Same (p. 376). Osbornellus compressus Linnavuori 223. Same (p. 376). Osbornellus circulus DeLong and Martinson 224. Same (p. 376).

xxiv Osbornellus alveus DeLong and Martinson 195. Aedeagus, ventral view (p. 372), 196. Same, la te r a l view (p. 372). Osbornellus sinuatus n. sp. 197. Aedeagus, ventral view (p. 372). 198. Same, la te r a l view (p. 372). Osbornellus ancrustatus DeLong 199. Aedeagus, v en tral view (p* 372). 200. Same, la te r a l view (p. 372), Osbornellus crocus n. sp. 201. Aedeagus, ventral view (p. 372). 202. Same, la te r a l view (p. 372). 203. Style, ventral view (p. 372). Osbornellus fasciatus Metcalf 204. Aedeagus, ventral view (p. 372). 205. Same, lateral view (p. 372). Osbornellus crilvus n. sp. 206. Aedeagus, ventral view (p. 374). 207. Same, la te r a l view (p. 374). Osbornellus bimarcrinatus bimarginatus (DeLong) 208. Aedeagus, v e n tra l view (p. 374). 209. Same, lateral view (p. 374). Osbornellus bimarginatus montanus Caldwell and Martorell 210. Aedeagus, ventral view (from Caldwell and Martorell 1952) (p. 374). 211. Same, la te r a l view (from Caldwell and M artorell 1952) (p. 374). x x iii Osbornellus omani Beamer 178. Aedeagus, ventral view (p. 370). 179. Same, lateral view (p. 370). Osbornellus unus n. sp. 180. Aedeagus, ventral view (p. 370). 181. Same, lateral view (p. 370). Osbornellus stigmatus n. sp. 182. Aedeagus, ventral view (p. 370). 183. Same, lateral view (p. 370). Osbornellus leucostiomatus n. sp. 184. Aedeagus, ventral view (p. 370). 185. Same, lateral view (p. 370). Osbornellus pallidus Beamer 186. Aedeagus,. ventral view (p. 370). 187. Same, lateral view (p. 370). Osbornellus o^arus Beamer 188. Aedeagus, ventral view (p. 370). 189. Same, lateral view (p. 370). * Osbornellus flexuosus Linnavuori 190. Aedeagus, ventral view (p. 370). 191. Same, lateral view (p. 370). Osbornellus mexicanus (Osborn) 192. Aedeagus, ventral view (p. 372). 193. Same, lateral view (p. 372). Osbornellus infuscatus Linnavuori 194. Aedeagus, lateral view (p. 372). x x ii 160. Same; lateral view (p. 366). Osbornellus albocinctus DeLong 161. Aedeagus, ventral view (p. 366). 162. Same, lateral view (p. 366). Osbornellus lineatus Beamer 163. Aedeagus, ventral view (p. 366). 164. Same, lateral view (p. 366). Osbornellus sc a la ris (Van Duzee) 165. Aedeagus, ventral view (p. 366). 166. Same, lateral view (p. 368). Osbornellus grandis DeLong 167. Aedeagus, ventral view (p. 368). 168. Same, lateral view (p. 368). Osbornellus remotus DeLong and Martinson 169. Aedeagus, ventral view (p. 368). 170. Same, lateral view (p. 368). Osbornellus spinosus DeLong 171. Aedeagus, ventral view (p. 368). 172. Same, lateral view (p. 368). 173. lygofer, lateral view (spination omitted) (p. 368). Osbornellus rcp?us DeLong 174. Aedeagus, ventral view. (p. 368). 175. Same, lateral view (p. 368). Osbornellus rubellus DeLong 176. Aedeagus, ventral view (p. 370). . 177. Same, lateral view (p. 370). xxi Osbornellus apicatus DeLong 143. Aedeagus, lateral view (from DeLong 1941b) (p. 364). Osbornellus chromatus n. sp. 144. Aedeagus, ventral view (p. 364). 145. Same, lateral view (p. 364). Osbornellus ritanus Ball 146. Aedeagus, ventral view (p. 364). 147. Same, lateral view (p. 364). Osbornellus cvrtocaulus n. sp. 148. Aedeagus, ventral view (p. 364). 149. Same, lateral view (p. 364). 150. Style, ventral view (p. 364). Osbornellus appressus DeLong 151. Aedeagus; ventral view (p« 364). 152. Same, lateral view (p. 364). Osbornellus consors (Uhler) 153. Aedeagus, ventral view (p. 364). 154. Same, lateral view (p. 366). * Osbornellus fumidus Beamer 155. Aedeagus, ventral view (p. 366). 156. Same, lateral view (p. 366). Osbornellus borealis DeLong and Mohr 157. Aedeagus, ventral view (p. 366). 158. Same, lateral view (p. 366). Osbornellus capiptus n. sp. 159. Aedeagus, ventral view (p. 366). xx Osbornellus alatus Beamer 126. Aedeagus, ventral view (p. 360). , 127. Same, lateral view (p. 360). Osbornellus decorus Beamer 128. Aedeagus, ventral view (p. 360). 129. Same, lateral view (p. 360). Osbornellus spicatus Beamer 130. Aedeagus, ventral view (p. 362). 131. Same, lateral view (p. 362). Osbornellus corniqer Beamer 132. Aedeagus, ventral view (p. 362). 133. Same, lateral view (p. 362). Osbornellus bifasoiatus Beamer 134. Aedeagus, ventral view (p. 362). 135. Same, lateral view (p. 362). Osbornellus tenuis Beamer 136. Aedeagus, ventral view (p. 362). 137. Same, lateral view (p. 362). « Osbornellus aoricapitus n. sp. 138. Aedeagus, ventral view (p. 362). 139. Same, lateral view (p. 362). Osbornellus albolineus DeLong 140. Aedeagus, lateral view (from DeLong 1941b) . 362). Osbornellus icmavus Ball 141. Aedeagus, ventral view (p. 362). 142. Same, lateral view (p. 364). xix Osbornellus trifrustrus DeLong and Martinson 108. Aedeagus, ventral view (p. 356). 