Scutum Black. Hemelytra Very Dark Brown, Embolium Except Apically, Cuneus Except Red- Dish Spot on Apex, Pale Translucent

146 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vtol. 22, Art. I

General color dark fuscous to black with area bordering apex of cuneus; veins pale. genae, apices of juga, median line on frons, Clavus and corium clothed with pale to sil- median line and slender area along basal very, somewhat silky pubescence. Ventral margin of pronotum, lateral margins and surface white to yellowish; a broad, lateral, apical two-thirds of median line of scutel- longitudinal stripe on thoracic pleura and lum, thoracic sternum, and lower half of sides of venter, reddish brown to black. Legs abdominal venter except on genital segment, pale; hind femora with two subapical red- coxae, basal halves of femora, and tibiae -ex- dish brown annuli; tibial spines yellowish; cept base and apex, pale to yellowish; cuneus apical segment of each tarsus fuscous. pale translucent, inner half reddish, apex FEMALE.-Length .5.90, width 2.30. Very dark red to almost black. similar to male in color and pubescence, but FEMALE.-Length 6.00, width 2.40; very pale area on disk of pronotum broader. similar to male, but with dark areas smaller. FOOD PLANT.-Peach-leaved. willow (Sa- General color yellowish to brownish, dark- lix amygdaloides). ened with fuscous; head yellowish with KNOWN DISTRIBUTION.-Illinois, Michi- bases of juga, and broad mark on frons gan, Minnesota, Ontario. either side of median line, black; pronotum Illinois Record.-GALENA: June 30, brownish, a broad black line at either lateral 1932, Dozier & Mohr, 1 , 1 9. margin and a black ray behind callus on either side of pale median line; hemelytra Lygidea mendax Reuter rather uniformly fusco-brownish; hind femora with very dark brown bands before Apple Redbug, fig. 158. apices, anterior face more or less black on apical half. Lygidea mendax Reuter (1909, p. 47). FOOD PLANT.-Black w ill o w (Salix While not as yet collected in Illinois, this nigra). bright, orange red species undoubtedly will KNOWN DISTRIBUTION.-Illinois, Michi- be found along the Rock River and vicinity. gan, New York, Nova Scotia, Ontario, Pennsylvania. Illinois Records.-Eleven males and 11 .1 1 females, taken June 3 to July 5, are from Champaign, Chicago, Grand Detour, Homer, Kampsville, Keithsburg, Mount Carmel, Rockford, Urbana, Warsaw, White Heath. Lygidea salicis Knight Lygidea salicis Knight (1939a, p. 22). MALE.-Length 5.60, width 2.20. Ros- trum pale, apex black. Antennae with first segment black, slender apex pale; second fusco-brownish, basal one-fourth black, pubescence rather short and recumbent; third fourth almost black. Pronotum fuscous; VOYR. with disk punctate, transversely rugulose; black, collar except behind eyes, median line of disk, two blotches behind outer halves of calli, disks of calli, narrow area along basal margin, and dorsal margin, pale; ventral one-third of propleura pale. Scutellum pale with a wedge-shaped, very dark brown mark on either side of median line, mesoscutum black. Hemelytra very dark brown, embolium except apically, cuneus except reddish spot on apex, pale translucent. Mem- brane uniformly dark fuscous, less dark on Fig. 158.-Lygidea mendax, 9. September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 147

This assumption is based on the fact that tum, except calli and basal angles, femora, mendax has been collected near Davenport and sometimes cuneus, red; head yellowish and Bentonsport, Iowa. Occurs on haw- to red; tylus usually darker. thorn (Crataegus sp.), American crabapple FEMALE.-Fig. 159. Length 5.60, width (Pyrus coronaria), cultivated apple (Pyrus 2.80. More robust than male and usually malus) and to some extent on cultivated with red areas broader; pronotum, scutel- quince (Cydonia oblonga). This insect is lum, cuneus, femora and ventral surface of now regarded as a serious pest on apples body orange to red; basal area of corium us- in New York, Pennsylvania and Michigan. ually pale; tibiae and second antennal seg- Known from Connecticut, Indiana, Iowa, ment largely pale. Maine, Michigan, New York, Nova Scotia, FOOD PLANT.-Post oak (Quercus stel. Ohio, Ontario, Pennsylvania. lata), according to Dr. H. G. Johnston. KNOWN DISTRIBUTION.- Arizona, Illi- Neocapsus Distant nois, Mississippi, Missouri, North Carolina, Oklahoma, Texas; Mexico. Neocapsus cunea-tus Distant Illinois Records.-DUBOIS: May 15, 1917, 1 a ; May 22, 1917, 1 ; May 23, Neocapsus cuneatus Distant (1893, p. 438). 1917, 2 &, 7 !; May 24, 1917, 4 A, 3 !. MALE.-Length -4.80, width 2.60. Head width 1.17, vertex 0.52. Rostrum, length 1.73, reaching to apices of middle coxae. Platylygus Van Duzee Platylygus luridus (Reuter) Lygidea rubecula var. lurida Reuter (1909, p. 46). MALE.-Fig. 160. Length 6.50, width 2.40. Minutely pubescent; dorsum practi-

INW

Fig. 159.- Neocapsus cuneatus, 9. Antennae very short, black, with fine pubescence; first segment, length 0.47; second 1.38, cylindrical, slightly more slender near base; third, 0.56; fourth, 0.35. Pronotum, length 1.25, width at base 2.25; finely, shal- lowly punctate. Scutellum transversely rugulose, orange red, rarely partly black. Dorsum practically glabrous; hemelytra with minute pubescence in some of the shal- low punctures. General color black; prono- Fig. 160.-Platylygus luridus, de. 148 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. 1 cally glabrous. General color pale yellow- 6. Tibiae uniformly pale greenish, with- ish brown; hemelytra translucent; collar out bands at base; eyes large; color and tip of scutellum pale to white; apex and of body chiefly green. .apicalis, p. 154 inner half of cuneus, brachium, disk of Tibiae spotted, often with red and scutellum, apices of femora, and area on black bands at base ...... 7 venter, somewhat reddish; third and fourth 7. Rostrum almost, but not quite, reach- antennal segments infuscated; apex of ros- ing tips of hind coxae; abdomen uni- trum piceous; membrane fumate or pale formly green; area along claval vein brownish. and spot on apical area of corium FEMALE.-Length 7.00, width 2.70; more fuscous ..... elisus, p. 152 robust than male, but otherwise very simi- Rostrum attaining or slightlv exceed- lar in structure and coloration. ing apices of hind coxae; abdomen FOOD PLANT.-White pine (Pinus stro- marked with black; hemelytra of bus). The nymphs are yellowish with -a female uniformly pale, of male tinge of brownish, and thus very closely darkened with red and black...... match the color of the bud scales of their ...... hesperus, p. 151 host plant. 8. Hemelytra black and irregularly mot- KNOWN DISTRIBUTION. -Illinois, New tled with greenish yellow; head and Hampshire, New York. anterior part of pronotum yellowish Illinois Record. -NORTHERN ILLINOIS: green, usually with two black rays 1 9. behind each callus......

...... plagiatus, p. 153 Hemelytra sometimes dark but not Lygus Hahn mottled with pale spots; head and pronotum not colored as above.... 9 KEY TO SPECIES 9. Length 6.50-7.30; nearly glabrous, 1. Length of second antennal segment strongly shining. . vanduzeei, p. 150 less than width of head; body Length 4.80-6.30; distinctly pubes- ovate, robust, yellowish brown to cent...... 10 dark reddish brown, darkened with 10. Second antennal segment three times fuscous ..... rubicundus, p. 153 as long as first segment; frons uni- Length of second antennal segment formly yellowish, without black greater than width of head ...... 2 lines; length 6.00-6.30.. frisoni, p. 151 than 2. Basal carina of vertex lacking in mid- Second antennal segment less dle, visible only at corners of eyes; three times as long as first segment; green or greenish yellow, preserved frons with median line dark; length 5.00-5.50 .... 148 specimens fading to dull yellowish; oblineatus, p. Y-shaped fuscous mark formed by anal areas of membranes; usually Lygus oblineatus (Say) with a longitudinal cloud distad of Tarnished Plant Bug areoles...... pabulinus, p. 153 Basal carina of vertex entire; various- Capsus oblineatus Say (1832, p. 21). ly colored 3 This species has passed in.American liter- 3. Rostrum just attaining posterior mar- ature under the name Lygus pratensis (Lin- gins of middle coxae; scutellum naeus) for many years. It differs, however, bright yellow or green...... from the European pratensis in the struc- .. campestris, p. 154 ture of the right genital clasper, fig. 161; Rostrum reaching to or slightly be- oblineatus is darker in color and has def- yond hind coxae...... 4 inlte stripes. 4. Hind tibiae deep black...... ADULTS.-Fig. 162. Length 4.90-5.50, ...... atritibialis, p. 152 width 2.50; ovate. General color shining, Hind tibiae more or less pale ...... S yellowish brown with more or less blackish 5. Color chiefly pale or green, sometimes marking, or reddish brown and fuscous with darker markings ...... 6 areas; pronotum with yellowish and blackish Color yellowish brown to black, or rays; scutellum margined with blackish reddish ...... 8 leaving a Y- or heart-shaped yellowish September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS5IIA 149

HEtSPERUS

VANIDUZECI PLAGIA TUS RUBICUNDUS

OB INCA TUS

OBL/AACA TUS PABUL/NUS CAMPESTRIS AP/CAL/S Fig. 161.-Male genital claspers of Lygus. A, left clasper, lateral aspect; B, left clasper, dorsal aspect; C, right clasper, mesal aspect. central area; hemelytra reddish brown or chiefly under leaves on the ground; many blackish, streaked with yellowish or gray. also hibernate in mullein rosettes. The amount of black on the dorsum varies Illinois Records.-Five hundred eighty- greatly. five males and 453 females, taken Jan. 24 to The very dark extremes in which the Nov. 13, are from Albion, Algonquin, Al- black predominates belong to the variety lerton, Alton, Alto Pass, Amboy, Antioch, strigulatus (Walker) (1873, p. 94). Both Apple River Canyon State Park, Auburn extremes and their intergrades have been Park, Beach., Beardstown, Beverly Hills, collected together throughout. Illinois. Bloomington, Bluff Springs, Borton, KNOWN DISTRIBUTION.--This is the com- Browns, Bureau, Cache, Calvin, Carbon- monest species of the family Miridae in the dale, Carthage, Cary, Champaign, Charles- eastern United States and is found every- ton, Chester., Chicago, Custer Park, Cy- where frequenting many kinds of plants. It press, Danville, Darwin, Decatur, Delavan, is a peston nursery stock, ornamental plants De Soto, Dixon, Dolson, Dubois, East Cape and cultivated crops. The adults hibernate Girardeau, East Dubuque, Effingham, Ei- 150 ILLINOIS NATUIRAL HISTORY SURVEY BULLETIN Vol. 22, Art. I chorn, Elizabeth, Elizabethtown, E r i e, Forest State Park, Willow Springs, Wood- Ernst, Evanston, Fairmount, Farmer City, stock, York, Zion. Fountain Bluff, Fox Lake, Frankfort, Ful- ton, Galena, Galesburg, Georgetown, Giant Lygus vanduzeei Knight City State Park, Glencoe, Glen Ellyn, Glen- Lygus vanduzeei Knight (1917b, p. 565). view, Golconda, Grand Detour. Grand MALE.-Length 7.10, width 3.30. Head width 1.25, vertex 0.50. Rostrum, length 2.93, just attaining posterior margins of hind coxae, yellowish brown, apex blackish. Antennae, first segment, length 0.85, reddish brown to black; second, 2.22, reddish brown, apex blackish; third, 1.31, blackish, narrow pale area at base; fourth, 1.00, fuscous; all segments with fine pubescence. Pronotum, length 1.70, width at base 2.82; nearly glabrous, strongly shining, punctures deep and irregularly placed; a small black spot present behind each callus, usually two in darkest specimens; basal angles with a black spot just inside the narrow, pale margins; in darkest specimens, dark lines extending along lateral margins of disk; a small black spot present just above coxal cleft; dark specimens have dark brown rays behind black spots on disk. Scutellum transversely rugose and sparsely punctate; yellowish brown, with apex and dash on either side at base paler. Hemelytra strongly shining, with minute pubescence, nearly glabrous; punctures coarse and deep, somewhat crowded; color rich dark brown, darker on clavus and at apex of corium; claval Fig. 162.-Lygus oblineatus. vein and cubitus pale; embolium translucent yellowish except at apex; cuneus translucent Tower, Grand View, Grayville, Hamilton, yellowish, dark brownish to blackish at Hardin, Harrisburg, Harvard, Hatton, Ha- base and on extreme apex. Membrane vana, Henry, Herod, Hillsboro, Hillsdale, fuliginous, a pale spot present in center and Homer, Horseshoe Lake, Iroquois, Joliet, on either side just behind apex of cuneus; Kampsville, Kankakee, Kansas, Kappa, Kar- veins at apices of cells and in area border- nak, Keithsburg, Lawrenceville, Lima, ing apex of cuneus also pale. Legs yellow- Litchfield, Mahomet, Makanda, Marshall, ish brown, apical halves of posterior femora Mason City, Maywood, McClure, Metrop- brownish' to blackish, with two pale rings olis, Milford, Monmouth, Monticello, near each apex; tibiae'greenish yellow, each Mounds, Mount Carmel, Mount Carroll, apex and spines dark brownish, a dark spot Muncie, New Columbia, New Milford, on base and, in some cases, a dark stripe; Normal, Oak Lawn, Oakwood, Olive tarsi dark brownish, tips blackish. Venter Branch, Ozark, Palmer, Palos Park, Paris, yellowish brown, a dark brownish, longi- Parker, Patoka, Pekin, Philadelphia, Pu- tudinal stripe on either side; some speci- laski, Quincy, Riverdale, River Forest, mens brownish beneath, thus forming a Rockford, Rock Island, Rockton, St. Anne, pale stripe beneath dark lateral one. Genital Savanna, Savoy, Seymour, Shawneetown, claspers, fig.' 161, typical for this group, but Sheldon, Sherman, Sparland, Springfield, shape of claw on right clasper and internal Starved Rock State Park, Temple Hill, Un- arm on left distinguishes this species. ion County State Forest, Urbana, Vienna, FEMALE.-Length 6.70; width 3.40; more Ware, Warsaw, Watseka, Waukegan, robust than male, but very similar in color West Union, White Heath, White Pines and general structural characters. September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 151