109. Same, lateral view (p. 356). Osbornellus colossus n. sp. 110. Aedeagus, ventral view (p. 356). 111. Same, lateral view (p. 356). Osbornellus excavatus DeLong and Martinson 112. Aedeagus, ventral view (p. 356). 113. Same, lateral view (p. 356). 114. Eygofer, lateral view (spination emitted) (p. 358). Osbornellus furoillatus DeLong 115. Aedeagus, ventral view (p. 358). 116. Same, lateral view (p. 358). 117. lygofer, lateral view (spination omitted) (p, 358). 118. Plate, ventral view (p. 358). Osbornellus libratus DeLong 119. Aedeagus, ventral view (p. 358). 120., Same, lateral view (p. 358). Osbornellus lamellaris Linnavuori 121. Aedeagus, lateral view (from Linnavuori 1959) (p. 360) Osbornellus alaudus DeLong 122. Aedeagus, ventral view (p. 360). 123. Same, lateral view (p. 360). Osbornellus ecuadoricus Linnavuori 124. Aedeagus, ventral view (p. 360). 125. Same, lateral view (p. 360). x v iii 90. Same, lateral view (p* 352). 91. lygofer, lateral view (spination omitted) (p. 354). Osbornellus affinis (Osborn) 92. Aedeagus, ventral view (p. 354). 93. Same, lateral view (p. 354). Osbornellus castaneus n. sp. 94. Aedeagus, ventral view (p. 354). 95. Same, lateral view (p. 354). Osbornellus obscurus n. sp. 96. Aedeagus, ventral view (p. 354). 97. Same, lateral view (p. 354). Osbornellus flavibrunneus n. sp. 98. Aedeagus, ventral view (p. 354). 99. Same, lateral view (p. 354). Osbornellus capitatus DeLong and Knull 100. Aedeagus, ventral view (p« 354). 101. Same, lateral view (p. 354). Osbornellus salsus DeLong 102. Aedeagus, ventral view (p. 356). 103. Same, lateral view (p. 356). Osbornellus ater Beamer 104. Aedeagus, ventral view (p. 356). 105. Same, lateral view (p. 356). Osbornellus filamentus DeLong and Beery 106. Aedeagus, ventral view (p. 356). 107. Same, lateral view (p. 356). xvii 71. Same, lateral view (p. 348). 72. lygofer, lateral view (spination omitted) (p. 348). Osbornellus eurvcephalus n. sp. 73. Aedeagus, v e n tra l view (p. 350). 74. Same, lateral view (p. 350). 75. lygofer, lateral view (spination omitted) (p* 350). Osbornellus linnavuori DeLong 76. Aedeagus, ventral view (from Linnavuori 1959) (p- 350). 77. Same, lateral view (from Linnavuori 1959) (p. 350). Osbornellus compressus Linnavuori 78. Aedeagus, ventral view (p. 350). 79. Same, lateral view (p. 350). Osbornellus lunus DeLong 80. Aedeagus, ventral view (p. 350). 81. Same, lateral view (p. 350). 82. lygofer, lateral view (spination omitted) (p. 350). Osbornellus pandus DeLong 83. Aedeagus, v e n tra l view (p. 352). 84. Same, lateral view (p. 352). 85. lygofer,- lateral view (spination omitted) (p. 352). Osbornellus circuius DeLong and Martinson 86. Aedeagus, ventral view (p. 352). 87. Same, lateral view (p. 352). 88. lygofer, lateral view (spination omitted) (p. 352). Osbornellus reversus DeLong 89. Aedeagus, ventral view (p. 352). xvi 53. Plate, ventral view (p. 344). Osbornellus pusillus n. sp. 54. Aedeagus, ventral view (p. 344). 55. Same, lateral view (p. 346). Osbornellus vicinus Linnavuori and Heller 56. Aedeagus, ventral view (p. 346). 57. Same, lateral view (p. 346). 58. lygofer, lateral view (spination omitted) (p. 346). Osbornellus hvalinus (Osborn) 59. Aedeagus, ventral view (p. 346), 60. Same, lateral view (p. 346). Osbornellus pullicralbus n. sp. 61. Aedeagus, ventral view (p. 346). 62. Same, lateral view (p. 346). Osbornellus antlerus DeLong and Martinson 63. Aedeagus, v en tral view (p. 346). 64. Same, lateral view (p. 348). Osbornellus spinellus DeLong and Martinson « 65. Aedeagus, ventral view (p. 348). 66. Same, lateral view (p. 348). 67. lygofer, lateral view (spination omitted) (p. 348). Osbornellus respublicanus (Berg) 68. Aedeagus, ventral view (p. 348). 69. Same, lateral view (p. 348). Osbornellus hamatus DeLong and Martinson 70. Aedeagus, ventral view (p. 348). Osbornellus limosus DeLong 35. Aedeagus, ventral view (p. 342). 36. Same, lateral view (p. 342). 37. Style, ventral view (p. 342). Osbornellus rotundus Beamer 38. Aedeagus, ventral view (p. 342). 39. Same, lateral view (p. 342). 40. Style, ventral view (p. 342). Osbornellus cirrhosticrmatus n. sp. 41. Aedeagus, ventral view (p. 342). 42. Same, lateral view (p. 342). Osbornellus Gibus DeLong and Martinson 43. Aedeagus, lateral view (from DeLong and Martinson 1976b) (p. 342). Osbornellus asperus DeLong and Martinson 44. Aedeagus, ventral view (p. 342). 45. Same, lateral view (p. 342). 46. Elate, ventral view (p. 344). Osborne’llu s spiniloba Linnavuori and H eller 47. Aedeagus, ventral view (p. 344). 48. Same, lateral view (p. 344). 49. Plate, ventral view (p. 344). Osbornellus unicolor (Osborn) 50. Aedeagus, ventral view (p. 344). 51. Same, lateral view (p. 344). 52. lygofer, lateral view (most spination omitted) (p. 344).