FOOD PLANT.-Goldenrod (Solidago can- dark brown, with three rather irregular, adensis and perhaps other species of the pale fasciae on anterior aspect; tibiae pale; genus). The adults hibernate and come spot at base and elongate mark just beneath forth in early spring to feed on the tender black. Genital claspers rather similar to goldenrod plants. The eggs are doubtless those of vanduzeei. inserted in the goldenrod stems where the Holotype, male.-Urbana, Ill.: S e p t. nymphs appear and feed during July. In 1932, T. H. Frison. New York, most of the adults mature by Paratype. -Same data as for holotype, the middle of August, and continue to feed until the cool September nights make them seek hibernation quarters. Lygus hesperus Knight KNOWN DISTRIBUTION.-Illinois, Iowa, Legume Bug Minnesota, Ontario, Wyoming and eastward, perhaps everywhere its host plant Lygus elisus hesperus Knight (1917b, p. grows freely. 575). Illinois Records.-NORTHERN ILLINOIS: MALE.-Length 6.50. Head width 1.22, 1 S. APPLE RIVER CANYON STATE PARK: vertex 0.45. Rostrum, length 2.68, slightly July 11, 1934, DeLong & Ross, 1 b, 2 !. exceeding posterior margin of hind coxae. GALESBURG: Sept. 13, 1888, 1 !. ROCK Antennae, first segment, length 0.65, pale ISLAND: May 19, 1934, Ross & Mohr, 1 S. reddish brown, fuscous on ventral side; sec- SAVANNA: June 13, 1917, 1 5. WHITE ond, 2.11, reddish, apex and ventral side at PINES FOREST STATE PARK: July 12, 1934, base very dark brown; third, 1.00, dark red- DeLong & Ross, 1 . dish brown to fuscous; fourth, 0.63, fuscous. Pronotum, length 1.34, width at base 2.30; Lygus frisoni new species yellowish; outer half of calli and a small This is to be distinguished from oblineatus round spot behind each inner margin, a spot (Say) by its larger size and longer second within basal and anterior angles of disk, and antennal segment; it is smaller than vandu- a small spot behind coxal cleft, black. Hem- zeei Knight, but the second antennal segment elytra more pallid than yellowish; apex of is relatively longer than in that species. clavus and suture, apical half of corium, MALE.-Length 6.10, width 3.00. Head and tip of embolium, reddish or marked width, 1.18, vertex 0.48; yellowish without with red; cuneus with inner margin and dark marks, collum black. Rostrum, length apex reddish. Membrane pale, faintly 2.60, extending to tips of hind coxae, yellow- shaded with brownish in areas bordering ish, apex black. Antennae, first segment, veins, a darker mark at inner apical angles length 0.73, yellowish brown, becoming of larger areoles. Legs yellowish, more or blackish beneath; second, 2.20, brownish, less shaded with reddish; two annuli present apical one-fourth black; third, 1.04, black; near apex of each femur; tibiae yellowish, fourth, 0.91, black. Pronotum, length 1.38, apices reddish, spines black. Venter fuscous width at base 2.38; disk rather coarsely beneath, sides yellowish. Genital claspers punctate; yellowish brown; two small spots as in fig. 161. present behind each callus, large spot at FEMALE.-Length 6.40. More uniformly either basal angle, and ray behind top of yellowish than male, pronotum entirely yel- coxal cleft, black. Scutellum pale to yellow- low except for a small black dot behind ish, darker on median line at base; coarsely inner margin of each callus; hemelytra uni- punctate; transversely rugulose. Hemelytra formly pallid, without reddish; markings on punctate, with rather fine pubescence, this femora more reduced than in male; venter pubescence more distinct than in vanduzeei; pale translucent yellow; apical area of co- yellow. Rostrum attaining or slightly ex- rium and area on middle of clavus fuscous ceeding posterior margins of hind coxae. to black. Cuneus pale, translucent; extreme FOOD PLANTs.-This species is an im- tip black. Membrane dark fuscous, veins portant pest of beans and alfalfa in Idaho yellowish; marginal spot beyond tip of cu- and Utah and on cotton in Arizona. Shull neus and basal half of cells clear. Venter (1933) has published a work on the biology very dark brown with a broad lateral, lon- and economic status of this species and has gitudinal, yellowish stripe. Legs yellowish given it the common name "legume bug." brown; apical half of each hind femur very KNOWN DISTRIBUTION.-This is a west- 152 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, sert. I ern species that finds its eastern limits of lucent; outer margin yellowish, but not distribution in Illinois, Iowa, Michigan and darker on apex. Membrane pale fuscous, Minnesota. veins pale. Dorsum clothed with fine, short, Illinois Record. - NORTHERN ILLINOIS: pale pubescence. Ventral surface uniformly yellow. Legs mostly yellowish, but hind femora with two subapical black annuli; Lygus atritibialis new species hind tibiae black; middle and front pairs This species is allied to hesperus Knight pale, fuscous at apices and each one with a and related western species, but is easily to black ring at base, spines black; tarsi fus- be distinguished by its uniformly black an- cous, apices and claws very dark brown. tennae and posterior tibiae, fig. 163. Genital claspers as in fig. 161. MALE.-Length 5.40, width 2.50. Head FEMALE.-,Length 5.20, width 2.50. Head width 1.17, vertex 0.45; yellow, collum width 1.17, vertex 0.52. Antennae, first black. Rostrum, length 2.30, extending segment, length 0.49; second, 1.51. Slightly slightly beyond hind coxae, yellow, apex very more robust than male, but very similar in dark brown. Antennae uniformly black; coloration; black marks on pronotum usually first segment, length 0.52; second, 1.56; more reduced. third, 0.87; fourth, 0.65. Pronotum, length FOOD PLANT.-Apparently breeds on 1.25, width at base 2.16; yellow; a lateral, wormwood (Jrtemisia canadensis). submarginal line joining outer half of callus, Holotype, male.-Oregon, Ill.: July 4, two rays behind each callus (in dark spec- 1932, on Artemisia canadensis, Mohr & imens these rays joining to form a submar- Dozier. ginal line), and ray behind top of coxal cleft, Allotype, female.-Same data as for black. Scutellum yellow; a geminate mark holotype. on middle of base, lateral edges and meso- Paratypes. -ILLINOIS.-OREGON: Same scutum, black. Hemelytra pale, translucent data as for holotype, 32 S, 48 9 . ROCKFORD: yellowish; middle of clavus and outer apical June 11, 1933, Mohr & Townsend, 2d. angle of corium fuscous. Cuneus pale, trans- ZION: July 6, 1932, T. H. Frison et al., 1 a. MICHIGAN.-PENTWATER: July 17, 1916, E. Liljeblad, 1 . M INNESOTA.-ST. PAUL: St. Anthony Park, June 18, 1921, at light, H. H. Knight, 1 ?, KC. Lygus elisus Van Duzee Pale Legume Bug Lygus pratensis elisus Van Duzee (1914, p. 20). MALE.-Length 4.80-5.80. Head width 1.20, vertex 0.45. Rostrum, length 2.11, scarcely attaining posterior margins of hind coxae. Antennae, first segment, length 0.52, pale yellowish to brown, very dark brown on ventral surface; second, 1.98, dusky brown, lower side at base and extreme apex darker; third, 0.85, brownish, apex fuscous; fourth, 0.60, dusky brown. Prono- tum, length 1.40, width at base 2.20; coarse- Fig.163.-Lgusati 9 ly, deeply and closely punctate, with minute, pale pubescence. General color pale greenish with pronotum and scutellum bright green, a small black spot present behind each callus. Scutellum bright green, two black dashes in middle at base; roughly. Fig. 163.-Lvrus atrztibia/:s Q. transversely rugose. Mesoscutum black. September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 153 scarcely exposed. Hemelytra pale, trans- Dubuque, East St. Louis, Elizabeth, Eliza- lucent; clavus with a dusky cloud in middle, bethtown, Forest City, Fountain Bluff, divided by pale claval vein; apex of corium Freeport, Galena, G a 1 e s b u r g, Grand with two small, fuscous patches; cuneus Tower, Harvard, Havana, Hillsboro, Hills- pale, extreme tip fuscous; membrane clear, dale, Homer Park, Kansas, Kappa, Keiths- veins pale. Legs pale yellowish; femora burg, Lawrenceville, Mahomet, Monticello, with a wide, fuscous band in middle on ven- Mounds, Muncie, Murphysboro, Niota, tral side, also with two annuli near each Oakwood, Oquawka, Oregon, Palos Park, apex; tibiae with a spot on knee and a ring Parker, Pekin, Philadelphia, Prophetstown, just below, fuscous; spines very dark brown. Quincy, Rock Island, Rockford, Rockton, St. Venter yellowish green; genital claspers dis- Francisville, St. Joseph, Sherman, Starved tinctive, fig. 161. Rock State Park, Springfield, Urbana, War- FOOD PLANTs.-This species is an im- saw, Waukegan, West Pullman, White portant pest on beans and altalfa in Idaho, Heath, White Pines Forest State Park, Utah and Arizona and perhaps other west- Willow Springs, York. ern states. Shull (1933) has discussed the biological and economic status of this spe- Lygus rubicundus (Fallen) cies and has given it the common name "pale legume bug." Phytocoris rubicundus Fallen (1829, p. 92). KNOWN DISTRIBUTION.-This is a west- MALE.-Length 4.50, width 2.14. Ovate, tern species which migrated eastward dur- robust. General color dark reddish brown ing the drought years of 1930 to 1936. It is to fuscous; second antennal segment shorter now known from Illinois, Iowa, Minnesota than width of head; genital claspers dis- and all the states westward. tinctive for species, fig. 161. Illinois Record.-ILLINOIS: 1 9 FEMALE.-Very similar to male in structure, but usually not so darkly colored. Lygus plagiatus Uhler HOST PLANTS.-Peach-leaved w i ll o w Lygus plagiatus Uhler (1895, p. 35). (Salix amygdaloides); occurs also to some MALE.-Length 5.30, width 2.80. More extent on other willows. robust than oblineatus (Say). General color KNOWN DISTRIBUTION.-A c o m m o n, black with greenish yellow mottling; head Holarctic species. and anterior part of pronotum yellowish or Illinois Records.-Seventy-four males olive green, hemelytra irregularly mottled and 70 females, taken April 15 to Nov. 15, with black and less dark spots. Right are from Alton, Antioch, Beardstown, genital clasper distinctive, fig. 161. Bloomington, Browns, Cairo, Carbondale, FEMALE.-Slightly more robust than male Chicago, Dongola, Elizabeth, Elizabeth- and usually not so dark in color; second town, Freeport, Galena, Galesburg, Geff, antennal segment shorter; pronotum yel- Golconda, Grafton, Grand Detour, Grand lowish, black rays behind calli frequently not Tower, Harrisburg, Hatton, Havana, Her- reaching black basal margin; venter green- od, Hopedale, Kankakee, Lilly, Marshall, ish yellow, blackish on the vagina exterior, Meredosia, Monticello, Mount Carmel, dark specimens with black more extended. Oquawka, Oregon, Putnam, Quincy, Rock- FOOD PLANTS.-Giant ragweed (Ambro- ford, Savanna, Springfield, Starved Rock sia trifida); a few Illinois specimens were State Park, Thebes, Urbana, Volo, West collected on fleabane (Erigeron sp.), smart- Union, White Pines Forest State Park, weed (Polygonum sp.), willow (Salix York. sp.) and hickory (Carya glabra). The last is undoubtedly a "sitting" record. Lygus pabulinus (Linnaeus) Illinois Records.-One hundred thirty- Cimex pabulinus Linnaeus (1761, p. 253). one males and 107 females, taken Feb. 12 MALE.-Length 5.50, width 2.00; body to Dec. 1, are from Algonquin, Allerton, elongate. General color pale green or Alton, Anna, Antioch, Apple River Canyon greenish yellow, frequently fading to dull State Park, Ashley, Beardstown, Bloom- yellowish..; carina of vertex indistinct in ington, Borton, Browns, Calvin, Carbon- middle; a fuscous Y-shaped mark formed dale, Champaign, Charleston, Danville, at extreme anal area of membrane; usually Darwin, Decatur, De Soto, Dubois, East a spot present within apices of are-oles, and 154 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. I a longitudinal cloud extending beyond ar- the identity of the species and its synonymy eoles to tip of membrane. Genital claspers with apicalis Fieber. as in fig. 161. MALE.-Length 4.50-5.00, width 2.00; FEMALE.- Length 6.10, width 2.22; body oblong; head broad, width 1.12, vertex slightly larger and more robust than male, 0.29, eyes unusually large. General color but not differing in coloration. greenish, dark green, or yellowish green; HOST PLANT.-Touch-me-not (Impatiens membrane, and, in some cases, corium, biflora). marked with fuscous; genital claspers dis- KNOWN DISTRIBUTION. - Europe and tinctive for species, fig. 161. Boreal America; apparently Holarctic in FEMALE.-Length 4.60, width 2.05; width distribution. of head 1.05, vertex 0.37; uniformly green Illinois Records.-Eight males and 11 or greenish yellow; eyes dark brown; tip females, taken May 7 to Oct. 6, are from of tarsi and apex of rostrum very dark Antioch, Bloomington, Bowmanville, Du- brown. bois, Elizabethtown, Evanston, Fountain HOST PLANT.-Fleabane (Erigeron cana- Bluff, Herod, Karnak. densis). KNOWN DISTRIBUTION.-Throughout the Lygus campestris (Linnaeus) eastern United States, and known also from Cimex campestris Linnaeus (1758, p. 448). Europe, Mexico, Central America and is- MALE.-Length 4.10, width 1.77. Ovate, lands of the Pacific. rather small. General color greenish brown Illinois Records. - Twenty-seven males or brownish yellow with fuscous areas; and 32 females, taken June 24 to Nov. 11, scutellum bright yellow or green; genital are from Cypress, Grand Tower, Hardin, claspers, fig. 161, distinctive for species. Lawrenceville, McClure, M o n t i c e 11 o, FEMALE.-Slightly more robust than Mounds, Quincy, Shawneetown, Ullin, Ur- male; second antennal segment more slen- bana, Villa Ridge, Ware. der; very similar to male in coloration. FOOD PLANTS.-Poison hemlock (Conium Neolygus Knight maculaturn) and other plants of the family Umbelliferae; Illinois specimens have been KEY TO SPECIES collected on wild parsnip (Pastinaca sativa) and cow parsnip (Heracleum lanatum). Re- 1. Pronotal disk greenish, or yellowish ported in Massachusetts and New Bruns- to brownish, but without distinct wick as a pest on celery plants. dark rays ...... 2 KNOWN DISTRIBUTION.-Common in the Pronotal disk black or marked with northern states and Canada; Holarctic in dark rays ...... 23 distribution. 2. Color chiefly greenish, old specimens Illinois Records. - Seventy-one males frequently fading to yellowish; and 83 females, taken April 12 to Oct. 9, sometimes darkened on clavus and are from Algonquin, Allerton, Antioch, at tip of corium. but ground color green ...... 3 Browns, Champaign, Elizabeth, Lawrence- Color ville, Oregon, Palos Park, St. Joseph, distinctly yellowish or brownish, Sey- more brownish than ...... 9 mour, Spring Grove, Urbana, Waukegan, green 3. Tibial spines with fuscous spots. at Willow Springs, Worth. base; corium never infuscated, but inner half faintly bronzed; clavus Lygus apicalis Fieber and basal half of pronotum usually Lygus apicalis Fieber (1861, p. 275). bronzed ... alni, p. 157 Lygus Carolinae Reuter (1876, p. 71). Tibial spines without fuscous spots at Lygus carolinae Reuter has remained an base ... 4 enigma to American Hemipterists up to the 4. Dorsum uniformly greenish, with a present time. Mr. W. L. McAtee visited small, fuscous mark beginning at the Stockholm museum in 1927 and at the inner apical angles of corium and writer's request examined the type of caro- extending transversely across anal linae and drew the genital claspers. These area of membrane; length 5.20- distinctive structures leave no doubt about 5.70 ... neglectus, p. 162 September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 155

Dorsum partly brownish; apical area 12. Hind femora without two distinct of corium and usually clavus dis- bands near apices; when dark, paler tinctly brownish, sometimes dark only at tip; second antennal seg- brown or even fuscous ...... 5 ment rarely darkened, if so, bands 5. Membrane with apical half infuscated on femora indistinct ...... 13 along median line, this darkened Hind femora with distinct dark or area forming a distinct, longitudinal light bands near apices; second an- ray which may be widened apically; tennal segment darkened apically. . 21 corium with a triangular dark 13. Scutellum dark, with a pale, median brownish spot just before apex, stripe on apical half; dorsum dark clavus usually brownish; length greenish brown to almost black, a 5.60-6.00 ...... belfragli, p. 162 lateral, dark fuscous stripe extend- Membrane never forming a median, ing full length of body; femora dark longitudinal fuscous ray; smaller with pale tips ...... invitus, p. 157 forms ...... 6 Scutellum sometimes dark, but with- 6. Apical one-fifth of second antennal out any indication of a pale median segment infuscated...... line...... 14 canadensis var. canadensis, p. 164 14. Color distinctly reddish; head, pro- Second antennal segment uniformly notum, femora and veins of mem- colored ...... 7 brane red ...... tinctus, p. 157 7. Scutellum partly fuscous; clavus also Color not reddish ...... 15 more or less darkened; corium with 15. Hemelytra uniformly rich brownish, a triangular dark patch before apex or brownish pink; clavus and apical .ii...... tiiae, p. 161 half of hemelytra not appreciably Scutellum pale; clavus and apex of darker ...... 16 corium usually darkened ...... 8 Hemelytra not uniformly colored; 8. Area of clavus bordering scutellum clavus and apical half of corium dark brown;apicalhalfofmembrane darker than scutellum and basal clear, a fuscous spot at margin halfofcorium ...... 18 either side of middle, a spot also 16. Hemelytra and femora brownish pink; bordering tip of cuneus ...... membrane distinctly darkened...... inconspicuus, p. 161 ...... fagi, p. 161 Area of clavus bordering commissure Hemelytra reddish yellow brown to as well as along scutellum dark black, or uniformly rich brownish; brown; apical half of membrane membrane darkened, or uniformly rather uniformly infuscated...... yellowish ...... 17 ...... clavigenitalls, p. 163 17. Dorsal prongs of left genital clasper 9. Rostrum scarcely attaining apices of parallel or converging at tips, fig. intermediate coxae; color rich yel- 164 ... hirticulus, p. 163 lowish brown, darker on clavus and Dorsal prongs of left genital clasper apex of corium ...... 10 divergent at tips, fig. 164......

Rostrum extending beyond apices of ...... geminus, p. 163 intermediate coxae...... 11 18. Second antenna! segment darkened 10. Second antennal segment darkened apically ... 19 at apex, its length greater than Second antennal segment uniformly width of pronotum at basal margin colored, never distinctly darkened ...... viburni, p. 159 apically . .. 20 Second antennal segment not in- 19. Length 4.70-5.00; female vertex dis- fuscated, its length less than width tinctly wider than dorsal width of of pronotum at base.. nyssae, p. 164 an eye; male left genital clasper 11. Apical half of tylus black; two reddish with basal spine shorter and more bands present near apices of hind slender than posterior spine, fig. 164

femora; sides of body red...... carpini, p. 164 ...... atritylus, p. 157 Length 5.50-6.00; female vertex nar- Tylus not black, or, if so, then body rower than dorsal width of an eye; and bands on femora not reddish.. 12 male left genital clasper with basal 156 ILLI:NOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Irt. 1

spine longer and stouter than pos- uniformly dark brown......

terior spine, fig. 164. ostryae, p. 164 . . hirticulus, p. 163 20. Length of second antennal segment 27. Hind femora with two dark brown or scarcely exceeding width of poster- pale bands near apices ...... 28 ior margin of pronotum; rostrum Apical halves of hind Remora dark scarcely attaining apices of hind brown to black, but without two coxae; hemelytra greenish yellow distinct bands, pale only at apices. 32 with apical spot on corium and 28. First and second antennal segments inner margins of clavus dark brown- black; embolium, outer half of ish to almost black...... corium and cuneus, pale and trans- . clavigenitalis, p. 163 lucent .. johnsoni, p. 162 Length of second antennal segment First antennal segment pale or only much exceeding width of posterior slightly brownish; apex of embol- margin of pronotum; rostrum ex- ium and outer half of corium dark- tending slightly beyond apices of if hind coxae; clavus and corium dark ened; not, then first antennal segment distinctly pale ...... 29 brownish .... geneseensis, p. 159 21. Pale greenish yellow; clavus and large 29. Sides of body and usually hind femora spot on apical half of corium very distinctly reddish.. communis, p. 159 dark brown; femora greenish yellow, Sides of body and femora not reddish . 30 with faint, fuscous bands near 30. Embolium and basal half of corium apices ...... pale, a large black spot on apical canadensis var. canadensis, p. 164 half of corium; clavus and a nearly Color yellowish to brownish; apical quadrate spot behind each callus half of corium brownish, but this black; calli and areas just anterior colored area not a to them not black...... forming definite canadensis var. binotatus, p. 164 spot; femora brownish or reddish. .22 Embolium usually darkened apically; 22. Femora and, usually, sides of body if not, then calli and areas just an- distinctly reddish; hind femora with terior to them black.. 31 dark reddish bands before apices.. 31. Apex of median line of scutellum and . .... quercalbae, p. 160 Femora and sides of body dark brown all but cuneus of hemelytra dark to fuscous; hind femora with dark brown to black...... brown bands before apices...... caryae var. caryae, p. 161 Scutellum and basal half of corium . .... omnivagus, 163 p. and embolium distinctly pale..... 23. Pronotal disk dark, but without dis- .....caryae var. subfuscus, p. 161 tinct rays .... 24 Pronotal disk with distinct, dark rays 32. Scutellum with a darkened median or spots behind calli ...... 27 line; apex and inner margin of 24. Sides of body and hind femora dis- cuneus, femora and variable areas tinctly reddish; femora with pale on sides of body, reddish...... and dark red bands near apices...... univittatus, p. 160 ...... quercalbae, p. 160 Scutellum never with a dark brown Sides of body and femora not reddish.25 median line ...... 33 25. Hind femora black, with paler bands 33. Pronotal disk with small fuscous mark near apices; hemelytra black, costal behind each callus; venter dark margin scarcely paler, cuneus clear, brown, with a pale, lateral stripe... i apex dark...... semiv ttatus, p. 163 ...... caryae var. caryae, p. 161 Pronotal disk with distinct black ray Hind femora greenish to brownish, or spot behind each callus; venter without subapical bands ...... 26 without pale, lateral stripe ...... 34 26. Embolium greenish, clavus and inner 34. Pronotal disk with two conspicuous, half of corium dark fuscous to al- nearly square black spots, one be- most black ...... tiliae, p. 161 hind each callus; ground color yel- Embolium scarcely paler than corium, lowish brown; hind femora black hemelytra and whole dorsum nearly except at tips.. atrinotatus, p. 162 September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 15i

A black stripe traversing outer half hypodermis. Hemelytra reddish to fuscous, of each callus and extending to with clavus and apical half of corium dis- posterior margin of pronotal disk; tinctly fuscous; cuneus pale, flecked with ground color pale yellowish, with red about margins; membrane pale, with red clavus and apices of corium and veins and with areas within areoles and embolium black... vitticollis, p. 162 along margin behind cuneus fuscous. Dor- sum clothed with fine, yellowish, recumbent Neolygus invitus (Say) pubescence; pronotum and scutellum mi- Capsus invitus Say (1832, p. 24). nutely regulose, as in allied species. Venter MALE.-Length 5.00, width 2.00. Gen- of body pale yellowish, tinged with reddish eral color dark greenish with fuscous or and shaded with fuscous; sides of thorax black areas; a lateral, fuscous stripe ex- dusky. Legs yellowish green, hypodermis of tending full length of body, including genital femora rather uniformly colored with bright segment; apical half of scutellum with a red; tarsi darkened. Genital claspers distinc- pale, median vitta; disk of pronotum dark tive, fig. 164-; form nearest to invitus, but brown or black, but never with two distinct left clasper thicker at base and right clasper rays, as in communis Knight; genital clasp- with a much more prominent, protuberant ers distinctive for species, fig. 164. shoulder at middle. FEMALE.-Length 5.10, width 2.20; slight- FEMALE.-Length 4.63, width 2.20. Head ly more robust than male, very similar in with frons, tylus and juga bright red. An- coloration, but in general lighter colored, tennae yellowish, first segment becoming with pale vitta on scutellum longer. reddish at apex, third and fourth segments FOOD PLANT.-American elm (Ulmus dusky; first segment, length 0.47; second, americana); a single specimen was collected 1.47; third, 0.82; fourth, 0.34. More robust in Illinois on hickory (Carya sp.). than male, and very similar in coloration, KNOWN DISTRIBUTION.-Connecticut, although with less fuscous shading on prono- Illinois, Indiana, Iowa, Massachusetts, tum and hemelytra. Michigan, Minnesota, Missouri, New York, Holotype, male. - Morgan C o u n t y, Ohio, Vermont. Ind.: June 10, 1933, on Gleditsia triacan- Illinois Records.-ILLINOIS: June 21, thos, P. 0. Musgrave, KC. 1892, 2 2. DUBOIS: May 21, 1917, 1 6. Allotype, female. - ILLINOIS. -EI- ELIZABETHTOWN: May 27-31, 1932, on elm, CHORN, HICK'S BRANCH: June 13, 1934, H. L. Dozier, 10 a, 6 2. FRANKFORT: June DeLong & Ross. 8, 1933, Mohr & Townsend, 2&, 9 2. MOUNT CARMEL: May 27, 1884, on leaves Neolygus atritylus Knight of Carya sp., 1 MUNCIE: June 8, 1917, 9. Lygus (Neolygus) atritylus Knight (1917b, 1 2. SAVANNA: June 1, 1917, 1 9 ; June 12, p. 606). 1917, 3 &, 1 9. No Illinois specimens; known from Colo- rado, Minnesota, New Hampshire, New Neolygus tinctus new species York,: Vermont. Feeds on willow (Salix This species is distinguished from allied sp.). ones by its smaller size and reddish coloration; it apparently is most closely related to Neolygus alni Knight invitus (Say). Lygus (Neolygus) alni Knight (1917b, p. MALE.-Length 4.76, width 2.00. Head width 0.99, vertex 0.30. Rostrum yellowish, MALE.-Length 5.50-6.00, width 2.00. apex reddish brown, length 1.56, extending Head width 1.00, vertex 0.33. Rostrum, slightly beyond middle of hind coxae. An- length 1.88, just attaining posterior margins tennae, first segment, length 0.44, yellowish of hind coxae. Antennae, first segment, brown; second, 1.56,. yellowish, becoming length 0.64; second, 2.02, yellowish to dusky at apex. Pronotum reddish; basal half brownish, its apex not strongly infuscated; of disk fuscous; calli dusky brown; median third, 1.04; fourth, 0.74. Pronotum, length line of side of pronotum paler just behind 0.86, width at base 1.57. Color medium calli. Propleuron pale about cox'al cflejt. green to light green, fading to yellowish in Scutellum yellowish, with many red flecks in old specimens; clavus, scutellum and basal 158 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. I