xiv 16. Same, lateral view (p. 338). 17. lygofer, lateral view (spination omitted) (p. 338) ' Osbornellus runiceus DeLong 18. Aedeagus, ventral view (p. 338). 19. Same, lateral view (p. 338). 20. Plate, ventral view (p. 338). Osbornellus trirartitus DeLong 21. Aedeagus, ventral view (p. 338). 22. Same, lateral view (p. 338). 23. lygofer, lateral view (spination omitted) (p. 340) 24. Style, ventral view (p. 340). Osbornellus bellus n. sp. 25. Aedeagus, ventral view (p. 340). 26. Same, lateral view (p. 340). 27. Style, ventral view (p. 340). Osbornellus rurrens DeLong 28. Aedeagus, lateral view (from DeLong 1941b) (p. 340 Osbornellus anonae Linnavuori « 29. Aedeagus, ventral view (p. 340). 30. Same, lateral view (p. 340). Osbornellus auronitens (Provancher) 31. Aedeagus, ventral view (p. 340). 32. Same, lateral view (p. 340). 33. lygofer, lateral view (spination omitted) (p. 340) 34. Style, ventral view (p. 342).

x iii LIST OF FIGURES

Osbornellus sp. (generalized) 1. Dorsal view, showing a common type of color pattern (p. 330). 2. Right elytron (p. 332). 3. Tip of male abdomen, ventral view (p. 334). 4. Tip of female abdomen, v e n tra l view (p. 334). Osbornellus fulvomaculatus fulvomaculatus (Osborn) 5. Aedeagus, ventral view (p. 336). 6. Same, lateral view (p. 336). 7. Style, ventral view (p. 336). Osbornellus maemus n. sp. 8. Aedeagus, ventral view (p. 336). 9. Same, lateral view (p. 336). 10.* Plate, ventral view (p. 336). Osbornellus parallelus DeLong and Xnull „ 11. Aedeagus, ventral view (p. 336). 12. Same, lateral view (p. 336). 13. lygofer, lateral view (spination omitted) (p. 336). 14. Plate, ventral view (p. 336). Osbornellus querreroensis n. sp. 15. Aedeagus, ventral view (p. 338). x ii 0. qlveus DeLong and Martinson...... 293 0. sinuatus n. sp...... 296 0. anqustqtus DeLong...... 299 0. crocus n. sp...... 302 0. fasciatus Metcalf ...... 305 0. crilvus n. sp...... 3 0 8 0, bimarcrinatus bimarcrinatus (DeLong)...... 311 0. bimarcrinatus montanus Caldwell and Martorell...... 314 0. multivittatus n. sp ...... 316 LITERATURE CITED...... 318 FIGURES...... 329

x i 0. chromatus n. sp...... »...... 210 0. ritanus Ball...... 213 0. cvrtocaulus n. sp ...... 216 2* appressus DeLong...... 218

Q* consors (Uhler)...... 221 0. fumidus Beamer...... 227 0. borealis DeLong and Mohr...... 2 3 0 0. camptus n. sp ...... 234 0. nigrocinctus DeLong...... 236 0. albocinctus DeLong...... 238 0. lineatus Beamer...... 241 0. scalaris (Van Duzee)...... 244 0. grand is DeLong...... 248 remotus DeLong and M artinson...... 251 0. spinosus DeLong...... 254 0. rqrus DeLong...... 257 0. rubellus DeLong...... 260 0. omani Beamer...... 263 0. unus n. sp...... 266 0. sticunatus n. sp...... 268 0. leuGOstigmatus n. sp ...... 271 0. pallidus Beamer...... 274 0. elarus Beamer ...... 278 0. flexuosus Linnavuori...... 283 0. mexicanus (Osborn)...... 286 infuscatus Linnavuori...... 290 x 0. flavibrunneus n. sp...... 1 4 4 £• capitatus DeLong and Knull...... * ...... 147 0. salsus Deliong...... 149 £• a te r Beamer...... 152 0. filamentus DeLong and Beery...... 