INCONSPICUUS V/BURN/ t/ZMTTA:JS

ATRIT3LUS '? ATRINOTATUS NEGLECTWS

ARIRTJ~t~I A\; [ ALB a C

OUERCALBAt H/A TICLILUS NYSSAE

A C,C.( -' T/NC TUS CAR/A '/ GEM/NUS

Fig. 164.-Male genital claspers of Neolygus. a, left clasper, lateral aspect; B, left clasper, dorsal aspect; C, right clasper, ventral aspect. September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 159 half of pronotal disk usually distinctly Knight, but is smaller and more yellow- bronzed. Membrane slightly smoky, with ish brown than that species. It also is closely apical part of cells and a narrow transverse related to geneseensis Knight, but is more spot at apex of cuneus darker, veins pale to robust and has a shorter rostrum; the apical dusky. Legs greenish, each tibial spine with half of the second antennal segment is dark- fuscous spot at base. Venter bright green ened, and the general coloration is a richer to yellowish green. Genital claspers, fig. 164, yellowish brown. Claspers, fig. 164, distinc- distinctive for species. tive for species. FEMALDE.-Length 5.50, width 1.95. Form, FEMALE.-Length 5.30, width 2.28; very color and pubescence very similar to those similar to male in coloration, but usually of male. not so dark. HOST PLANT.-Alder (Alnus incana). FOOD PLANT.-Sheepberry (Viburnum KNOWN DISTRIBUTION.-Illinois, Minne- lentago). In New York state this bug often sota, New Hampshire, New York, Nova occurs in such numbers that foliage of its Scotia, Quebec. host is badly injured. Illinois Record.-HEROD: June 20, 1935, KNOWN DISTRIBUTION.-Connecticut,, DeLong & Ross, 1 S. Illinois, Michigan, Minnesota, New York, Ohio, Pennsylvania. Neolygus geneseensis Knight Illinois Records.-GALENA: June 30, 1932, Dozier & Mohr, 1 ,, 1 y. GALES- Lygus (Neolygus) geneseensis Knight (1917b, BURG: July 16, 1892, 2 . p. 609). y MALE.-Length 5.00, width 2.05. General Neolygus communis Knight color yellowish brown to dark brown and fuscous. Allied to viburni Knight, having Pear Plant Bug much the same color, but differs in being Lygus (Neolygus) communis Knight (1916a, slightly smaller, having a longer rostrum p. 346). and differently shaped genital claspers, fig. This species, fig. 165, is suggestive of 164. invitus (Say), but may easily be distin- FEMALE.-Length 4.90, width 2.10; very guished from it by the two black rays on the similar to male, but more uniformly yellow- disk of the pronotum, the reddish lateral ish brown; distinguished from viburni by stripe on the body and the larger size. having uniformly yellowish antennae, and MALE.-Length 5.50, width 2.30. Anten- by the rostrum, which extends to posterior nae with second segment dark brownish to margins of hind coxae. fuscous, sometimes with basal half paler; FOOD PLANTS.-White oak (Quercus third dark brown; fourth fuscous. Prono- alba) and post oak (Q. stellata). tum greenish, darkened with brown on KNOWN DISTRIBUTION.- Georgia, Illi- basal half; two black rays on disk, one be- nois; Iowa, Maryland, Massachusetts, hind each callus and, in the darkest speci- Michigan, Mississippi, Missouri, New mens, extending across calli, widened behind York, Pennsylvania, Virginia. and nearly reaching hind margin. Scutellum Illinois Recor'ds.-Fifteen males and 13 greenish, darkened with brown; rarely with females, taken May 25 to July 4, are from a longitudinal, median, fuscous line. Hem- Beach, Charleston, Elizabethtown, Frank- elytra dark brown to fuscous, darker on fort, Galena, Geff, Grand Detour, Harvard, apical half of corium and across tip of em- Marsh'all, Oakwood, Palos Park, St. Joseph, bolium; cuneus clear, tinged with yellow, White Heath, White Pines Forest State extreme tip sometimes slightly darkened; Park. membrane darkened. Legs greenish to yellowish, posterior femora and often interme- Neolygus viburni Knight diate femora with two reddish annulations Lygus (Neolygus) viburni Knight (1917b, near each apex; frequently entire apical p.- 609). halves reddish. Venter pale greenish with a MALE.-Length 5.20, width 2.08; width broad, lateral band and the genital segment of head 1.03, vertex 0.38. Rostrum short, its dark brownish red; genital claspers dis- apex scarcely attaining posterior margins tinctive for species, fig. 164. of mesocoxae. Similar to omnivagus FEMALE.-Length 5.40, width 2.40. More 160 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22,JArt. I robust than male, but very similar in color in one place six eggs were found deposited and pubescence. in a mass.- Most of the males die by the FOOD PLANTS AND HABITs.-Breeds on middle of July, but many females live until dogwoods (Cornus stolonifera, C. paniculata the end of that month. There is only one and C. alternifolia) and cultivated pear brood annually; the winter is passed in the (Pyrus communis); also reared from win- egg stage and the nymphs appear again in terberry (Ilex verticillata). The nymphs the spring at the time the leaves unfold. In hatch when the leaves unfold and they feed Nova Scotia a smaller, more slender form, variety novascotiensis Knight (1916a, p. 349), is an important pest on apple fruit. KNOWN DISTRIBUTION.-Colorado and Idaho northward to Alberta and Minnesota, eastward to Ontario and Maine and southward to North Carolina. Illinois Records.-ANTIOCH: Aug. 1, 1924, T. H. Frison, 1 9 ; July 5-7, 1932, T. H. Frison, on Ilex verticillata, 4 a, 20 .- FRANKFORT: June 8, 1933, Mohr & Town- send, 3 9. QUINCY: June 11-30, 1883, low- lands, 1 v . ST. JOSEPH: June 17, 1932, T. H. Frison, 1 9.

Neolygus univittatus Knight vA l Lygus (Neolygus) univittatus Knight (1917b, p. 623). Known only from New York, but inten- sive collecting on its host plant, hawthorn (Crataegus sp.), should extend its recorded range. Neolygus quercalbae Knight

Fig. 165.-- Neolvgus comm unis, 9. Lygus (Neolygus) quercalbae Knight (1917k, p. 624). on this tender foliage. On pears, the nymphs MALE.-Length 5.70, width 2.40. Re- attack the young fruit as soon as it forms sembles omnivagus Knight, but is deeper and continue to feed on it in preference reddish brown, more robust, and has a pale to the leaves. All pears thus punctured be- stripe on either side of venter; similar to come knotty and scarred to such an extent semivittatus Knight in coloration of venter, that the fruit is unsalable. The nymphs are but does not have distinct, fuscous spots be- green, closely matching the color of the hind calli and is more red in color; genital young fruit; this makes it difficult to see claspers, fig. 164, distinctive. them. The nymphs mature in about 24 days, FEMALE.-Length 5.60, width 2.60; more or, usually, by the middle of June in central robust than male, but very similar in colora- Illinois. The adults, likewise, prefer to tion; larger and more reddish than on:i- feed on the pears and contribute further to vagus and semivittatus; distinguished from the destruction of the fruit. In New York, them by the distinctly reddish hind femora the author observed that the adult bugs were and sides of body. active agents in distributing pear blight FOOD PLANT.-White oak (Quercus among the trees, the blight developing about alba) on which it is often very abundant. feeding punctures made by the bugs. Ovi- This species has been collected on peach position occurs during the last week of June trees and hickory (Carya ovaa) along with and up to the middle of July in New York, N. caryae Knight, but breeds only on white a few individuals -probably laying after that oak-so far as the writer has been able to de- date. The eggs are inserted under the bark termine. The nymphs hatch with the burst- of the new cambium layer (Knight 1915); ing of the buds and feed thereafter on the September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 161 tender foliage. In times of rain or cold FOOD PLANT.-Muscadine grape (IVitis weather the nymphs retreat under the bud rotundifolia). scales which remain on the trees. Up to the KNOWN DISTRIBUTION.-Connecticut, fourth instar the nymphs are greenish yel- Georgia, Illinois, Indiana, Iowa, Maryland, low, but later they become tinged with Michigan, Minnesota, New York, North pink; in the last instar the wing pads be- Carolina, Oklahoma, Virginia. come brownish while the body is pink. In Illinois Records.-NORTHERN ILLINOIS: western New York the nymphs are develop- June, 1 9. ALDRIDGE: May 8, 1932, H. L. ing during May and usually begin maturing Dozier, 1 9. ELIZABETH: July 6, 1917, 1 S. during the first week of June; the adults FREEPORT: July 4, 1917, 1 d v OREGON: June may remain on the trees up to the middle of June 11, 1933, Mohr & Townsend, 1 9. July. Eggs are laid mostly in late June and WILLOW SPRINGS: July 3, 1904, W. J. Ger- early July in the oak twigs; there they pass hard, 1 9, FM. the winter, and the nymphs come forth with the bursting of the buds the following Neolygus tiliae Knight spring. KNOWN DISTRIBUTION.-Connecticut, Lygus (Neolygus) tiliae Knight (1917b, p. Illinois, Iowa, Maryland, Massachusetts, 613). Michigan, Minnesota, Missouri, New York, MALE.-Length 4.60, width 1.74; rather Ontario, Virginia, Wisconsin. small, scarcely as large as invitus (Say). Illinois Records.-Twenty males and 18 General color greenish yellow, with base of females, taken May 9 to July 6, are from pronotum darker, and scutellum, clavus and Algonquin, Antioch, Beach, Cedar Lake, corium dark fuscous to black. Genital Dongola, Dubois, Elizabeth, Frankfort, Ga- claspers distinctive, fig. 164. lena, Glen Ellyn, Goreville, Grand Detour, FEMALE.-L e n g t h 5.00, width 2.00. Harvard, Meredosia, Oregon, St. Anne, Sa- Lighter colored than male and usually vanna, Urbana, Willow Springs, Zion. slightly larger; pronotum yellowish, scutellum and clavus only slightly darkened, apex Neolygus of corium with a triangular dark patch, fagi Knight much resembling belfragii (Reuter) in this Lygus (Neolygus) fagi Knight (1917b, p. respect; similar in size and general appear- 603). ance to inconspicuus Knight and clavigeni- Not as yet collected in Illinois; known talis Knight; distinguished from inconspi- from Massachusetts, New Hampshire, New cuus by having front of head more conic York, Ohio, Vermont. Feeds on beech and scutellum darker; clavigenitalis differs (Fagus grandifolia) and birch (Betula from this species in being generally more lutea). brownish with a paler scutellum. FOOD PLANT.-Linden (Tilia americana). Neolygus inconspicuus Knight KNOWN DISTRIBUTION.-Connecticut, Lygus (Neolygus) inconspicuus Knight Illinois, Iowa, Massachusetts, Minnesota, (1917b, p. 612). New York, Ohio, Ontario, Pennsylvania, MALE.-Length 4.50, width 2.08. Gen- Vermont. eral color pale greenish; a transverse brown- Illinois Records.-Sixty-seven males and ish spot at apex of corium and on area of 53 females, taken June 8 to July 19, are clavus bordering scutellum; in general ap- from Algonquin, Antioch, Elizabeth, Frank- pearance, resembling tiliae Knight and cla- fort, Freeport, Galena, Galesburg, Kamps- vigenitalis Knight, but differing greatly from ville, Monticello, Oregon, Urbana, Wauke- those species in form of genital claspers, gan. fig. 164. FEMALE.-Length 4.80, width 2.25; very Neolygus caryae Knight similar to male in size and coloration; simi- Lygus (Neolygus) caiyae Knight (1917b, p. lar in size and general appearance to cla- 615). vigenitalis and tiliae; distinguished from the MALE.-Length 4.80-5.70, width 2.10. latter by the pale scutellum, and from the General color varying from dark brown or former by being more greenish with a paler black to yellowish brown with more promi- scutellum. nent dark areas on pronotum and apex of 162 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Aol. 22, Art. 1 hemelytra. Paler brown forms suggest its large size and distinct black markings. omnivagus Knight. Genital claspers distinc- General color pale yellowish, with two rays tive, fig. 164. on pronotum; clavus, apical halves of poste- FEMAIBE.-Length 5.00-6.30, width 2.30; rior femora, and apices of corium and of more robust than male, frequently with embolium, black; rostrum reaching only in- brownish yellow areas between the calli and termediate coxae; genital claspers, fig. 164, over posterior part of disk. distinctive. Specimens which are towards the pale end FEMALE.-More robust than male, but of the series with a more or less prominently not differing in coloration. banded effect represent the variety subfuscus FOOD PLANTS.-Sugar maple (Acer sac- Knight (1917b, p. 616); they resemble om- charum), red maple (A. rubrum) and sil- nivagus in coloration. Specimens that show ver maple (A. saccharinum). all ranges of color have been taken in Illi- KNOWN DISTRIBUTION.-Connecticut, nois, frequently both extremes and the inter- Illinois, Indiana, Iowa, Michigan, Minne- grades together on the same tree. sota, New Jersey, New York, Ohio, On- FOOD PLANTS.-Hickory (Carya ovata) tario. In the original description Reuter and pecan (C. illinoensis). Also, single Illi- gave Texas as the type locality for vitticollis, nois specimens were taken on locust (Robi- but Mr. W. L. McAtee examined the type nia pseudoacacia), oak (Quercus sp.) and in the Stockholm Museum in 1927 and re- red cedar (Juniperus virginiana). There is ported that it was labeled "N. Y." no evidence that they fed on these hosts. Illinois Records.-Twenty-four males Of recent years this species has been re- and 37 females, taken May 11 to July 1, are ported several times as causing "cat-facing" from Algonquin, Antioch, Carlinville, Mere- on peaches in New York and Ohio. The dosia, Mount Carmel, Normal, Oakwood, species may breed on nearby hickory trees Oquawka, Savanna, Urbana, White Heath. and, when mature, fly to the peach trees where they puncture and feed upon the Neolygus neglectus Knight young fruits. Lygus (Neolygus) neglectus Knight (1917b, KNOwN DISTRIBUTION.-Connecticut, p. 619). Illinois, Iowa, Massachusetts, Michigan, Known from Alabama northward to Minnesota, Mississippi, New Hampshire, Maine and westerly from Louisiana, Missis- New York, North Carolina, Ohio, Ontario, sippi, Ohio. This species has not as yet been Texas. taken in Illinois, but it should be found here Illinois Records.-Sixty-two males and. eventually. Feeds on American hornbeam 58 females, taken May 15 to July 6, are (Carpinus caroliniana). from Antioch, Bluff Springs, Dubois, Eliza- bethtown, Fox Lake, Frankfort, Freeport, Neolygus johnsoni Knight Galena, Galesburg, Glen Ellyn, Goreville, Grand Detour, Grayslake, Hardin, Har- Lygus (Neolygus) johnsoni Knight (1917b, vard, Havana, Kampsville, Manito, Mere- p. 629). dosia, Oquawka, Rockford, Savanna, Sey- No Illinois specimens; known from New mour, Urbana, Waukegan, White Pines York, Ohio, Virginia. Feeds on hornbeam Forest State Park, Zion. (Carpinus caroliniana). Neolygus atrinotatus Knight Neolygus belfragii (Reuter) Lygus (Neolygus) atrinotatus Knight (1917b, Lygus belfragii Reuter (1876, p. 71). p. 617). MALE.-Length 5.80, width 2.30; elon- Known from District of Columbia, North gate. General color green or greenish yel- Carolina, Ohio, Pennsylvania; not yet col- low; clavus brownish, tinged with fuscous lected in Illinois. and bronze; apex of corium with a triangular fuscous or blackish patch, mem- Neolygus vitticollis (Reuter) brane with a median, longitudinal, fuscous Lygus vitticollis Reuter (1876, p. 71). area; genital claspers distinctive, fig. 164. MALE.-Length 5.80, width 2.48; elon- FEMALE.-Length 5.50-5.80; similar to gate, easily separated from other species by male in coloration, but more robust. September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 163

HOST PLANTs.-Breeds on Acer spicatum North Carolina, Ontario, Pennsylvania, and Viburnum acerifolium. Quebec, Rhode Island, Vermont, Virginia, KNOWN DISTRIBUTION.-Illinois, Maine, Wisconsin. Minnesota, New York, Ontario, Pennsyl- Illinois Records.-Eleven males and 25 vania; Wisconsin. females, taken June 4 to July 31, are from Illinois Record.-DOLSON: July 18, Dolson, Galena, Glen Ellyn, Grand Detour, 1934, Rocky Branch, DeLong & Ross, 1 j. Keithsburg, Lilly, Marshall, McHenry, Monticello, Mount Carroll, Oregon, Rock- Neolygus clavigenitalis Knight ford, St. Anne, Savanna, White Pines For- est State Park, Willow Springs. Lygus (Neolygus) clavigenitalis Knight (1917b, p. 632). Known from Connecticut, Maine, Mary- Neolygus hirticulus (Van Duzee) land, Massachusetts, Ohio, but not yet col- Lygus tenellus Van Duzee (1912, p. 484), not lected in Illinois. Has been collected on Hahn. smooth alder (Alnus rugosa). Lygus hirticulus Van Duzee (1916a, p. 41). MALE.-Length 4.80, width 2.28. General Neolygus semivittatus Knight color dark ferrugino-testaceous, sometimes entirely dark fuscous or black, except for Lygus (Neolygus) semivittatus Knight (1917b, the legs and antennae; genital claspers dis- p. 626). tinctive, fig. 164. Not yet taken in Illinois, but it should be FEMALE.-Length 5.30, width 2.30. Slight- found here eventually. Known from Ala- ly larger and more robust than male. Uni- bama, Florida, Minnesota, Mississippi, New formly colored with yellowish brown or, York, Pennsylvania, Texas, Virginia; feeds in some cases, dark brown; hemelytra rarely on white oak (Quercus alba). much darker than pronotum; easily confused with fagi Knight, but membrane is uni- Neolygus omnivagus Knight formly and faintly tinged with fuliginous color, never dark as in fagi. Lygus (Neolygus) omnivagus Knight (1917b, p. 627). FOOD PLANTs.-Chestnut (Castanea sp.), MALE.--Length 5.40, width 2.20. Yellow- sugar maple (Acer saccharum), beech ish brown with apex of corium dark brown (Fagus sp.), ash (Fraxinus sp.), cottonwood to (Populus deltoides) and woodbine (Psedera fuscous; clavus dark brown or black; sp.). very much resembling forms of semivittatus KNOWN DISTRIBUTION.-Connecticut, Knight and quercalbae Knight; also similar Illinois, Iowa, Maryland, Massachusetts, in color to caryae subfuscus Knight, but Minnesota, New Hampshire, New Jersey, genital claspers distinctive, fig. 164. New York, North Carolina, Ohio, Ontario, FEMALE.-Length 5.40, width 2.50. Usu- Pennsylvania, Rhode Island, Vermont. Al- ally paler than male, more yellowish brown; ways rare. never reddish, as in quercalbae, nor with Illinois RecordS.-ILLINOIS: 1 ; July fuscous marks on pronotum as in semivit- 9, 1892, 1 9 ; July 16, 1892, 1 9. DUBOIS: tatus or caryae subfluscus; very similar to June 3, 1919, 1 a . FRANKFORT: June 8, canadensis Knight, but that species has apical 1933, on Fraxinus sp., Mohr & Townsend, one-third of second antennal segment dis- 3 d. URBANA: June 30, 1889, woods above tinctly black, fuscous spot on apex of the cor- lake, 1 a ; July 20, 1917, cottonwoods, 1 a ium smaller and embolium entirely without July 27, 1917, cottonwood grove, I 9. fuscous. WILLOW SPRINGS: July 8, 1906, W. J. Ger- FOOD PLANTS*.-White oak (Quercus hard, 1 9, FM. alba), red oak (Q. rubra), scarlet oak (Q. coccinea) and probably other oaks; breeds occasionally on dogwood (Cornus sp.), Neolygus geminus new species chestnut (Castanea sp.) and arrow-wood This is closely allied to hirticulus (Van (Viburnum sp.). Duzee), as individuals of the two species are KNOWN DISTRIBUTION.-Connecticut, similar in size and coloration, but the males Illinois, Iowa, Massachusetts, Michigan, are readily distinguished by the structure Minnesota, New Hampshire, New York, of the genital claspers, fig. 164. 164 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. I