155 £• trifrustrus DeLong and Martinson...... 158 0. curvatus Beamer ...... 160 0. colossus n. sp...... 162 0. excavatus DeLong and Martinson...... 165 0. furcillatus DeLong...... 167 0. libratus DeLong...... 170 0. lamellaris Linnavuori...... 173 0. trimaculatus DeLong...... 175 0. alaudus DeLong...... 177 0. acuminatus DeLong...... 180 0. ecuadoricus Linnavuori...... 182 0. alatus Beamer ...... 184 0. decorus Beamer...... 187 O. s pic at us Beamer ...... 190 0. corniqer Beamer...... 193 0. b ifasc ia tu s Beamer ...... 196 0. tenuis Beamer...... 199 0. acricapitus n. sp...... 202 0. albolineus DeLong...... 204 0. icmavus Ball ...... 206 0. apicatus DeLong...... 208 ix 0. limosus DeLong...... 82 0. rotundus Beamer...... 85 0. cirrhosticnnatus n. sp...... 88 0. cibus DeLong and Martinson...... 90 2* per us DeLong and Martinson...... 9 2 0. spiniloba Linnavuori and H eller...... 94 0. unioolor (Osborn)...... 96 2* pusillus n. sp ...... 99 0. vicinus Linnavuori and Heller...... 101 2* hvalinus (Osborn)...... 103 2*. pullioalbus n. sp ...... 106 0. antlerus DeLong and Martinson...... 108 0. spinellus DeLong and Martinson...... 110 0. res public anus (Berg) ...... 112 0. hamatus DeLong and M artinson...... 114 2* eurvcephalus n. sp ...... 116 0. linnavuori DeLong...... 118 0. compressus Linnavuori...... 120 0. lunus DeLong...... 123 0. pandus DeLong...... 125 0. circulus DeLong and M artinson...... 127 reversus DeLong...... 129 0. affinis (Osborn)...... 132 2* castaneus n. sp...... 136 0. obscurus n. sp ...... 139 2* tumidus DeLong...... 142 v i i i TABLE OF CONTENTS Page ACKNOWLEDGEMENTS...... i i VITA...... v LIST OF FIGURES...... x i i INTRODUCTION...... 1 SOURCES OF MATERIAL EXAMINED...... 3 METHODS AND MATERIALS...... 5 GENUS OSBORNELLUS BALL...... 8 CHECKLIST OF OSBORNELLUS BALL...... I I KEY TO SPECIES OF OSBORNELLUS BALL...... 18 SPECIES TREATMENT...... 49 0. fulvomaculatus fu 1 vomaculatus (Osborn) ...... 49 O. fulvomaculatus unilineatus Linnavuori...... 53 0. maomus n. sp...... 55 0. p arallelu s DeLong andKnull ...... 57 0. ouerreroensis n. sp...... 59 0. puniceus DeLong...... 62 0. tr ip a r t it us DeLong...... 65 0. bellus n. sp...... 68 0. rurrens DeLong...... 70 0. anonae Linnavuori...... 72 auronitens (Provancher)...... 75 v ii "A New Species of Mexican Texananus (Homoptera: Cicadellidae)." Ent. News 84: 202-204. 1973. "A New Genus, Metaceohalus. and New Species of Bolivian Leafhop per (Homoptera: Cicadellidae)." Ent. News 84: 225-226. 1973. "The Genus Maricaona (Homoptera: Cicadellidae)." Ent. News 84: 251-252. 1973. "New Species of Chlorotettix (Homoptera: Cicadellidae) from Argentina, Bolivia, Brazil and Mexico." Jour. Kans. Ent. Soc. 47(2): 261-267. 1974. "A New Genus, Ancudana. and a New Species of Chilean Leafhopper Belonging to the Deltocephalinae (Homoptera: Cicadellidae)." Ohio Jour. Sci. 74(4): 261-263. 1974. "Five New Species of Bolivian Osbornellus (Homoptera: Cicadel lidae)." Jour. Kans. Ent. Soc. 49(3): 429-432. 1976. "New Species of Mexican Osbornellus (Homoptera: Cicadellidae)." Jour. Kans. Ent. Soc. 49(4): 583-588. 1976.