MALE.-Length 4.80, width 2.20. Head ray behind each callus extending nearly to width 0.91, vertex 0.34. Rostrum, length the hind margin of the pronotum and 1.81, almost attaining posterior margins of would, thus, be referable to the variety bino- hind coxae. Antennae, first segment, length tatus Knight (1917b, p. 635). 0.58, pale; second, 1.98, pale to yellowish MALE.-Length 5.50, width 2.08. Second brown; third, 1.17, dusky yellow; fourth, antennal segment, length 2.05, pale yellow- 1.21, dusky. Pronotum, length 0.95, width ish, apical one-third fuscous to black. Mar- at base 1.70. Color dusky brown, hemelytra gins of scutellum usually brownish; cuneus slightly darker; cuneus pale, translucent; pale; legs greenish yellow; hind femora with membrane pale to smoky, veins yellowish. two pale, fuscous annuli near apices; genital Legs pale to yellowish; femora tending to claspers distinctive, fig. 164. yellowish brown. Venter yellowish to KNOWN DISTRIBUTION.-Illinois, Minne- brown, darker on sides; genital claspers dis- sota, New Jersey, New York, Ohio, On- tinctive. tario, Wisconsin. FEMALE.-Length 5.00, width 2.30. Head Illinois Record.-NORTHERN ILLINOIS: width 0.95, vertex 0.39; antennae, first seg- July, 1 A. ment, length 0.60; second, 1.94; third, 1.17. Pronotum, length 1.08, width at base 1.77. Neolygus ostryae Knight Slightly more robust than male and more yellowish brown in color. Cannot at present Lygus (Neolygus) ostryae Knight (1917b, be separated from female of hirticulus. p. 635). Hoiotype, male. -Elzabethtown, Ill.: MALE.-Length 5.80, width 2.36. Head May 27-31, 1932, H. L. Dozier. width 1.05, vertex 0.37. Rostrum, length Allotype, female. -Same data as for 2.08, reaching posterior margins of hind holotype. coxae. Antennae, first segment, length 0.74; second, 2.25, yellowish, apex fuscous; third, Paratypes.-ILLINOIS. - Same data as for holotype, 4 A, 1 9 . GOLCONDA: June 1.25, yellowish with apical half slightly in- 22, 1932, on Trifolium pratense, Ross, fuscated; fourth, 0.71, infuscated. Prono- Dozier & Park, I1e. tum, length 1.00, width at base 1.85. Deep yellowish brown in color; embolium and basal half of corium pale yellowish; clavus Neolygus nyssae Knight and apical half of corium light brown to Lygus (Neolygus) nyssae Knight (1918c, dark brown; cuneus almost colorless, tinged p. 43). with yellowish. Genital claspers as in fig. MALE.-Length 5.50, width 2.50; slightly 164. more robust, but in general structure simi- FEMALE.-Length 6.00, width 2.40; similar to quercalbae Knight; pronotum and lar to male in coloration, but slightly larger scutellum evenly shaded with rich brown; and more robust. clavus and corium darker brown; genital HOST PLANT.-Hop hornbeam (Ostrya claspers distinctive for species, fig. 164. virginiana) . FEMALE.-Length 5.60, width 2.57; very KNOWN DISTRIBUTION.-Illinois, Massa- similar to male in size and coloration. chusetts, New York Ontario, Vermont. FOOD PLANT.-Sour gum (Nyssa sp.). Illinois Record. - NORTH EVANSTON: KNOWN DISTRIBUTION.-Alabama, Con- Aug. 20, 1905, Gerhard & Wolcott, 1 9, FM. necticut, Illinois, Mississippi, Ohio, Pennsyl- vania. Neolygus carpini Knight Illinois Record.-DIxoN SPRINGS: June 24, 1936, DeLong & Ross, 1 9.- Neolygus carpini Knight (1939a, p. 21). MALE.-Length 4.70, width 2.00. Head width 0.99, vertex 0.35. Rostrum yellowish, Neolygus canadensis Knight apex brownish, length 1.90, extending slight- Lygus (Neolygus) canadensis Knight (1917b, ly beyond hind margins of posterior coxae. p. 634). Antennae with first segment pale, second This species is allied to omnivagus Knight, pale with apical one-third black, third yel- but is more greenish yellow in color and has lowish, fuscous apically, fourth fuscous. a distinct, dark spot on the corium. The Pronotum yellowish green, tinged with only specimen seen from Illinois has a black brown, without definite streaks or vittae. September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 165 Scutellum yellowish brown, scarcely darker 1.36; third, 0.50; fourth, 0.42. Pronotum, at sides. Hemelytra translucent, yellowish, length 0.64, width at base, 1.18. Body with clavus evenly shaded with brownish; clothed with soft, brownish, simple pubes- apical area of corium dark brown; cuneus cence; on embolium and legs pubescence pale uniformly translucent, scarcely tinged with brown or yellowish. General coloration yel- yellow; membrane and veins rather uni- lowish green, more distinctly green on pro- formly fuscous brown. Venter of body pale notum and tibiae; corium, clavus, and inner to yellowish, a fuscous band along lateral apical half of cuneus, reddish; base and out- margins. Fuscous band also extending er margin of cuneus paler. Membrane uni- across pleura of thorax. Legs yellowish to formly light fuscous, veins reddish; an brown; femora uniformly brownish, with- opaque, white, callous mark bordering api- out bands, apices paler; tibiae pale yellowish, cal angle of larger areole. spines brown; tarsi brownish, apices fuscous. FEMALE.-Length 3.60, width 1.60. Slight- FEMALE.-Length 5.00, width 2.16. More ly more robust than male, but very similar robust than male but very similar in color in pubescence and coloration. and pubescence. HOSt PLANTS.-Red cedar (Juniperus HOST PLANT. - Hornbeam (Carpinus virginiana) and arbor vitae (Thuja occi- caroliniana). dentalis). KNOWN DISTRIBUTION.-Illinois, Iowa, KNOWN DISTRIBUTION.-District of Co- Minnesota. lumbia, Georgia, Illinois, Iowa, Kansas, Illinois Record. - DOLSON: June 14, Maryland, Minnesota, Mississippi, New 1933, Frison & Ross, 1 . Jersey, New York, Ohio, Virginia. Illinois Records.-CAVE-IN-ROCK: Oct. Dichrooscytus Fieber 2, 1934, Frison & Ross, I A, 3 9. MUNCIE: Sept. 20, 1935, Frison & Mohr, 1 9. KEY TO SPECIES Dichrooscytus viridicans 1. Length less than 4.00 ...... 2 Knight Length 4.80 or greater...... 3 Dichrooscytus viridicans Knight (1918d, 2. Width of vertex greater than length of p. 114). first antennal segment; hemelytra MALE.-Length 3.20, width 1.25. Head reddish; length 3.50-3.70.... width 0.75, vertex 0.26. Rostrum, length 0.95, just attaining posterior margins of hind ..tinctipennis, p. 165 Vertex narrower, its width less than length of first antennal segment; dorsum uniformly green; length 3.20- 3.40.viridicans, p. 165 3. Paracuneus pale to white; length of first antennal segment less than width of vertex; length 4.80-5.30. . .suspectus, p. 166 Paracuneus reddish; length of first antennal segment equal to or greater than width of vertex; length 5.50- 5.80.rufipennis, p. 166 Dichrooscytus tinctipenuls Knight Dichrooscytus elegans Knight (1923d, p. 597), not Uhler. Dichrooscytus tinctipennis Knight (1927b, p. 15). MALE.-Length 3.70, width 1.50. Head width 0.83, vertex 0.36. Rostrum, length 1.18, scarcely attaining posterior margins of hind coxae. Antennae, first segment, length 0.33, less than width of vertex; second Fig. 166.-Dichrooscytus viridicans, 9. 166 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. I coxae. Antennae, first segment, length 0.32; Rostrum reaching slightly beyond second, 1.22; third, 0.56; fourth, 0.38. Pro- posterior coxae; body yellowish notum, length 0.56, width at base 1.03, with brown, with darkened areas; cuneus black, conspicuous pubescence. General color usually red, rarely paler...... 3 bright green; head, coxae and femora often 3. Hemelytra mostly yellowish...... becoming pale to brownish; cuneus green, s var. asal s . 167 . . . b .... asali b i , p apical halves of margins reddish; membrane Hemelytra mostly very dark brown, fuscous, cell veins sometimes reddish. almost black...... FEMALE.-Fig. 166. Length 3.30, width b var. us a us . 167 . t .... asalis f c , p 1.40; slightly more robust than male, but 4. Rostrum reaching beyond anterior not differing in coloration. 5 (Juniperus margins of middle coxae ...... HOST PLANTS.-Red cedar Rostrum not reaching posterior mar- virginiana) and arbor vitae (Thuja occiden- ...... 6 talis). gin of mesosternum KNOWN DISTRIBUTION.-District of Co- 5. Rostrum attaining hind margins of lumbia, Illinois, Indiana, Iowa, Minnesota, middle coxae; dorsum black, nar- Mississippi, New York, Ohio. row area at apex of cuneus and slen- Illinois Records. - Seventy-one males der line on either side of fracture Aug. 28, pale; tibiae uniformly black...... and 101 females, taken May 27 to 168 are from Antioch, Apple River Canyon State ...... proxim... us, p. Park, Elizabethtown, Ernst, Freeport, Ga- Rostrum just attaining middle of in- lena, Golconda, Grandview, Grayville, termediate coxae; dorsum black and Hillsboro, Kampsville, Keithsburg, Lake pale brown; tip of scutellum and Monticello, Oquawka, Starved Rock basal angle of corium pale; cuneus Villa, yellowish, red and black...... State Park, Urbana, White Pines Forest 167 State Park. unifasciatus var. lateralis, p. 6. Rostrum nearly attaining posterior 7 Dichrooscytus suspectus Reuter margin of mesosternum ...... Rostrum not reaching beyond middle Dichrooscytus suspectus Reuter (1909, p. 37). of mesosternum ...... 8 Not yet collected in Illinois, but should 7. Legs rather uniformly reddish yellow, .occur here. Known from Connecticut, Colo- but hind femora with a small group rado, District of Columbia, Indiana, Maine, of fuscous points on anterior face at Maryland, Massachusetts, New Jersey, middle of apical half; cuneus with New York. Its host plants are pines (Pinus outer edge pale brown...... resinosa and P. virginiana). .n...... PUnctipes, p. 169 Tibiae black, femora black on apical Dichrooscytus rufipennis (Fallen) half of dorsal aspect; cuneus uniformly red orange ..... illini, p. 168 Lygaeus rufipennis Fallen (1807, p. 84). 8. Tibiae reddish yellow or with broad, A European species known from New pale areas ...... 9 York; may have been imported with the Tibiae black, rarely with some yellow- Scotch pine (Pinus sylvestris), on which it ish ...... 12 feeds. Not yet taken in Illinois. 9. Legs mostly red, with apical one-third of femora black; tibiae yellowish, Polymerus Hahn with apices and variable basal area black; second antennal segment KEY TO SPECIES yellowish with apex very dark 1. Rostrum reaching hind coxae, or brown . . venustus, p. 170 orange or fulvous . 10 slightly beyond ...... 2 Legs yellow Rostrum not reaching hind coxae .... 4 10. Hemelytra uniformly black; length of 2. Rostrum scarcely attaining hind mar- second antennal segment equal to gins of posterior coxae; dorsum width of pronotum at posterior black and pale brown; femora with margin...... nubilipes, p. 170 halves fulvous, tibiae pale. . . Cuneus and embolium of hemelytra apical 11 . nigropallidus, p. 167 pale or fulvous ...... September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 167'

11. Pubescence on dorsum deep golden; form of this species, variety fuscatus Knight tibiae without black spot at base... (1926f, p. 167), has not been taken in Illi-

...... fulvipes, p. 170 nois. Pubescence on dorsum silvery white; FOOD PLANTS. Dog fennel (Anthemis tibiae with black spot at base..... cotula); Illinois specimens were collected ...... severini, p. 170 also on plantain (Plantago aristata), daisy 12. Rostrum scarcely attaining hind mar- (Chrysanthemum sp.), sunflower (Helian- gins of front coxae...... 13 thus sp.), oak(Quercus sp.), tickweed (Co- Rostrum reaching behind posterior reopsis sp.); the oak record was certainly a margins of front coxae, or nearly "sitting" record. to middle of mesosternum ...... 14 KNOWN DISTRIBUTION.-Common in the 13. Hemelytra uniformly black; dorsum eastern United States. clothed with silvery, silky pubes- Illinois Records.-Two hundred ten cence. gerhardi, p. 171 males and 176 females, taken May 18 to Hemelytra with embolium and edge Oct. 12, are from Albion, Algonquin, Alton, of cuneus pale; dorsum clothed with Antioch, Bloomington, Champaign, Chicago, golden, silky pubescence...... Darwin, Delavan, Dubois, Elizabethtown, Elmira, Farmer City, Freeport, Galesburg, ...... breviroStris, p. 170 14. Cuneus black; second antennal seg- Grand Tower, Grayville, Herod, Karnak, ment of male as thick as first seg- Lawrenceville, M c H e n r y , Metropolis, ment; coxae yellow in both sexes; Monticello, Mount Carmel, Muncie, Pax- dorsum black with scutellum and ton, Rockton, Savanna, Seymour, Shawnee- hemelytra clothed chiefly with black town, Springfield, Starved Rock State Park, pubescence ...... opacus, p. 170 Urbana, West Union. Cuneus yellowish or red ...... 15 15. Embolium black; cuneus orange; Polymerus nigropallidus Knight coxae of male black, of female yel- Polymerus nigropallidus Knight (1923d, p. low; dorsum clothed with silvery, 599). silky pubescence. . venaticus, p. 169 Known only from New Jersey. Embolium pale brown to red... s. .. .16 16. Femora deep red, only narrow band Polymerus unifasciatus (Fabricius) at apices black; tarsi black; embolium and cuneus deep red...... Lygaeus unhjasciatus Fabricius (1794, p. .chrysopsis,...... p. 171 178). Femora deep yellow, apical one-third MALE.-Length 5.60, width 2.60. Head black, a pale fascia showing on width 1.04, vertex 0.47. Rostrum, length anterior aspect; tarsi mostly yellow, 1.56, reaching to middle of intermediate with apical segment and claws coxae. Antennae, first segment, length 0.56; black; embolium pale brown to second, 2.08, black, with basal half dusky yellow; cuneus orange...... brown; third, 0.82; fourth, 0.78. Pronotum, ...... flavocostatus, p. 168 length 1.04, width at base 1.86. Clothed with golden, sericeous, tomentose pubes- Polymerus basalis (Reuter) cence, intermixed with blackish hairs. Ground color black; apex of scutellum, Poeciloscytus basalis Reuter (1876, p. 73). basal angle of corium, anal ridge and area ADULTs.-Length 3.70-4.80, width 1.70- at inner angle of corium, apex of embolium 2.30. General color pale brown to yellowish, and area of corium bordering cuneus, base darkened with fuscous and black; hemelytra and apex of cuneus, tibiae, apical one-third mostly yellowish, with clavus and apical half of front and middle femora, pale to testa- of corium chiefly fuscous; scutellum black, ceous; cuneus with inner half red, outer variable area at apex not so dark; cuneus margin black except at base and apex; red; sometimes embolium and legs tinged membrane fuscous, veins and central area with reddish; posterior femora with two less dark; a small clear spot bordering apex subapical fuscous bands; dorsum clothed of cuneus. with silvery, silky pubescence that appears FEMALE.-Length 5.20, width 2.65; very golden yellow in certain lights. A very dark similar to male in color and pubescence. 168 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. I