vi VITA

January 12, 1949...... Born - Cleveland, Ohio 1971 ...... B.S. cum laude and with distinc tion in zoology, The Ohio State U niversity, Columbus, Ohio 1974 ...... M.S., The Ohio State University, Columbus, Ohio 1974-1976 ...... Teaching Associate, Introductory Biology Program and Department of Entomology, The Ohio S tate Uni v ersity , Columbus, Ohio 1977 ...... Ph.D. Candidate, The Ohio State U niversity, Columbus, Ohio

PUBLICATIONS (all as junior author to D.M. DeLong)

"Studies of the Gyponinae (Homoptera: Cicadellidae): Fourteen New Species of Gypona from C entral and South America." Ohio Jour. Sci. 72: 161-170. 1972. "A New Genus, Desertana, and Two New Species of Chilean Leafhop pers Belonging to the Deltocephalinae (Homoptera: Cicadelli dae). " Ohio Jour. Sci. 73: 125-127. 1973. "The Genus Knullana (Homoptera: Cicadellidae), with the Descrip tion of a New Mexican Species." Jour. Kans. Ent. Soc. 46: 151- 154. 1973. "Two New Species of Polvamia (Homoptera: Cicadellidae) from Honduras and C hile." Ohio Jour. S ci. 73: 149-151. 1973. "Studies of the Gyponinae (Homoptera: Cicadellidae): Six New Species of Ponana from C entral and South America. Ohio Jour. Sci. 73: 176-180. 1973. My sisters, Linda and Beryl - for suffering with me through many t r i a l s and trib u la tio n s, and fo r a l l th e in te re s t and en couragement that they have given me.

Most of all I thank my parents, Earl and Barbara Martinson, who have seen me through 20 years of schooling; their undying love, confidence and support have been with me always, and I love them very much.

iv USNM - Dr. James P. Kramer USUC - Dr. Wilford J . Hanson

The following persons deserve special recognition for making this project possible:

Dr. Dwight M. DeLong - his collection was the basis for this dissertation, and he was always happy to help in any way he could, from cheering me up with a story to giving me the benefit of his 60+ years of experience with leafhoppers; I couldn’t have done it without him, and I sincerely thank him for everything.

Dr. Charles A. Triplehorn - for being my friend as well as my adviser all these years; for his steadying influence during oral examinations and other times of trouble; for finally letting me on the Zoo-Ent bowling team and never getting mad, no matter what my scores; fo r bringing me back from Mexico a liv e ; fo r sharing so many things with me; I can never thank him enough.

All the faculty, staff and students of the Entomology De- partment of The Ohio State University - I'm lucky to be surround ed by so many friends.

* Inhabitants of Room 373, B.6Z. Building (past and present) - for giving me such a happy atmosphere in which to work; their friendship over the years has been heartwarming - may we always keep in touch. I also thank Dr. Barry D. Valentine for giving me office space for all these years.

i i i I

ACKNOWLEDGEMENTS

I gratefully acknowledge the following persons and tutions for the loan of material from their collections 3 for key to abbreviations):

AMNH - Dr. Randall T. Schuh

CISC mm Dr. Jerry A. Powell CNCI - Dr. K.G.A. Hamilton DMDC - Dr. Dwight M. DeLong FMNH - Dr. Eric H. Smith FSCA - Dr. Frank W. Mead HOCI - Dr. Charles A. Triplehorn ICCM - Dr. George Wallace

* KSUC - Dr. H. Derrick Blocker

MCZC - Ms. Marilyn M. Pearce MHHN - Dr. A. Soos

NHMW - Dr. A. Kaltenbach OSUO Dr. Paul W. Oman SEMC - Dr. Peter D. Ashlock, Dr. George W. Byers

SMNK - Mr. F. H eller

TAMU •* Dr. Horace R. Burke, Mrs. Sammie J . M erritt UHCI - Dr. H, Strumpel UMMZ - Dr. Thomas E. Moore i i REVISION OF THE GENUS OSBORNELLUS BALL (HOMOFTERA: CICADELLIDAE)

DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio S tate U niversity

By Candace Martinson, B .S., M.S. «

*****

The Ohio S tate U niversity 1977 *

Reading Committee: Approved by Dr. Charles Ai Triplehorn Dr. Donald J . Borror Dr, Robert P. Holdsworth Adviser Department of Entomology 77 - 31,930

MARTINSON, Candace, 1949- REVISION OF THE GENUS OSBORNELLUS BALL (HOMOPTERA: CICADELLlHKET.

The Ohio State U n ive rsity , P h .D ., 1977 Entomology

University Microfilms Internationalt Ann Arbor, Michigan 48106

This material was producad from a microfilm copy of the original documant. While the most advanced technological means to photograph and reproduce this document have been used, the quality is heavily dependant upon the quality of the original submitted.

The following explanation of techniques is provided to help you understand markings or patterns which may appear on this reproduction.

1. The sign or “target" for pages apparently lacking from the documant photographed is “Missing Page(s)". If it was possible to obtain the missing page(s) or section, they are spliced into the film along with adjacent pages. This may have necessitated cutting thru an image and duplicating adjacent pages to insure you complete continuity.

2. When an image on the film is obliterated with a large round black mark, it is an indication that the photographer suspected that the copy may have moved during exposure and thus cause a blurred image. You will find a good image of the pega in the adjacent frame.

3. Whan a map, drawing or chart, etc., was part of the material being photographed the photographer followed a definite method in "sectioning" the material. It is customary to begin photoing at the upper left hand corner of a large sheet and to continue photoing from left to right in equal sections with a small overlap. If necessary, sectioning to continued again - beginning below the first row and continuing on until complete.

4. The majority of users indicate that the textual content is of greatest value, however, a somewhat higher quality reproduction could be made from "photographs" if essential to the understanding of the dissertation. Silver prints of "photographs" may be ordered at additional charge by writing the Order Department, giving the catalog number, title, author and specific peges you wish reproduoad.

6. PLEASE NOTE: Some pegM may have indistinct print. Filmed as received.

University Microfilms International 300 North Zeeb Road Ann Arbor, Michigan 48106 USA SL John's Road, Tyler's Green High Wycombe, Bucks, England HP10 8HR