All North American specimens of this MALE.-Length 4.85, width 2.50. Head species are referable to the variety lateralis width 1.18, vertex 0.44; black, a glabrous, Hahn (1834, p. 85). The typical unifascia- pale spot either side of vertex. Rostrum, tus has the pale areas broader than does uni- length 1.43, just attaining posterior margin fasciatus lateralis; the embolium and corium of mesosternum. Antennae black with last of this variety are pale brown except for two segments yellow; first segment, length a small fuscous patch on the apical area of 0.44, thickness 0.15; second, length 2.29, the corium. thickness 0.15, cylindrical; third, length FOOD PLANT.-Northern bedstraw (Ga- 0.65; fourth, 0.62. Pronotum, length 1.17, lium boreale). width at base 2.03; black., narrow basal KNOWN DISTRIBUTION.-This is a Eu- and ventral edge pale. Clothed with silvery, ropean species, now known from Alberta., sericeous pubescence intermixed on hemely- British Columbia, Colorado, Illinois, Iowa, tra with simple, black pubescence. General Maine, Minnesota, New York, North Da- color black, embolium pale, cuneus and tip kota, Nova Scotia, Quebec. Blatchley of embolium orange colored; membrane (1926b, p. 737) records this from Cham- black, narrow pale area bordering cuneus; paign, Ill., June 14, at light, under the name veins yellowish. Tibiae black, slightly pale Polymerus unifasciatus (Fabricius). Speci- near base; femora orange colored, apical mens of the typical form from North Amer- half black on dorsal aspect, dark color ica have not been seen by the writer. broken by an incomplete annulus of orange which does not cross dorsal surface; coxae Polymerus flavocostatus Knight pale to orange, infuscated at base; tarsi yellow, apical segment and claws black. Polymerus flavocostatus Knight (1926f, p. FEMALE.-Length 5.50, width 2.77. Head 165). width 1.22, vertex 0.56. Antennae, first seg- FEMALE.-Length 5.00, width 2.30. Head ment, length 0.45, width 0.16; second, 2.08, width 1.06, vertex 0.54. Rostrum, length thickness 0.10; third, 0.77; fourth, 0.78. Pro- 1.11, extending slightly beyond anterior notum, length 1.21, width at base 2.25. coxae, or to middle of mesosternum; first More robust than male, but very similar in and second segments chiefly yellow. Anten- coloration and pubescence. nae black, with third segment yellowish; Holktype, male.-Oak Lawn, Ill.: July first segment, length 0.51; second, 1.80; 1, 1935, DeLong & Ross. third, 0.86. Pronotum, length 1.02, width at Allotype, female. -Onarga, Ill.: June base 1.70. Townsend. MALE.-Length 5.70, width 2.30. Head 8, 1933, Mohr & Paratypes. -ILLINoIS.-Same data as width 1.06, vertex 0.46. Antennae, first seg- 9 ment, length 0.53; second, 1.86. Hemelytra for holotype, 1 ; NORTHERN ILLINOIS: colored as in female; coxae orange yellow, 2 , 19. or dusky only at base, similar to female. Polymerus proximus Knight FOOD PLANT.-Goldenrod (Solidago sp.). KNOWN DISTRIBUTION.-Illinois, Iowa, Polymerus proximus Knight (1923d, p. 601). Missouri, Nebraska, North Dakota.. This is closely related to nigritus Illinois Records. - CHAMPAIGN: June (Fallen), but may be distinguished from it 15, 1888, C. A. Hart, I a. GALESBURG: by the uniformly dark tibiae; the length of June 18, 1893, 1 i. OAK-WOOD: June 14, the first antennal segment is equal to the 1930, T. H. Frison, on Solidago sp., 1 a, width of the vertex, while in nigritus the 1 Y. URBANA: June 17, 1889, Marten, 1 9; length of the first segment is less than the June 19, 1889, C. A. Hart, 1 A. WEST width of the vertex. PULLMAN: July 30, 1905, W. J. Gerhard, MALE.-Length 5.30, width 2.70. Head 1 9, FM. mostly black with a yellow spot on either side of vertex near eye. Rostrum barely at- Polymerus illini new species taining hind margins of middle coxae. An- tennae, first segment black; second very This differs from flavocostatus Knight by dark brown, black at base; third dark the longer rostrum, and from punctipes brown; fourth black. Pronotum with pos- Knight by the black tibiae, the partly black terior half of disk strongly convex, trans- femora and the red orange cuneus. versely wrinkled, uniformly black, slightly September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 169 shining; clothed with yellowish, sericeous Illinois Records.-Eleven males and 24 pubescence. Scutellum deep black, slender females, taken May 17 to July 4, are from area at apex yellowish. Sternum and pleura Antioch, Champaign, Cypress, Elizabeth- black; ostiolar peritreme pale brown to yel- town, Freeport, Galena, Oakwood, Odin, lowish. Hemelytra black; slender area at Palos Park, St. Anne, Urbana. tip of embolium, and narrow areas at base and apex of cuneus, pale; slightly shining, Polymerus punctipes Knight clothed with intermixed yellowish and black pubescence; membrane and veins uniformly Polymerus punctipes Knight (1923d, p. 602). dark fuscous. Legs usually uniformly black; MALE.-Length 4.60, width 2.00. Head in paler forms, tibiae uniformly very dark width 0.97, vertex 0.47; head black, with a brown, but never with indication of annula- yellow spot on either side of vertex at bor- tions. Venter uniformly black, clothed with der of eye; pubescence yellowish. Rostrum, pale brown to yellowish pubescence. length 1.23, almost attaining hind margin FEMALE.-Length 5,30, width 2.80; em- of mesosternum, yellowish, apex black. An- boliar margins more strongly arcuate than tennae, first segment, length 0.51, black, in male, but general coloration similar. narrow yellowish area at base; second, 1.85, HOST PLANT.-Bedstraw nearly cylindrical, slightly thicker at middle, (Galium apar- nearly equal in thickness to first segment, ne). black, clothed with mixed black and pale KNOWN DISTRIBUTION.-Illinois, Iowa, pubescence; third, 0.66, yellowish, with Kansas, Minnesota, Missouri, Nebraska, dusky tinge; fourth, 0.80, dusky. Pronotum, Ohio, Ontario, Pennsylvania. length 1.00, width at base 1.70; black, slight- Illinois Record.-RocK CITY: May 30, ly shining, disk transversely rugulose; 1938, Mohr & Burks, 2 , . clothed with pale and yellowish, sericeous pubescence. Scutellum black, transversely Polymerus venaticus (Uhler) rugulose; clothed with yellowish pubescence, Poeciloscytus venaticus Uhler (1872, p. 414). more sericeous on basal angles. Sternum MALE.-Length 5.90, width 2.30. Head and pleura black; ostiolar peritreme yellow, width 1.04, vertex 0.46. Rostrum, length becoming dusky on anterior lobe. Hemely- 1.09, just attaining middle of sternum; pice- tra, with emboliar margins slightly arcuate ous, only slightly paler at joints. Antennae, on apical half; black; embolium and outer second segment, length 2.31, cylindrical, not margin of cuneus yellowish or fulvous; sur- equal in thickness to first segment. Hemely- face scabriculous, slightly shining, clothed tra elongate, tip of abdomen attaining mid- with golden, sericeous pubescence intermixed dle of cuneus, emboliar margins very slightly with darker hairs. Membrane rather uni- arcuate; black, moderately shining; thickly formly fusco-brownish, a small, nearly clear clothed with sericeous, pale pubescence, a spot bordering apex of cuneus, veins yellow- few black hairs on embolium and cuneus; ish. Legs fulvous, with spot at apices of fe- cuneus fulvous or reddish. Legs black, with mora and apical segment of each tarsus basal halves of hind and middle femora, an- black; hind femora with a group of from terior face of front femora except at apex, two to five fuscous points on anterior face and two basal segments of tarsi, yellow. at middle of apical half, a prominent hair FEMALE.-Length 5.00, width 2.57; em- rising from each of the two lower points; boliar margins strongly arcuate; shorter, pubescence pale brown to yellowish, black more ovate and robust than male; coloration on apical halves of femora. Venter black, very similar to that of male, but coxae al- clothed with pale brown to yellowish pubes- ways yellowish except for spot at base. cense. HOST PLANT.-Goldenrod (Solidago al- FEMALE.-Length 5.20, width 2.40; em- tissima). boliar margins strongly arcuate *on apical KNOWN DISTRIBUTION.-Alberta, British half; pubescence and color similar to those Columbia, Colorado, Connecticut, District of male. Rostrum, length 1.31, nearly at- of Columbia, Idaho, Illinois, Iowa,. Maine, taining hind margin of sternum. Maryland, Massachusetts, Michigan, Min- FooD PLANT.-Loosestrife (Lysimachia nesota, Nebraska, New Hampshire, New quadrifolia). York, North Dakota, Ohio, Ontario, Penn- KNOWN DISTRIBUTION.-District of Co- sylvania, Quebec, Vermont. lumbia, Florida, Georgia, Illinois, Iowa, 170 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. 1

Maine, Maryland, Minnesota, New York, on pronotal disk. Sternum and pleura black; Ohio, Ontario, Quebec. ostiolar peritreme yellowish to reddish. Illinois Records.-Twelve males and 19 Hemelytra with emboliar margins moder- females, taken May 21 to June 24, are from ately arcuate; black, opaque, surface rather Dolson, Dubois, Elizabethtown, Golconda, irregularly roughened, somewhat scabricu- Herod, Mound City, Mount Carmel, Oak- lous; clothed with golden and dusky seri- wood, Pulaski. ceous pubescence. Membrane uniformly dark fuscous; area bordering apex of cuneus Polymerus fulvipes Knight slightly paler, veins yellowish. Legs with coxae and basal half of femora deep, trans- Polymerus fulvipes Knight (1923d, p. 603). lucent red; lateral areas of coxae, with apex Known from Connecticut, Massachusetts, of front pair also, becoming fuscous; apical New York, North Carolina, Pennsylvania. one-half to one-third of femora black, Not yet collected in Illinois. blackish cloud formed on anterior face of front pair near base; tibiae yellowish to ful- Polymerus severini Knight vous, basal one-third and apices black; tarsi yellowish, apical half of third segment fus- Polymerus severini Knight (1925, p. 247). cous. Venter black, clothed with sericeous, No Illinois specimens; known from Al- silvery pubescence; genital segment with berta, Minnesota, South Dakota. simple, dusky yellowish hairs. FEMALE.-Length 5.70, width 2.60. Em- Polymerus nubilipes Knight boliar margins more strongly arcuate apically. More robust than male, but very simi- Polymerus nubilipes Knight (1925, p. 248). lar in coloration. First antennal segment as Known only from Minnesota and Wis- thick as that of male, but second segment consin; not yet taken in Illinois. slightly more slender. HABITS.-Collected on willow (Salix sp.). Polymerus opacus Knight KNOWN DISTRIBUTION.- Florida, Illi- nois, Michigan, North Carolina, Ohio, South Polymerus opacus Knight (1923d, p. 604). Carolina, Virginia. Not taken in Illinois; known from Maine, Illinois Records.-GOLCONDA: June 22, Ontario, New York, Vermont. Feeds on 1932, on Salix sp., Ross, Dozier & Park, 1 a, aster (Aster umbellatus). 1 9. PULASKI: May 28, 1909, cypress swamp, 1 d. Polymerus venustus Knight Polymerus venustus Knight (1923d, p. 605). Polymerus brevirostris Knight MALE.-Length 5.20, width 2.30. Head Polymerus brevirostris Knight (1925, p. 246). width 1.01, vertex 0.38; head black; a yel- MALE.-Length 4.50, width 2.20. Head low spot on either side of vertex bordering width 0.97, vertex 0.43. Rostrum, length eye; lower margin of jugum and upper mar- 0.88, not reaching hind margins of front gin of lorum red; clothed with sericeous, coxae, reddish to fuscous. Antennae, first pale pubescence. Rostrum, length 1.14, segment, length 0.46, thickness 0.14, black; scarcely exceeding posterior margins of second, 1.74, thickness 0.11, cylindrical, front coxae, piceous, paler at joints. An- slightly constricted near base, black; third, tennae, first segment, length 0.81, black, un- 0.71, orange yellow, fuscous apically; fourth, usually long and thick (0.15 thick); second, 0.93, fuscous, yellowish at base. Pronotum, 2.06, cylindrical, thickness 0.07, yellowish, length 0.96, width at base 1.80; basal mar- apical one-third black, pubescence same gin with a slender yellowish area; xyphus color as surface beneath; third, 1.02, slender, reddish. Body clothed with golden yellow, yellowish to fuscous, darker apically; fourth, sericeous pubescence, silvery beneath, this 1.03, blackish. Pronotum, length 1.03, width pubescence intermixed with pale and fus- 1.74; surface minutely granulate and trans- cous, simple hairs; femora with pale pu- versely wrinkled; clothed with yellowish to bescence. General color black; embolium golden, silky pubescence; black, lower and usually slender outer margin of cuneus pleural margin with a slender reddish area. yellowish; membrane black, veins yellowish. Scutellum black, surface and pubescence as Legs orange to red; tibiae, tarsi and apices September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 171 of femora black; hind femora with indica- in the leaf axil of the golden aster. Many' tion of a subapical, fuscous band on anter- other mirids are so colored as to be simi- ior aspect. larly inconspicuous when they are on their FEMALE.-Length 5.09, width 2.60. Very normal host plants. similar to male in pubescence and colora- KNOWN DISTRIBUTION.-Illinois, Iowa, tion. Manitoba, Minnesota, North Dakota, South KNOWN DISTRIBUTION.-Illinois, M ani- Dakota. toba, Michigan, Minnesota, North Dakota, Illinois Record.-ALDRIDGE: May 8, South Dakota, Wisconsin. 1932, H. L. Dozier, I a. Illinois Record.-GALESBURG: June 28, 1893, 1 ,2Q. Polymerus gerhardi Knight Polymerus gerhardi Knight (1923d, p. 606). Polymerus chrysopsis Knight FEMALE.-Length 6.40, width 2.80. Head Polymerus chrysopsis Knight (1925, p. 245). width 1.16, vertex 0.51; head black, vertex MALE.-Length 5.70, width 3.60. Head pale on either side; clothed with sericeous, width 1.17, vertex 0.48; head black, with a white pubescence. Rostrum, length 1.08, not rounded, yellowish spot on either side of attaining hind margins of front coxae, pice- vertex near eye. Rostrum, length 1.24, ous, basal segment and joints reddish. An- reaching slightly beyond middle of mesoster- tennae, first segment, length 0.64, thickness num; blackish; first and second segments 0.14, black; second, 2.03, thickness 0.09, cy- more or less reddish. Antennae black, lindrical, black, with rather closely set, clothed with short, mixed pale and fuscous black pubescence; third, 0.96, fusco-brown- pubescence; first segment, length 0.45, thick- ish; fourth, 0.88, fuscous. Pronotum, length ness 0.14; second, length 2.06, cylindrical, 1.24, width at base 2.14; black, scarcely thickness 0.12; third, length 0.66; fourth, shining, rather irregularly rugulose; thickly length 0.63. Pronotum, length 1.17, width clothed with sericeous, white pubescence; at base 2.06. Body clothed with silvery margins of xyphus, and narrow area along white pubescence intermixed with suberect, lower margins of pleura, yellowish. Scutel- pale yellowish pubescence. General color lum black, pubescent as on pronotal disk. black, moderately shining, with embolium Sternum and pleura black; ostiolar peri- and variable area at apex of corium and treme yellowish. Emboliar margins moder- cuneus, blood red; coxae and femora red; ately arcuate. Hemelytra black, thickly apices of femora and tibiae black; trochan- clothed with sericeous, white pubescence in- ters and extreme bases of coxae sometimes termixed with more erect, simple, black fuscous; posterior femora often with a black hairs. Membrane and veins uniformly very patch on dorsal surface before black apex, dark brown, slightly paler bordering apex also two small dots of black on ventral as- of cuneus. Legs with femora deep red; pect. coxae tending toward yellowish or orange; FEMALIE.-Length 5.50, width 2.80. Very tips of femora, tibiae, and tarsi, black; tibiae similar to male in pubescence and coloration. unusually thick, 0.17; spines and pubescence Antennae black, last two segments dark also black. Venter black, thickly clothed brownish. with sericeous, white pubescence intermixed HOST PLANT.-Golden aster (Chrysopsis with more nearly erect, dark hairs. villosa). MALE.-Length 4.70, width 2.00. Anten- This is the most beautiful species of nae, first segment, length 0.52; second, 2.03, Polymerus, the bright red of the embolium, thickness 0.13; third, length 0.82; fourth, cuneus and femora, standing in brilliant con- length 0.86. Smaller than female, but very trast with the black body. Strange to say, similar in pubescence and coloration. the contrasting red and black colors make KNOWN DISTRIBUTION.-Described orig- the insect difficult to see when it is on its inally from specimens from Lake County, host plant. When disturbed, the adult bug Indiana, and Texas. Since being described, usually rushes to the base of a leaf petiole, this species has also been collected in Illi- where it clasps its legs about the reddish nois, Mississippi, Oklahoma. stem of the plant in such a way that the Illinois Records. - ASHLEY: Aug. 7, black body with its covering of silvery pu- 1917, 1 ', I 9 . SAVANNA: June 29, 1935, bescence suggests, at first glance, a bud DeLong & Ross, 1 d. 172 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. 1

Poecilocapsus Reuter Golconda, Grand Detour, Hardin, Havana, Joliet, Kankakee, Karnak, Manito, Morton Poecilocapsus lineatus (Fabricius) Grove, Mount Carmel, Oakwood, Odin, Palos Park, Quincy, Rockford, Rockton, Four-Lined Plant Bug Urbana, Vienna, Villa Ridge, Volo, War- Lygaeus lineatus Fabricius (1798, p. 541). saw, Waukegan, Willow Springs. ADULT.- Fig. 167. Length 7.00-7.50, width 3.50. General color yellow or green Horcias Distant yellow, with four black lines on the dor- KEY TO SPECIES 1. Second antennal segment clavate, its maximum diameter exceeding diameter of first segment; embolium white, cuneus rose colored.; see frontispiece ...... illini, p. 172 Second antennal segment slightly clavate, but its maximum diameter less than diameter of first segment ...... 2 2. Rostrum not surpassing posterior margins of middle coxae; color black with scutellum frequently red. fallax, p. 173 Rostrum extending nearly to posterior margins of hind coxae; color variable .dislocatus, p. 173 Horcias illini new species This species is allied to dislocatus (Say), but differs from it in being smaller, and in having a narrower vertex and more strongly clavate second antennal segment; in color, it is very similar to dislocatus flavidus Knight, but the cuneus, calli and head are distinctly reddish; the color pattern apparently is not variable. Fig. 167.-Poecilocdpsus lineatus. MALE.-Frontispiece. Length 5.20, width sum; certain specimens have the yellow of 2.70. Head width 1.12, vertex 0.43. Ros- the hemeleytra replaced by bright green. trum, length 1.95, nearly attaining hind mar- HOST PLANTS.-A large number of her- gins of middle coxae. Antennae, first seg- baceous plants, especially dock (Rumex sp.); ment, length 0.74, thickness 0.14, black; occasionally becomes a pest on currant second, 1.86, thickness 0.15, slender at base bushes (Ribes sp.). Large numbers of speci- (0.07 thick), gradually enlarging to clavate mens were collected in Illinois on potato on apical half (0.15 thick), black, densely foliage (Solanurm tuberosurm). clothed with short, velvety, yellowish pu- KNOWN DISTRIBUTION. - Throughout bescence; third, length 0.82, basal one-fourth most of the eastern states and Canada. widened and pale brown, distal part slender Illinois Records.-Sixty-eight males, 129 and black; fourth, length 1.04, slender, black, females and 16 nymphs, taken May 7 to Sep- with narrow, tan area at base. Pronotum, tember, are from Algonquin, Anna, Antioch, length 1.21, width at base 2.04. Surface of Beach, Bishop, Bluff Springs, Carbondale, body smooth and shining; dorsum with Carlinville, Champaign, Chicago., Clarks- sparse and very fine pubescence. General ville, Cypress, Danville, Edgebrook, Eliza- coloration black and white with lighter areas bethtown, Fountain Bluff, Frankfort, Free- tinged with reddish. Head yellowish to red- port, Galena, Galesburg, Giant City State dish brown, frons with transverse reddish Park, Makanda, Glendon Park, Glen Ellyn, lines on either side. Pronotum white, a large September, 1941 KNIGHT: PLANT BUGS, OR' MIRIDAE, OF ILLINOIS 173 quadrate, black area on either side behind tirely black. A large number of color com- calli, leaving median line, lateral margins of binations of this species have been given disk, and narrow area at basal edge, white; varietal names. The Illinois material con- calli and area extending along lateral mar- tains representatives of the following in ad- gins of disk irregularly marked with red- dition to the typical form: rubellus Knight dish; propleura with two reddish rays ex- (1923d, p. 608), goniphorus (Say) (1832, p. tending parallel to margins of disk. Meso- 21), gradus Knight (1923d, p. 609), residuus scutum and scutellum black, median line Van Duzee (1912, p. 484), coccineus (Em- white. Hemelytra black, broad white area mons) (1854, pl. 30, fig. 2), limbatellus along claval vein; claval suture black only (Walker) (1873, p. 93), affilnis (Reuter) on basal half; embolium, narrow area along (1876, p. 74), flavidus Knight (1923d, p. radial vein, and wedge-shaped area on inner 609), scutatus Knight (1923d, p. 609), pal- apical area of corium, white; cuneus red- lipes Van Duzee (1912, p. 484), and nigritus dish, apex blackish, outer basal angle pale. Reuter (1909, p. 41). Two other varieties, Membrane uniformly dark brown. Ventral nigriclavus Knight (1923d, p. 609) and mar- surface reddish brown to black, a white line ginalis (Reuter) (1876, p. 75) have not been formed on either side of venter; also white recognized in the material collected here. mark extending across dorsal half of ostiolar FOOD PLANTS. - False Solomon's seal peritreme and side of sternum. Legs pale to (Smilacina racemosa), wild geranium (Ger- dark brown; coxae reddish brown; femora anium maculatum), figwort (Scrophularia paler on apical half, annulated with yellow- leporella) and. occasionally papoose root ish and brown near apices; tibiae pale, tips (Caulophyllum thalictroides). A few Illi- and knees dark, spines black; tarsi mostly nois specimens were collected also on clover pale, black apically. (Melilotus sp. and Trifolium sp.), oak FEMALE.-Length 5.80, width 3.10. Head (Quercus sp.) an4 fleur-de-lis (Iris sp.). width 1.25, vertex 0.49. Antennae, first The different color varieties of this species segment, length 0.82; second, 2.12, greatest may occur on any of these food plants. thickness 0.15, clavate as in male; third, KNOWN DISTRIBUTION.-Known in its length 0(.86. Pronotum, length 1.38, width various color forms from Maine westward at base 2.42. More robust than male, but to Minnesota and southward to Pennsyl- very similar in color and pubescence. vania and Texas. Holotype, male. - Dongola, Ill.: May Illinois Records. - One hundred forty 12, 1916. males, 155 females and 4 nymphs, collected Allotype, female.- Same data as for May 21 to June 30, are from Algonquin, holotype. Antioch, Beach, Bloomington, Castle Rock, Paratypes.-ILLINoIs.-DONGOLA: May Champaign, Danville, Dubois, Elizabeth, 9, 1916, 1 & ; May 12, 1916, 1 ; May 13, Frankfort, Freeport, Galesburg, Glendon 1916, 1 a, 1 9. Park, Glen Ellyn, Grand Detour, Herod, The apparently restricted distribution of Homer, Joliet, Keithsburg, Le Roy, Manito, this beautiful new species seems worthy of Monticello, Mount Carmel, Muncie, Oak- remark. Future collections of specimens will wood, Oregon, Palos Park, Pecatonica, Riv- be received with great interest. erdale, St. Joseph, Springfield, Stratford, Urbana, Waukegan, White Heath, White Horcias dislocatus (Say) Pines Forest State Park, Willow Springs, Zion. Capsus dislocatus Say (1832, p. 21). ADULTs.-Length 6.20, width 3.00. Gen- eral color of typical form pale rufo-sangui- Horcias fallax Reuter neous. First and second antennal segments, Horciasfallax Reuter (1909, p. 42). tylus, juga, base of vertex, two wedge- MALE.-Length 5.10, width 2.10. Head shaped approximate spots on basal half of width 1.08, vertex 0.41. Rostrum, length pronotal disk, scutellum except median line, 1.86, just attaining posterior margins of inner half of clavus, inner apical angles of middle coxae. Antennae, first segment, corium, membrane, pleura, middle and hind length 0.60, thickness 0.12; second, 1.99, coxae, and the venter, black. thickness 0.11; third, length 0.80; fourth, This species varies in color from yellow length 0.95. Pronotum, length 1.08, width and brown, through red and black, to en- at base 1.86. General color black, shining, 174 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. I

nearly glabrous; scutellum either red or, is replaced by superbus Uhler, a quite vari- black. Propleura yellowish; rarely anterior able species. half of pronotum yellowish. Legs mostly Illinois Records.-Two hundred forty- yellowish with basal halves of middle and two males, 253 females and 1 nymph, col- hind coxae, tips of tibiae, and apical seg- lected May 15 to Nov. 4, are from Albion, ment' of each tarsus, black; hind femora Algonquin, Allerton, Alton, Anna, Antioch, often with two fuscous annulations just before apex; membrane and veins uniformly dark fuscous or black. FEMALE.-Length 5.40, width 2.43. Some- what more robust than male, but very similar in coloration. HOST PLANTS.-A good series of nymphs and adults were taken on wild gooseberry (Ribes oxyacanthoides) in Iowa, May 18 to 25; a few Illinois specimens were collected on willow (Salix sp.) and oak (Quer- cus sp.). KNOWN, DIsTRIBUTION.-Illinois, Indi- ana, Iowa, Ohio, Pennsylvania, Wisconsin. Illinois Records.-Five males and 12 females, taken May 9 to June 30, are from Algonquin, Dongola, Galesburg, Glen Ellyn, Urbana, White Heath, Willow Springs. ft3L~~~~~~~~~M~ Adelphocoris Reuter KEY TO SPECIES Hemelytra dark brown, broad pale area at costal margin, fig. 168; scutellum uniformly dark brown, leng h 6.80-7.40... .rapidus, p. 174 Hemelytra pale, costal edge black; scutellum light with two dark longitudinal lines; usually apical area of corium darkened, fig. .169; length 8.00...... Fig. 168.-Adelphocoris rapidus. .. ineolatus, p. 175 Arcola, Aurora, Beardstown, Beach, Bloom- Adelphocoris rapidus (Say) ington, Blue Island, Bluff Springs, Borton, Browns, Bushnell, Carbondale, Champaign, Capsus rapidus Say (1832, p. 20). Chicago, Darwin, Delavan, Dixon, Dolson, ADULTS.-Fig. 168. Length 6.80-7.40. I)ubois, Last St. Louis, Elgin, Elizabeth- General color dark brown. Embolium and town, Erie, Fairmount, Farmer.Cky, Foun- outer margin of cuneus light brown; prono- tain Bluff, Freeport, Galena, Galesburg, tum yellowish brown, basal half of disk us- Giant City State Park, Makanda, Glencoe, ually with two black spots; these spots some- Glen Ellyn, Golconda, Grand Detour, times fuse to form a transverse black mark. Grand Tower, Grand View, Hamilton, HOST PLANTS.-Ordinarily breeds on Hardin, Hartsburg, Havana, Herod, Hilli- dock (Rumex sp.) in the northern states, -ary, Hinsdale, Homer Park, Iroquois, but may breed on several other plants; Illi- Jonesboro, Kankakee, Karnak, Keithsburg, nois specimens have been collected on clover .Lawrenceville, Mahomet, Marshall, Mason (Trifolium sp. and Melilotus sp.) and yar- City, Metropolis, Milford, Monticello, row (Achillea sp.). Mound City, Mount Carroll, Muncie, KNOWN DISTRIBUTION.-A common spe- Normal, Oak. Lawn, Oakwood, Ogden, cies in the eastern states and those west- Oquawka, Oregon, Palos Park, Pecatonica, ward to the 100th meridan; farther west it Princeton, Pulaski, Rockford, Rockton, St. September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 175

Anne, St. Joseph, Savanna, Seaton, Sey- yellowish; membrane fuscous. Antennae mour, Shawneetown, Sparta, Springfield, yellowish to brown, apical half darker and Starved Rock State Park, Sun Lake, To- usually reddish brown. Legs yellowish; fem- peka, Ullin, Urbana, Vandalia, Vienna, ora with many black dots, anterior aspect Virginia, Volo, Ware, Waterman, Watseka, with two rows of somewhat larger spots; Waukegan, West Union, Willow Springs, tibial spines black, without distinct spots York, Zion. at bases. Body clothed with simple, pale yellowish pubescence, legs provided with Adelphocoris lineolatus (Goeze) black pubescence. FEMALE.-Fig. 169. Length 7.50, width Alfalfa Plant Bug 2.90. More robust than male and usually somewhat paler in color, but otherwise very Cimex lineolatus Goeze (1778, p. 267). similar in form and coloration. MALE.-Length 8.00, width 2.80. Head HOST PLANTS.-Alfalfa (Medicago sa- width 1.36, vertex 0.42. Antennae, first seg- tiva) and sweet clover (Melilotus sp.); oc- ment, length 0.98; second, 2.87; third, 2.20; curs in limited numbers on other leguminous fourth, 1.30. Pronotum, length 1.30, width plants; also on many other succulent, herba- at base 2.25. General coloration pale yel- ceous plants. The bugs prefer to feed on lowish with a tinge of brown and dusky. flower buds and newly formed seeds, and Scutellum with two fine, longitudinal fus- may prove a pest where alfalfa and sweet cous marks on middle; corium" usually with clover are grown for seed. a triangular fuscous area on apical half; a KNOWN DISTRIBUTION. - A European fine line along costal edge black; cuneus species first recorded from North America at Cape Breton, Nova Scotia (Knight 1922a), and later from Ames, Iowa, where adults were first collected' June 18, 1929. They were probably imported- as eggs in seeds, as about 700 samples were-imported and grown at the agronomy farm at Ames in 1926 and 1927. The spread of this foreign species to surrounding states is indicated to a certain extent by the collection dates placed in parentheses following the names of these states: Iowa (1929), Minnesota (1934), Il- linois (1935), Missouri (1935), South Da- kota (1935), Nebraska (1936), Wisconsin (1936), Kansas (1939), Manitoba (1939). Illinois Records. - FREEPORT: June 28, 1935, DeLong & Ross, 2 a. RICHMOND: June 25, 1938,-at light, Ross & Burks, 1 . SAVANNA: June 29, 1935, DeLong & Ross,

217/ Stenotus jakovlev Stenotus binotatus (Fabricius) Lygaeus binotatus Fabricius (1794, p. 172). MALE.-Length 6.00, width 2.00. Chiefly yellowish green below; pronotum with two broad blank rays; hemelytra yellowish orange, with two broad, irregular, longitudinal black stripes. FEMALE.-Length 7.00, width 2.40; yellowish green, pronotum with two prominent black spots on disk, one behind each callus; Fig. 169.-Adelphocoris lineolalus. corium with a longitudinal fuscous stripe. 176 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. I

HOST PLANTs.-Orchard grass (Dacty- First antennal segment more pallid lis glomerata) and, to some extent, other than brown; gula and genae pallid grasses; Illinois specimens have been col- . palldulus var. albigulus, p. 178 lected on orchard grass and timothy 6. Length of first antennal segment equal (Phleum pratense). to or greater than width of head ... 7 KNOWN DISTRIBUTION. - A European Length of first antennal segment less species now known from British Columbia, than width of head...... 9 Illinois, Indiana, Iowa, Massachusetts, 7. Pronotum and scutellum with three Michigan, Minnesota, Missouri, New distinct yellowish stripes; first an- Hampshire, New Jersey, New York, North tennal segmen black, with few, if Ohio, Ontario, Oregon, Pennsyl- Carolina, any, pale spots..... trivittis, p. 178 vania, Quebec, Tennessee, Wisconsin. Pronotum and scutellum without dis- Illinois Records. -One hundred twenty- tinct stripes; first antennal seg- six males and 158 females, taken June 1 to ment pallid, marked with brown, or July 14, are from Antioch, Apple River brown with pallid marks...... 8 Canyon State Park, Bureau, Elizabeth, Ga- Marshall, 8. Apical half of second antennal Eeg- lena, Hamilton, Hardin, Karnak, ment black or very dark brown; Mason City, Monticello, Palos Park, Plain- scutellum with narrow, median, view, Putnam, Urbana, Warsaw, Wauke- yellowish line, this line sometimes gan, Zion. obscured by brownish coloration..

...... evonymi, p. 178 Paracalocoris Distant Second antennal segment rather uniformly yellowish brown, in darkest KEY TO SPECIES specimens with black but only at apex; scutellum with light color 1. Hind tibiae thickly clothed with long, irregularly distributed; brown erect hairs which obscure tibial largely broken by minute, light- spines and are easily confused with colored spots ...... salicis, p. 177 177 them ..... scrupeus, p. 9. Dorsum dark brown, with several Hind tibiae with shorter and more large yellow patches: on apical half appressed hairs, especially on inner of scutellum, apex of clavus, middle side; hairs not easily confused with of corium, apex of embolium and true spines ..... 2 outer half of corium, and three 2. Length of first antennal segment as areas on pronotum...... than maximum great as or greater ...... multisignatus,p. 180 dorsal length of pronotum ...... 3 Ground color dark brown, light- First antennal segment shorter than colored areas taking the form of pronotum ...... 6 fine lines and small dots...... 10 3. Length of first antennal segment less 10. Basal half of second antennal segment than width ofhead plus dorsal width yellowish brown, but without nar- of an eye; length 6.00-6.50...... row white annulus at middle or ...... hawleyi, p. 178 base.castus, p. 178 Length of first antennal segment equal Second antennal segment with a nar- to width of head plus dorsal width row white annulus near the middle of an eye, or greater...... 4 which separates black area on apical 4. Second antennal segment uniformly half from brownish basal half ... 11 black...... limbus, p. 178 11. Rostrum extending beyond hind coxae Second antennal segment pale yellow- .celtidis, p. 179 ish to brown, sometimes dark Rostrum not extending beyond hind brown, but never black; general coxae . 12 coloration brownish, with minute 12. Second antennal segment dark, with pale spots ...... 5 pale annulus at middle only; femora 5. First antennal segment reddish brown, dark at base, apical half with one with pallid spots; gula and genae large and several smaller white dark brown...... spots . gleditsiae, p. 180 . pallidulus var. pallidulus, p. 178 Second antennal segment with pale September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 177

annulus both near base and at mid- notum, length 1.35, width at base 2.06. Dor- dle; femora with broad, light-colored sum clothed with short, yellowish pubes- areas at base and middle...... cence, more golden on clavus, and with a few ...... colon, p. 180 sericeous hairs on scutellum and clavus. Ground color pale yellowish, more or less Paracalocoris scrupeus (Say) clouded with dark brown; pronotal disk brown with several small, pale spots, some Capsus scrupeus Say (1832, p. 23). MALE.-Length 6.00, width 2.50. Head, width 1.10, vertex 0.52. Rostrum, length 2.38, reaching to middle of hind coxae. An- tennae, first segment, length 1.25; second, 1.95; third, 0.82; fourth, 0.91. Pronotum, length 1.34, width at base 2.08. Varying in' color from orange and black, through yellow and brown, to almost uniformly brown or tan. A large number of color combinations of this species have been given varietal names. Of these, besides the typical form, the following varieties, all described by McAtee (1916), have been taken in Illinois: delta, ardens"cunealis, par, sordidus, bidens, nu-- bilus, variueY cormper, lucid's, percursus, rubidis" and triops< HOST PLANTS.-MOSt frequently wild grape (Vitis sp.), but may occur on cultivated varieties of grape and, occasionally, on other woody plants. Illinois specimens were collected on grape, box elder (Acer negundo), willow (Salix sp.), hop tree (Ptelea trifoliata), hickory (Carya sp.), hawthorn (Crataegus sp.), dogbane (Apo- cynum sp.) and dogwood (Cornus sp.). Illinois Records.-One hundred males and 150 females, taken May 30 to July 12, Fig. 170.--Paracalocoris salicis, 9. are from Algonquin, Antioch, Bureau, Dixon, Dolson, Elizabeth, Elizabethtown, of which coalesce behind outer margin of Frankfort, Freeport, Galena, Galesburg, each callus to suggest a ray; pale yellow- Grand Detour, Harvard, Havana, Joliet, ish median line of pronotum continued on Kampsville, Kankakee, Keithsburg, Kings- scutellum, where irregular dark color on ton, Monticello, Oakwood, Oquawka, Ore- either side of it is composed of aggregated gon, Palos Park, Putnam, Riverside, Sa- small dots. Hemelytra medium brown to vanna, Urbana, West Union, White Heath, dark brown, marked with pale dots in longi- Willow Springs, Zion. tudinal series, one row along middle of corium, another along radial vein; apex of Paracalocoris salicis Knight embolium and inner apical angle of corium with broad, pale areas; clavus with a more Paracalocoris salicis Knight (1926j, p. 367). or less broad, pale mark along claval vein. MALE.-Length 6.00, width 2.50. Head Cuneus very light yellow, with inner basal width 1.15, vertex 0.50. Rostrum, length angle, apex, and area extending back along 2.36, nearly attaining hind margins of pos- margin of membrane, brownish. Membrane terior coxae. Antennae, first segment, yellowish to brownish, darker at apex and length 1.18, slightly greater than width of areoles; veins white, brown around smaller head; second, 2.22, rather uniformly yellow- areole. Legs tan to yellowish, darkened with ish brown, somewhat darker at apex; third, brown, this dark color broken by numerous 0.89, black, narrow pale area at base. Pro- pale dots; basal third of tibiae, band at mid- 178 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, dirt. 1 die, and narrow band at apex, dark brown. 2.08, yellowish brown, apical two-fifths and Venter yellowish, sides with three. indistinct, narrow area at base dark brown, without longitudinal, dark lines separated by three any indication of white annuli; third, 0.75, indistinct yellow ones. yellowish, apical half black; fourth, 1.03, FEMALE.-Fig. 170. Length 6.40, width fuscous. Pronotum, length 1.21, width at 2.60. Head width 1.14, vertex 0.50. An- base 1.90. General color dark brown, with tennae, first segment, length 1.24; second, a few yellow spots on pronotum, apical area 2.22; third, 1.00; fourth, 0.98. Very similar of corium and on cuneus; scutellum with a to male in pubescence and coloration. slender, median yellowish line. Membrane HOST PLANT. - Sandbar willow (Salix fuscous, with a yellowish spot near tip of longifolia). cuneus; veins fuscous, pale at apex of larger KNOWN DISTRIBUTION.-Colorado, Illi- areole. Dorsum clothed with yellowish to nois, Indiana, Iowa, Michigan, Minnesota, golden, sericeous pubescence intermixed with Nebraska, Pennsylvania, South Dakota. a lesser amount of simple pubescence. Legs Illinois Records. - Twenty-two males dark brown; femora with rows of small and 31 females, taken May 27 to July 26, yellowish spots, hind femora each with a are from Alton, Bureau, Elizabethtown, large yellowish spot dorsally near middle Freeport, Golconda, Herod, Kampsville, of apical half; each tibia with a broad, yel- Lilly, Monticello, Oquawka, Oregon, Palos lowish band at middle and just before apex; Park, Pulaski, Rockford, St. Joseph, Sa- tarsi brown to fuscous. vanna, Seymour, West Union, Willow FEMALE.-Length 5.40, width 2.60. Head Springs, York. width 1.11, vertex 0.51. Antennae, first segment, length 1.03; second, 1.99; third, Paracalocoris hawleyi Knight 0.91; fourth, 1.12. Pronotum, length 1.38. width at base 2.12. More robust than male, Paracalocoris hawleyi Knight (1916b, p. 377). but very similar in pubescence and colora- Not taken in Illinois; known from Mas- tion. sachusetts, New York, Ohio. Occurs on HOST PLANT.-Virginia creeper (Psedera cultivated hop (Hamulus japonicus). quinquefolia). KNOWN DISTRIBUTION.-District of Co- Paracalocoris limbus McAtee lumbia, Florida, Illinois, Iowa, Maryland, Massachusetts, Michigan, Minnesota, New Paracalocoris limbus McAtee (1916, p. 380). Jersey, New York, Ohio, Vermont. Not taken in Illinois; known from Geor- Illinois Records.-ALGONQUIN: June 24, gia, Maryland, Massachusetts, New York, 1894, 1 9. ANTIOCH: July 5-7, 1932, T. H. Ohio, Pennsylvania, Virginia. Frison, 1 , 1 9 . HAVANA: July 12, 1932, Dozier & Park, 1 9. WHITE PINES FOREST Paracalocoris pallidulus McAtee STATE PARK: July 4, 1932, Dozier & Mohr, 1 Paracalocoris hawleyi var. pallidulus McAtee d. P (1916, p. 380). Paracalocoris trivittis Knight Not taken in Illinois; known from Minne- sota, New York, North Dakota, Ohio, On- Paracalocoris trivittatus Knight (1926j, p. 371). Preoccupied. tario; feeds on apple (Pyrus mals) and Paracalocoris trivittis Knight (1930d, p. hawthorn (Crataegus sp.). The variety al- 812). bigulus Knight (1930d, p. 823) is generally Known only from Mississippi. lighter in color than the typical form. Paracalocoris evonymi Knight Paracalocoris castus McAtee Paracalocoris evonymi Knight (1930d, p. Paracalocoris colon var. castus McAtee (1916, 812). p. 382). MALE.-Length 6.10, width 2.70. Head MALE.-Length 5.40, width 2.30. Head width 1.13, vertex 0.54. Rostrum, length width 1.04, vertex 0.45. Rostrum, length 2.25, reaching to middle of hind coxae, yel- 1.95, just reaching to middle of hind coxae. low with apex black. Antennae, first seg- Antennae, first segment, length 0.88, dark ment, length 1.25, pale, with reticulated brown with a few yellowish spots; second, brown marks and spots; second, 2.25, nar- September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 179 row area at base black, bordered by a pale Illinois Records. - ELIZABETHTOWN: annulus, then yellowish brown to middle, May 27-31, 1932, on redbud, H. L. Dozier, where a slightly paler annulus separates this 3 a. OQUAWKA: June 13, 1932, on Acer from the black on apical half; third, 0.97, negundo, H. L. Dozier, I Q. pale, distal half black; fourth, 1.12, blackish, paler at base. Pronotum, length 1.38, Paracalocoris celtidis width at base 2.12; dark brown; disk with a Knight tew pale spots; median line pale although it Paracalocoris celtidis Knight (1930d, p. 810). may be indistinct near basal margin, basal edge yellowish; discal spots black, inner and MALE.-Length 5.70, width 2.60. Head outer margins bordered by yellow. Scutel- width 1.14, vertex 0.56. Rostrum, length lum dark brown, median line with a slender 2.70, extending to fifth abdominal segment, pale mark; small spot near each basal angle, tan to yellowish with last two segments and a few even smaller dots near middle black. Antennae, first segment, length 1.00, and apex, yellow. Hemelytra dark brown dark brown to black, with several small, to black; area at inner half of clavus bor- white, glabrous spots and set with several dering scutellum black; corium with a few erect, black setae; second, 2.25, black, with vague, yellowish spots; radial vein yellow pale annulus at middle; third, 0.91, fuscous on basal half. Cuneus mostly dark brown, to black, yellowish at base; fourth, 0.95, with outer edge and area extending across black, with a narrow yellowish area at base. middle yellowish; light-colored area on disk Pronotum, length 1.30, width at base 2.00; appearing more as spots than as uniform disk dark brown to black, with pale spots; color. Membrane dark fuscous to black; a calli and areas surrounding discal spots yel- rather large, yellowish spot on margin near low to yellowish brown; area between calli apex of cuneus and a smaller one on middle white, this color extending back along me- of larger areole; vein at apex of larger dian line to base as a white line, basal half areole yellowish. Legs tan, with bases of of line apparently produced by the joining coxae more or less fuscous and apical halves of several spots. Scutellum brown, with of femora spotted with brown, this colora- yellowish, more or less confluent spots; tion on apical third of hind femora inter- median line yellowish, except at apex, but rupted by a few minute, yellow spots; tibiae this line joined by so. many spots that each with two brown bands, apices only its outline is largely obscured. Hem- slightly darkened; tarsi pale, apices black. elytra black and brown, with minute yel- Venter of thorax dark brown, darker at lowish spots, these more prominent along sides; ventral surface of abdomen yellowish radial vein and near apex of embolium. on basal half, sides rather uniformly very Cuneus largely white due to the numerous dark brown, except on second, or first visible, and confluent white spots; apex and para- segment, where two more or less indistinct cuneus black. Membrane dark fuscous or pale marks occur. Dorsum clothed with yel- black, with disk of larger areole, apical half lowish to golden, recumbent, sericeous pu- of membrane except large spot bordering bescence intermixed with a few obscure, apex of larger areole, and spot at middle of simple hairs. outer margin, yellowish. Legs yellow, FEMALE.-Length 5.80, width 2.80. Head marked with brown; distal half of femora width 1.16, vertex 0.56. Antennae, first seg- with black ground color, which is cut into ment, length 1.21; second, 2.20; third, 1.00; small areas by numerous white spots; hind fourth, 1.12. Pronotum, length 1.35, width femora with one much larger white spot at base 2.16. Slightly more robust than on middle of dorsal aspect; tibiae with apex, male, but very similar in pubescence and band at middle, and a broader band at base, coloration. brown, the last somewhat broken by white HOST PLANT.-Waahoo or burning bush spots; tarsi pale, apices black. Venter dark (Evonymus atropurpureus); a single speci- brown, varied with white and yellowish men was taken in this state on box elder marks; sides tending toward black, with (Acer negundo); others were taken on red- three rows of obliquely placed, yellow bud (Cercis canadensis). dashes. Dorsum clothed with recumbent, KNOWN DISTRIBUTION.-Illinois, Iowa, pale to golden yellow, sericeous pubescence, Ohio, western New York. intermixed with less prominent, simple, fus- 180 ILLINOIS NATURAL HISTORY SURVEY-BULLETIN Vol. 22, Art. I cous hairs; femora with several prominent, lines. Legs reddish brown, irregularly bristlelike white hairs, much as in gledit- marked with white dots; femora much siae Knight; tibiae with several yellowish, darker at bases; hind pair with a large setose hairs which may be longer than true white spot on dorsal aspect beginning at spines, but these spines much thicker and middle; tibiae with white band at middle. brown in color. FEMALE.-Length 5.80, width 2.70. Head FEMALE.-Length 6.00, width 2.60. Head width 1.12, vertex. 0.54. Antennae, first seg- width 1.14, vertex 0.56. Antennae, first ment, length 0.99; second, 1.92; third, 0.75; segment, length 1.04; second, 2.03; third, fourth, 0.78. Pronotum, length 1.30, width 0.95; fourth, 1.29. Pronotum, length 1.34, at base 2.04. Very similar to male in pu- width at base 2.12. Slightly more robust bescence and coloration. than male, but very similar in pubescence HOST PLANT.-Honey locust (Gleditsia and coloration. tria-anthos); also collected on black locust HOST PLANT.-Hackberry trees (Celtis (Robinia pseudoacacia). occidentalis). KNOWN DISTRIBUTION. - Illinois, Indi- KNOWN DISTRIBUTION. -Illinois and ana, Iowa, Ohio. Iowa. Illinois Records.-DANVILLE: June 8, Illinois Records.-ILLINOIS: 1 9. UR- 1902, Titus & Kahl, 1 d . ELIZABETHTOWN: nANA: July 16, 1932, C. 0. Mohr, 1 9. May 27-31, 1932, on Robinia pseudoacacia, H. L. Dozier, 1 &, 4 9. NEW HOLLAND: Paracalocoris gleditsiae Knight May 28, 1936, Mohr & Burks, 3 8, 4 9. ST. JOSEPH: June 17, 1932, T. H. Frison, 1 S . Paracalocoris gleditsiae Knight (1926j, p. 370). Paracalocoris multisignatus Reuter This is allied to colon (Say) by key characters and it is distinguished from Paracalocoris multisignatus Reuter (1909, colon by having several prominent, erect, p. 40). bristlelike hairs on the hind femora; the Known from District of Columbia, length of each of these hairs is greater than Georgia, Indiana, Maryland, Mississippi, the thickness of a tibia. New York, North Carolina, Ohio, Okla- MALE.-Length 5.40, width 2.20. Head homa, Texas, Virginia. It should eventually width 1.05, vertex 0.47. Rostrum, length be found in southern Illinois. Breeds on 2.04, reaching to middle of hind coxae. An- wild grape (Vitis rotundifolia). tennae, first segment, length 0.89, dark reddish brown with a few small white dots; sec- Paracalocoris colon (Say) ond, 1.90, dark brown, with a pale an- Capsus colon Say (1832, p. 25). nulus at the middle and a somewhat lighter ADULTS.-Length 5.80, width 2.50; length brown area before annulus; third, 0.81, dark of pronotum 1.33. Antennae, first segment, brown to fuscous, paler at base; fourth, length 1.10, brownish, spotted with yellow, 0.83, fuscous, a narrow yellowish area at spots more or less confluent, clothed with base. Pronotum, length 1.20, width at base black semierect hairs which are hardly as 1.86; dark brown, basal half of disk black, long as segment is thick; second, 2.22, nar- slender area at base yellowish, and with row area at base and apical one-third black, seven or eight pale spots on sub-basal mar- area between brownish, but with pale an- gin, area bordering outer margin of black nulus bordering black, pubescence fine; third, discal spots, and four short, longitudinal 0.97, pale to fuscous, becoming darker at marks between, yellow to white. Scutellum apex; fourth, 1.08, pale fuscous, darker at dark brown, with slender line and irregu- apex. Dorsum pale yellowish to grayish or lar marks on either side near apex pale. dark brown, spotted with yellow, in paler Hemelytra dark brown, somewhat paler at specimens brown forming large spots; base of corium and apex of clavus; embo- clothed with pale yellowish to golden pu- lium, corium and cuneus with several small, bescence; membrane fuscous, with a spot yellowish or white dots. Membrane infus- at middle and on either side near tip of cu- cated, veins about apex of larger areole neus yellowish. Ventral surface brownish, white. Venter with sides dark brown, each each segment with two or three longitudinal, segment with three yellow marks which, yellow marks on sides. Legs yellowish; api- taken together, suggest broken, -longitudinal cal third of femora and two bands on tibiae September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 181 brownish, this color spotted with yellow; in slightly flattened, black hairs; third, 0.99, dark specimens, hind femora developing a slender, black, yellowish at base; fourth, brownish patch on basal half. 1.00, black. Pronotum, length 0.78, width FOOD PLANT.-Collected on gooseberry at base 1.22. General color black; collar, (Ribes sp.) in Illinois. broad area on median line of scutellum, KNOWN DISTRIBUTION.-District of Co- inner margin of clavus, embolium, and lumbia, Illinois, Indiana, Michigan, New outer margin of cuneus, yellowish to white; Jersey, New York. legs and venter, except genital segment, Illinois Records.-Eleven males and 8 orange colored. females, taken May 29 to July 14, are from FEMALE.-Length 5.40, width 1.81. Head Anna, Forest City, Hardin, Havana, Keiths- width 0.91, vertex 0.36. Antennae, first seg- burg, Manito, Palos Park, Quincy, White ment, length 0.86, yellow to orange; second, Heath, White Pines Forest State Park. 1.77, fusiform, greatest thickness 0.17; third, 1.00; fourth, 1.08. Pronotum, length 0.86, Garganus Stil width at base 1.35. More robust than male, but very similar in pubescence and colora- Garganus fusiformis (Say) tion. Capsusfusiformis Say (1832, p. 24). HOST PLANTS. - Coltsfoot (Tussilago MALE.-Fig. 171. Length 5.10, width farfara); Illinois specimens were taken also 1.60. Head width 0.86, vertex 0.30. Rostrum, on smartweed (Polygonunm sp.). length 1.86, slightly exceeding posterior mar- KNOWN DISTRIBUTION.-Alabama, Con- gins of hind coxae. Antennae, first segment, necticut, District of Columbia, Florida, length 0.95, orange colored and with short, Georgia, Illinois, Indiana, Kansas, Mary- fuscous pubescence; second, 1.86, fusiform,' land, Massachusetts, Missouri, North Caro- thickness 0.13, black, thickly clothed with lina, New Jersey, New York, Ohio, Ontario, Pennsylvania, South Carolina, Tennessee, Virginia. Illinois Records.-Sixty-six males, 46 females and 1 nymph, taken June 14 to Oct. 6, are from Algonquin, Alto Pass, Browns, Cairo, Carbondale, Carmi, De Soto, Dixon Springs, Dolson, East St. Louis, Elizabeth, Elizabethtown, Galesburg, Grand Tower, Grandview, Herod, Karnak, Metropolis, Milo, Mount Carmel, Normal, Pulaski, Temple Hill, Urbana, West Pullman. Neurocolpus Reuter KEY TO SPECIES 1. Length of first antennal segment three- fifths or more length of second segment...... 2 Length of first antennal segment not, or only slightly, exceeding one-half length of second segment ...... 3 2. Length of first antennal segment nearly three-fourths length of second segment; tip of rostrum surpassing posterior margins of hind coxae......

...... t~~~~~~lflae,...... tia,.18 p. 182 Length of first antennal segment not more than two-thirds length of second segment; tip of rostrum reaching posterior margins of hind Fig. 171. Garganus fusiformis, 6'. coxae . nubilus, p. 182 182 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. 1

3. Hind femora pale with apical one- Monticello, Mound City, Mount Carmel, fourth black ...... jessiae, p. 183 Muncie, Oakwood, Oregon, Palos Park, Hind femora fuscous or reddish on Parker, Quincy, Savanna, Seymour, Shaw-

basal half...... rubidus, p. 183 neetown, Urbana, Volo, Wauconda, West Union, Winchester, York. Neurocolpus nubilus (Say) Capsus nubilus Say (1832, p. 22). Neurocolpus tiliae Knight MALE.-Length 6.50, width 2.50. Head Neurocolpus tiliae Knight (1934, p. 162). width 1.12, vertex 0.52. Rostrum, length MALE.-Fig. 172. Length 5.70, width 2.70, just attaining posterior margins of 2.30. Head width 1.00, vertex 0.48. Ros- hind coxae. Antennae, first segment, length trum, length 2.55, exceeding posterior mar- 1.34, moderately compressed, width 0.28, gins of hind coxae, extending to fourth ven- pale, with irregular brown marks, clothed tral segment. Antennae, first segment, with prominent, flattened black hairs inter- length 1.43, slightly compressed, greatest mixed with erect, white bristles; second, width 0.24 near middle, clothed with erect, 2.42, yellowish brown, reddish brown to flattened, black hairs, intermixed with erect, black on slightly thickened apical one-third; slightly longer, simple, yellowish hairs, third, 0.88, black, pale at base; fourth, 0.86, orange yellow, irregularly marked with red- blackish. Pronotum, length 1.43, width at dish or fuscous dots; second, 2.03, slender, base 2.12; pale greenish yellow; disk with becoming clavate on apical third (width irregular brownish marks; basal half clothed 0.15), pale, thickened part dark red to black- with erect, slightly flattened black hairs, in- ish; third, 0.78, yellowish, apical third black termixed with pale, simple and a few more with a reddish cast; fourth, 0.74, fuscous. recumbent, sericeous hairs. Scutellum yel- Pronotum, length 1.25, width at base 1.82, lowish, irregularly marked with brown. basal margin distinctly sinuate at middle. Hemelytra brownish to fuscous, the darker Dorsal aspect yellowish to orange red, hem- color broken by minute yellowish dots and elytra with a considerable number of yel- irregular spots; cuneus darker at base and lowish spots which are larger and, in part, apex; membrane fuscous with a pale marginal spot behind cuneus; veins brown, yellowish apically. Legs tan; femora showing brownish markings; hind pair with brownish band at middle of apical half; space before band and at apex, yellowish or white; irregular brownish markings usually breaking paler color; tibiae with band at middle and at apex dark brown or fuscous and with another irregular one of same color near base. FEMALE.-Length 7.00, width 2.60. More robust than male, but very similar in pubescence and coloration. HOST PLANT.-Buttonbush (Cephalan- thus occidentalis); Illinois specimens also were collected on cottonwood (Populus del- r.N toides), Kentucky coffee tree (Gymnoclad- us dioica) and willow (Salix sp.). KNOWN DISTRIBUTION.-Common in all the eastern states and southeastern Canada. Illinois Records.-One hundred twenty- six males and 119 females, taken May 24 to Sept. 2, are from Algonquin, Alton, Antioch, Ashley, Browns, Champaign, Chicago, De- catur, Dolson, Dubois, Duncan Mills, East St. Louis, Elizabethtown, Frankfort, Ga- lena, Grand Tower, Havana, Herod, r' Horseshoe Lake, Karnak, Keithsburg, Lilly, Fig. 172.- Neurocolpus ti/iae, cI. September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 183 confluent on cuneus; scutellum paler, irre- black; front and middle femora with irregularly marked with dark granulate reticu- gular fuscous areas at apices; tibiae pallid; lations; pronotum yellowish, usually dark- front and middle pairs with bases, apices, ened by hypodermal reddish granulations; and two narrow rings between, fuscous; propleura pale; coxal cleft crossed by two hind tibiae.with basal one-fourth and broad irregular dark rays. Membrane fuscous, a band just below middle, black; apices fus- rounded spot on either side touching margin; cous; tarsi yellowish, apical segment largely discal spot, and areas bordering cuneus black. within areoles, less dark. Hemelytra clothed FEMALE.-Length 6.50, width 2.30. Very with golden, slightly sericeous, recumbent similar to male in form and coloration. pubescence, intermixed with some simple, HABITS.-Nymphs and adults were col- pale to fuscous hairs; pronotum with much lected "from panicles of elder fruit" at Ur- longer hairs. Body beneath tan to yellow- bana, by C. A. Hart. ish; sides of thorax and abdomen darkened KNOWN DISTRIBUTION.-Illinois, Iowa, with reddish and fuscous; two paler longi- Massachusetts, Missouri, Mississippi, New tudinal lines running through dark color. York, Ontario, Texas. Legs tan to yellowish; hind femora darkened Illinois Records.-NORTHERN ILLINOIS: on apical half with reddish and fuscous and 1 S. GALESBURG: 1 d ; July 27, 1892, 1 as, provided with a few flattened, black hairs; I 9 ; July 24, 1892, 1 9. URBANA: July 20, tibiae pale to reddish., not distinctly banded. 1889, from panicles of elder fruit,, C. A. FEMALE.-Length.5.60, width 2.30. Very Hart, 11 , , 16 9 ; July 21, 1889, in forest, similar to male in form and coloration.. C. A. Hart, 19; July 24, 1889, on elder HOST PLANT.-Basswood (Tilia ameri- (Sambucus sp.), C. A. Hart, 2 43, 9 9. cana). KNOWN DISTRIBUTION.- Illinois, Iowa, Neurocolpus rubidus Knight Minnesota, New York, Ontario. Illinois Records.-NORTHERN ILLINOIS: Neuroco/pus rubidus Knight (1934, p. 164). 3 9. ALGONQUIN: July 17, 1896, 1 9. MALE.-Length 6.00, width 2.10. Head FRANKFORT: June 8, 1933, Mohr & Town- width 1.00, vertex 0.41. Rostrum, length send, 1 9 . GALESBURG: July 24, 1892, 4 9 . 2.30, just attaining posterior margins of hind URBANA: July 4, 1915, on tree trunk, 1 Q. coxae. Antennae, first segment, length 1.04, compressed, greatest width 0.22 near middle, reddish, irregularly and closely marked with Neurocolpus jessiae Knight yellowish, usually flattened, black hairs Neurocolpusjessiae Knight (1934, p. 163). abundant, intermixed with somewhat longer, MALE.-Length 6.30, width 2.34. Head pale to fuscous,, bristlelike hairs; second, width 1.08, vertex 0.43. Rostrum, length 2.16, slender, gradually thickened (width 2.50, extending nearly to hind margins of 0.12) on apical half, yellowish, apical half posterior coxae. Antennae, first segment, reddish; third, 0.82, fuscous, pale at base; length 1.25, slightly compressed, greatest fourth, 0.83, black. Prondtum, length 1.12, width (0.22) near middle, the black scale- width at base 1.73. General coloration red- like hairs only moderately conspicuous, these dish., in dark specimens fuscous appearing on hairs intermixed with a few more nearly hemelytra. Embolium and scutellum with erect, black bristles, this segment very dark several yellowish spots; membrane dark brown, closely and irregularly spotted with fuscous, a pale spot on either side at mar- yellowish; second, 2.64, slender, distal half gin; veins dark; apical curve of cubitus red- gradually tapering to become thicker api- dish. Dorsum clothed with golden, seri- cally, part black, basal half yellowish; third, ceous pubescence intermixed with simple 1.08, black, yellowish at base; fourth, 1.11, yellowish to fuscous hairs; distinct black black. Pronotum, length 1.34, width at base hairs on pronotum. Femora reddish; hind 1.95. Dorsum chiefly black, with basal half pair with a distinct yellowish spot above, of cuneus, spots on embolium and scutellum, slightly beyond middle; tibiae yellowish, two and more or less broad area on anterior narrow reddish rings on front and middle half of pronotum, tan to yellowish; body be- pair; reddish areas on middle and basal one- neath pallid to yellowish, sides of 'thorax fourth of hind pair. and venter more or less infuscated. Legs FEMALE.-Length 6.20, width 2.34. Very pallid; apical one-fourth of hind femora similar to male in form and coloration. 184 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Jrt. 1

KNOWN DISTRIBUTION.-Connecticut, 4. Antennae more black or fuscous than Illinois, Kansas, New York, Ohio. pallid; if second segment has a broad, Illinois Record.-NORTHERN ILLINOIS: pale area at middle, then dorsum 2&, 29. chiefly dark brown to black; general coloration dark brown or black on a Phytocoris Fallen less dark background...... Group II, p. 191 KEY TO GROUPS Antennae more nearly pale, yellowish or reddish rather than dark brown 1. Wing membrane confusedly sprinkled or black; second segment sometimes with discolored or dark spots, or with partly brown, but with larger pallid numerous, minute, pale spots; me- than brown areas; general coloration dian lobe of male genital structure usually yellowish to reddish on a provided with a flagellum that lacks paler background... Group IV, p. 201 distinct teeth, fig. 175 Group I, p. 184 Group I KEY TO SPECIES 1. First antennal segment greatly thickened; thickne3s nearly equal to dorsal width of an eye, fig. 173 ...... 2 First antennal segment more slender; thickness distinctly less than dorsal width of an eye, fig. 174 ...... 3 2. Basal three-fou ths of second antennal segment yellowish, apical one-fourth black or very dark brown...... asiomerus, p. 185 173 174 Second antennal segment uniformly yellowish, or very slightly dusky Fig. 173.-Head and first antennal segment only at apex ... pallidicornis, p. 185 of Phytocoris lasiomerus. 3. Second antennal segment dusky yel- Fig. 174.-Head and first antennal segment low to pale brown, white at base; of Phytocoris conspurcatus. clavus pallid; corium with an oblique, dark brown band on basal Wing membrane marbled, uniformly half that joins a brown area ex- dark brown or uniformly light col- tending along claval suture; length ored, never with many minute spots 3.80-4.00.....breviusculus, p. 190 (except perhaps in some forms of Second antennal segment chiefly quercicola); margins of dark areas of black, usually with white bands... 4 membrane sometimes separating 4. Second antennal segment black at into small specks, but general effect base, with a light-colored band more mottled than spotted; median more distad; length of first antennal lobe of male genital structure with a segment greater than width of pro- flagellum bearing distinct teeth, figs. notum at base; four small, black, 2 176, 178 ...... conical projections, two on either 2. Length of first antennal segment less side of median line, present near

than . 3 width of head ...... posterior margin of pronotum..... segment great- Length of first antennal ...... antennalis, p. 185 er than 4 width of head ...... Second antennal segment with a light- 3. First segment of antennae red with colored band at base, black beyond 5 yellow spots ...... Group IV, p. 201 5. Third antennal segment with pale First segment of antennae not red band at base and at middle ...... 6 with yellow spots, but yellow, yellow Third antennal segment with pale with dark spots or brown to almost band at base only, or annuli en- black ...... Group III, p. 199 tirely wanting ...... 7 September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 185

6. Dorsum bearing both black and white equal to or greater than width of scalelike hairs, which are turned on pronotum at base. aibifacies p. 186 edge; ventral half of propleura pal- Length of first antennal segment not lid, but no distinct white line present equal to width ofpronotum at base 13 above middle of coxal cleft...... 13. Femora black; hind pair with an ob-

. . conspurcatu8, p. 188 lique, subapical white band, usually Dorsum without distinct scalelike a few small pallid dots nearby; hairs; propleura white with dorsal length 6.50. . tuberculatus, p. 187 margin black and a clear-cut, black Femora more pallid than black, apical line extending across ventral half half darkened with fuscous and of coxal cleft to basal margin...... broken by numerous large and small ...... davisi, p. 187 pallid spots; length 6.00......

7. Second antennal segment with a ...... suicatus p. 190 broad, pale yellowish to dusky area *at middle, dark fuscous only at apex and next to pale band at base; Phytocoris lasiomerus Reuter small, slender species, length 5.10. . Phytocoris lasiomerus Reuter (1909, p. 34)...... minutulus, p. 188 Known from Colorado, Iowa, Maine, Second antennal segment black with Massachusetts, Minnesota, Montana, New a pale band at base, but, at most, York, Ontario, Quebec, Washington, Wis- only a narrow, pallid band at mid- consin, Wyoming. Not as yet recorded from dle...... 8 Illinois, but should be found in the northern 8. Corium with a longitudinal black part. vitta on middle of apical half, set on a grayish background, radius in- Phytocoris pallidicornis Reuter dicated by an interrupted series of black dots; length of first antennaJ Phytocoris pallidicornis Reuter (1876, p. 69). segment equal to distance between Known from British Columbia, Colorado, tyrus and basal margin ofpronotum; Maine, Massachusetts, Michigan, Minne- second antennal segment with a sota, Montana, New Hampshire, New light-colored area at base which is York, North Dakota, Wisconsin. Not yet interrupted on ventral side by a taken in'Illinois, but should be found in the black line...... vittatus, p. 190 northern part. Corium without a distinct longitudinal black vitta on a grayish back- Phytocoris antennalis Reuter ground...... 9 Phytocoris antennalis Reuter (1909, p. 32). 9. Hind femora very dark brown, apical MALE.-Length 5.10, width 1.60. Head half with small, pale dots only.... width -0.90, vertex 0.42; testaceous to very ...... fumatus, p. 188 dark brown; tylus white with middle third Hind femora black, with a large light- black. Antennae, first segment, length 1.28, colored band or numerous large, very dark brown, inner surface marked with pale spots ...... 10 four or five pale spots; second, 2.56, black, 10. Lower half of head black, or pallid and with a narrow, light-colored annulus slight- marked with black ...... 11 ly distad of base and a second, broader light Lower half of head white; tylus band slightly beyond middle; third, 1.66, blackish only at base...... 12 fusco-brownish, pale at base; fourth, 1.44, 11. Second antennal segment with light- fuscous. Pronotum, length 0.79, width at colored band at middle; mesopleura base 1.43, testaceous to brownish and be- uniformly black...... coming black on area bordering sinuate pale .. corticevivens, p. 186 area at posterior margin; two small, coni- Second antennal segment without cal projections on either side of middle near light-colored band at middle; mes- posterior margin; propleura black, a pale opleura with pallid ray appearing ray extending across top of coxal cleft. Scu- as an extension of that on propleura tellum testaceous to fuscous, with a slender, ...... purvus, p. 187 nearly obsolete, pale median line. Hemely- 12. Length of first antennal segment tra testaceous to fuscous and clothed with 186 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. 1 yellowish, black and white pubescence; em- segments black. Antennae, first segment, bolium with an elevated black spot at apex, length 1.80, black, dorsal aspect with two also with a black area at middle which is smooth, white spots on apical half and four broken by pale marks; corium with a darker or five smaller spots on basal half, spines area bordering clavus and a dark spot at both fuscous and light colored, short, length middle on outer margin; cuneus reddish to scarcely equal to thickness of segment; sec- black along outer margin and at apex, with ond, 3.30, mostly black, almost colorless at a black tuft of hairs at middle of inner base for a space of 0.23, and a pale annulus margin and a second one near inner basal of equal length beginning at middle; third, angle. Membrane rather densely marbled 1.77, black, paler at base; fourth, 1.31, with fuscous; more uniformly fuscous api- black. Pronotum, length 1.06, width at cally and at base and with a somewhat base 1.69; black, with lower margin of pro- light-colored area near apex of cuneus, this pleura, xyphus, and collar to a point behind spot invaded by fuscous marks; veins fus- lower margin of eye, white; disk more or cous. Coxae white, with small lateral areas less fuscous, basal margin somewhat pale, at base dusky red. Femora black, less dark with two black, elevated spots on either side at base; hind pair with light spots on ven- of median line. Scutellum fuscous to black; tral aspect and a rather distinct, subapical, basal angles and apex pale. Hemelytra light band on dorsal aspect; front pair black; with several small spots on embolium, mostly pale, with a longitudinal black bar base of cuneus, a triangular spot at apex of on apical half of anterior face. Front tibiae corium and spot near middle, tending to- reddish to black, with a pale annulus at ward pale. Membrane mostly very dark middle of apical half, a narrower one near brown with paler areas sprinkled with fus- middle of basal half and a third, nearly cous dots; cubitus almost entirely colorless. obsolete one, near base; intermediate tibiae Sternum and pleura black, margins border- chiefly light, but marked with dark reddish; ing coxae pale. Venter principally black, hind pair light colored, with variable dark with most of ventral area light except on brown marks; tarsi fuscous. Venter black, last segment. Legs black with almost color- sides irregularly tinged with reddish; geni- less marks much as in corticevivens Knight; tal segment bearing, above base of left femora black, with numerous minute, pale clasper, a broad, erect tubercle' with a spots, a somewhat larger, light-colored spot vague apical notch and another smaller indicating an oblique, subapical annulus. tubercle above base of right clasper; clasp- Dorsum clothed with rather short, black, ers distinctive for species. simple pubescence intermixed with silvery FEMALE.-Length 6.20, width 1.90; more and golden, silky pubescence. robust than male, but very similar in color- MALE.-Length 6.00, width 2.00. Very ation. similar to female in coloration, although HABITS.- Usually collected at lights; generally darker. Genital claspers distinc- probably predacious. tive and indicating a close relationship to KNOWN DISTRIBUTION.-District of Co- corticevivens. lumbia, Illinois, Indiana, Massachusetts, HABITS.-Occurs on the bark of pecan Mississippi, New York, Oklahoma, Vir- trees where it is probably predacious. ginia. KNOWN DISTRIBUTION. Illinois and Illinois Record. - CHAMPAIGN: June Mississippi. 13, 1888, C. A. Hart, 1 a. Illinois Record. HARRISBURG: June 15, 1934, at lights, DeLong & Ross, 1 9. Phytocoris albifacies Knight Phytocoris albifacies Knight (1926g, p. 159). Phytocoris corticevivens Knight FEMALE.-Length 5.90, width 2.30. Head Phytocoris corticevivens Knight (1920, p. 63, width 1.11, vertex 0.46. Lower half of face, pl. 1, fig. 6). or ventrad to a line running through base MALE.-Length 6.60, width 2.30. Head of tylus and lower margin of eyes, white; width 1.04, vertex 0.39. Rostrum, length vertex more or less colorless, a curved, white 3.03, reaching fifth abdominal sternite. An- mark touching inner margin of each eye. tennae, first segment, length 1.60, black, Rostrum, length 3.43, attaining base of basal half with five or six small, smooth, ovipositor, white, with third and fourth white spots, each bearing a few erect, short September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 187 bristles; second, 3.00, very dark brown, pale yellowish, silky hairs. General color with a pallid band at base and another, nar- fuscous to black; pronotum and scutellum rowr one at middle; third, 1.69, black, pallid with paler areas; embolium with small pal- only at base; fourth, 1.30, black. Pronotum, lid spots. Membrane fuscous, paler areas length 1.16, width at base 1.90. Iorsum stippled with small fuscous dots. Legs black, clothed with rather short, recumbent, black coxae light colored, hind femora with an pubescence intermixed with yellowish to oblique white band near apex and a few golden, silky hairs. General coloration small, pallid spots an apical half. Genital black, with small, light-colored spots on claspers, flagellum, long tubercle above base embolium, between calli, on apical area of of left clasper, and shorter one above right corium, and a narrow, pale area at base of clasper, distinctive for species, fig. 175. cuneus. Membrane almost colorless, thick- FEMALE.-Length 6.90, width 2.55. More ly and rather uniformly marbled with fusco- robust than male; very similar in coloration, broWnish. Legs black; hind femora with a but dorsum often lighter in color. few small, light spots; entire coxae light HABITS.-Collected chiefly at lights. colored, except at bases; tibiae with two KNOWN DISTRIBUTION. - Illinois, Indi- pallid bands, those of hind pair becoming ana, Michigan, Missouri, New York, North obsolete, spots and spines of tibiae almost Carolina, Oklahoma, Texas, Wisconsin. white. Genital claspers distinctive, fig. 175, Illinois Records. - GALESBURG: 1 8. a small tubercle present above base of each URBANA: June 20, 1909, 1 d. clasper. FEMALE.-Length 6.80, width 2.50. More robust than male, but very similar in color Phytocoris davisi Knight and pubescence. Phytocoris davisi Knight (1923d, p. 624). HABITs.-Predacious. In Minnesota, I Not taken in Illinois; known only from collected a series of nymphs and adults on New Jersey and New York. the bark of sugar maple (Acer saceharum); both nymphs and adults were well concealed as they crouched in crevices of the bark, ap- Phytocoris purvus Knight parently awaiting their prey. KNOWN DISTRIBUTION.-Connecticut, Phytocoris purvus Knight (19271b, p. 17). Illinois, Iowa, Maryland, Minnesota, Mis- This species is allied to minutulus Reu- souri, New Jersey, New York, Ohio, On- ter, but differs from it in the shorter first tario, Texas, Wisconsin. antennal segment, the black second anten- Illinois Records.-NORTHERN ILLINOIS: nal segment with a narrow, pale annulus at 7 9 ; July, 1 9 . ALGONQUIN: 1 & ; June 5, base only, in the larger eyes and narrow 1895, 1 a. Fox LAKE: June 10, 1936, Ross vertex, the distinctive subapical marks on & Burks, 2 9. GALESBURG: June 21, 1892, the scutellum, and the structure of the male 1 . URBANA: May 31, 1889, C. A. Hart, genital claspers.

19. MALE.-Length 5.50, width 1.90. Head width 1.05, vertex 0.22; eyes large and Phytocoris prominent, vertex chiefly almost colorless, tuberculatus Knight frons with six transverse dark lines, ventral Phytocoris tuberculatus Knight (1920, p. 64.) area of frons and tylus black, a V-shaped MALE.-Length 6.50, width 2.10. Head white mark on basal half of tylus, juga white width 1.10, vertex 0.39; lower half of head with a transverse black mark on dorsal half, white; very dark brown across base of tylus; lora black with -a light-colored area on lower frons with oblique dark lines. Rostrum, margin which joins the similarly colored length 3.42, extending to sixth abdominal areas on the much reduced genae and gula. sternite. Antennae, first segment, length Rostrum, length 2.60, extending to fifth ab- 1.51, black, dorsal aspect with several dominal sternite, pale yellowish with apex smooth, white spots; second, 3.12., black, very dark brown. Antennae, first segment, pallid at base, a yellowish annulus at middle, length 1.11, only slightly greater than width this band sometimes nearly obsolete; third, of head, black, with ventral side light, black 1.86, black, pallid at base. Pronotum, length area broken by several white spots, a white 1.16, width at base 1.95. Dorsum clothed seta arising from each spot; second, 2.80, vith short, black pubescence intermixed with black., narrow pale area at base; third, 1.45, 188 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. I black, narrow pale area at base; fourth, segment brownish. Antennae, first segment, 1.09, black. Pronotum, length 0.83, width length 1.57, equal to distance between pos- at base 1.51; fuscous to black, paler on calli terior margin of pronotum and a line drawn and central area of disk, lowe'r margin of through eyes at a point slightly before propleura almost white. Scutellum pale, middle, black, with pale spots on dorsal side, with a pair of well defined dark brown, two largest spots on apical half; second, 3.10, subapical, marginal spots. Sternum pale, dark brown with pallid areas on dorsal side sides and pleura black. Dorsum rather uni- *at base and middle, areas at middle vague; formly dark fuscous, with light-colored third, 1.79, black with almost white area spots on embolium and a somewhat paler 0.17 wide at base; fourth, 1.30, black. Hem- area at middle of corium. Clothed with fus- elytra fuscous to black; a large yellowish cous, simple pubescence, intermixed with and translucent spot at apex of corium near white, silky hairs in numerous spots. Mem- base of cuneus; embolium irregularly trans- brane almost colorless, speckled with numer- lucent and darkened with fuscous; cuneus ous small brownish to fuscous spots, the very slightly lighter at base, a tuft of black preapical area and margins of areoles more hair on inner margin near base and a simi- evenly fuscous; veins fuscous, white areas lar tuft at apex of corium; pubescence black, present around apices of areoles. Legs intermixed with pale, silky pubescence. black, marked with more or less confluent, Membrane pale, thickly and rather uniform- white spots, these spots forming a well- ly marbled with fusco-brownish; veins dark, defined preapical white annulus. Genital pale at apex of larger areole. Legs very claspers distinctive; left clasper with inner dark brown, entire coxae light colored except arm much flattened, right clasper shaped spot near base; trochanters pallid; femora much as in quercicola Knight. with numerous, small, pallid spots, a slightly FEMALE.-Length 5.30, width 2.00. Very larger, nearly colorless spot on anterior as- similar to male in pubescence and colora- pect near apex, this mark not quite forming tion. a subapical band; front and middle tibiae HABITs.-Collected chiefly about lights; pale at middle and with another, rather dis- a single Illinois specimen was taken on tinct pale band at middle of apical half; cypress (Taxodium distichum). tarsi fuscous. Venter black, with yellowish KNOWN DISTRIBUTION.-District of Co- pubescence; genital segment and claspers dis- lumbia, Illinois, Iowa, Maryland, South tinctive, fig. 175. Carolina. FEMALE.-Length 7.60, width 2.60; larger Illinois Record. - KARNAK: July 28, and more robust than male; very similar to 1930, on Taxodium distichum, Knight & male in coloration, but dorsum lighter col- Ross, 1 2. ored; first antennal segment longer than in male, equal to distance between posterior Phytocoris minutulus Reuter margin of pronotum and a line drawn Phytocoris minutulus Reuter (1909, p. 24). through front margins of eyes. Not taken in Illinois; known from Mary- KNOWN DISTRIBUTION.-District of Co-- New New lumbia, Georgia, Illinois, Massachusetts, land, Massachusetts, Hampshire, New Jersey, New York, North Carolina. York, N orth Carolina, Pennsylvania, Vir- Illinois Record.-CHAMPAIGN: July 7, ginia. 1887, C. A. Hart, 1 8. Phytocoris fumatus Reuter Phytocoris conspurcatus Knight Phytocorisfuamatus Reuter (1909, p. 25). MALE.-Length 7.00, width 2.30. Head Phytocoris conspurcatus Knight (1920, p. 61). width 1.17, vertex 0.40; front with five ob- This species is distinguished by its dark, lique black lines on either side of median marbled membrane and by the pale band at line and a transverse black area between the middle of the first and second antennal bases of antennae; lower half of face white; segments; the dorsum is thickly clothed with base of tylus, base of jugum, and spot on black, deciduous, scalelike hairs intermixed dorsal margin at base of lorum, black; a with small patches of dense, white, woolly rather irregular reddish band extends across hairs. middle of tylus. Rostrum, length 4.20, attain- MALE.-Length 5.90, width 2.10. Head ing base of genital segment, pale with apical width 1.06, vertex 0.34; infuscation similar September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 189 to that of canadensis Van Duzee. Rostrum, dark fuscous to black, more or less pallid length 2.60, attaining base of genital seg- on under side at base; genital claspers and ment. Antennae, first segment, length 1.20, long tubercle above base of left clasper, fig. black, with irregular minute, white spots 175, distinctive for species. beset with from 14 to 16 almost colorless FEMALE.-Very similar to male in size set-ae; second, 2.50, black, with a light- and coloration. colored annulus at base and a second, simi- HABITs.-This is a predacious, bark-in- lar band beginning at middle and extending habiting species, which the author has taken

CD A 8 CORT/CEVIVENS

AUMA T C FL/MA TUS

SULCA TUS Fig. 175.-Male genital claspers of Phytocoris, Group I. a, left clasper, lateral aspect; B, right clasper, lateral aspect; C, flagellum; D, left clasper, caudal aspect. for a space of 0.30; third, 1.48, pallid at on the boles of linden (Tilia americana), base and at middle; fourth, 1.11, black. elm (Ulmus sp.), walnut (Juglans nigra), Pronotum, length 1.54, width at base 1.70; pear (Pyrus communis), apple (Pyrus ma- form and coloration very similar to those in lus), willow (Salix sp.) and maple (Acer eximius Reuter, but differing by having sp.); frequently attracted to light. black, scalelike hairs; scutellum thickly cov- KNOWN DISTRInUTION.-Connecticut, ered with white, woolly pubescence. Hem- District of Columbia, Illinois, Iowa, Kansas, elytra rather uniformly darkened., a tri- Maryland, Michigan, Minnesota, Missis- angular pallid spot at tip of corium border- sippi, Missouri, New Hampshire, New ing cuneus; thickly clothed with black, scale- Jersey, New York, Ontario, Pennsylvania, like hairs intermixed with small patches of South Dakota, Wisconsin. dense, white, woolly hairs. Membrane Illinois Records.-Twenty-three males thickly marbled with dark fuscous; cubital and 23 females, taken May 17 to Septem- vein pallid at apex of larger areole; dark ber, are from Alton, Antioch, Carbondale, spots scattered near apices of cells. Legs Champaign, Darwin, Galesburg, Grafton, marked very much like those of canadensis, Havana, Mahomet, Odin, Palos Park, but pale band near apex of hind femora more Quincy, Shawneetown, Starved Rock State or less interrupted on ventral side. Venter Park, Urbana. 190 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. I

Phytocoris vittatus Reuter Illinois Records.-Five males and 7 females, taken May 22 to Aug. 21, are from Phytocoris vittatus Reuter (1909, p. 28). Argo, Beverly Hills, Champaign, Dubois, Not taken in Illinois; known only from Galesburg, Quincy, St. Anne, Urbana. New York; has been collected on prickly gooseberry (Ribes cynosbati). Phytocoris breviusculus Reuter Phytocoris breviusculus Reuter (1876, p. 68). Phytocoris sulcatus Knight MALE.-Length 3.90, width 1.60. Head Phytocoris sulcatus Knight (1920, p. 64). width 0.84, vertex 0.30; lower face white, In form., this species is very similar to marked with reddish brown. Rostrum, fuumatus Reuter, but the latter is larger; length 1.94, extending to sixth abdominal the pronotum of sulcatus is more distinctly sternite. Antennae, first segment, length sulcate at the sides and immediately behind 0.63, reddish brown, marked with four or the calli; the pallid bands at the base and five white, smooth spots, spines pallid; sec- the middle of the second antennal segment ond, 1.51, dusky yellow, white annulus at are more distinct; the dorsum is distinctly base; third, 1.04, fuscous, pallid at base; paler; and the outer half of the clavus and fourth, 0.78, fuscous. Pronotum, length the inner apical angles of the corium are 0.78, width at base 1.38, disk dusky yellow, very dark brown, almost black. central area more nearly pure yellow, basal MALE.-Length 6.00, width 1.80. Head edge white, this white area bordered by an width 1.08, vertex 0.30. Rostrum, length undulating, fuscous line. Dorsum clothed 2.80, extending to fifth abdominal sternite. with simple fuscous hairs thickly intermixed Antennae, first segment, length 1.25, black, with white and yellowish, silky pubescence. with one large and several small white, Hemelytra pale yellowish; broad fuscous smooth spots; second, 2.64, mostly black, area along claval suture; inner apical angles pallid at base and a yellowish band at and a broad, transverse band on basal half middle; third, 1.47, fuscous, pallid at base; of corium fuscous.. Cuneus yellowish to fourth, 1.21, dark fuscous. Pronotum, white; disk with several small brown dots; length 0.99, width at base 1.60; lateral mar- apex fuscous. Membrane thickly marbled gins of disk and immediately behind calli dis- with fuscous; two small, white spots on out- tinctly sulcate. Dorsum clothed with sil- er margin of apical half. Legs pale yellow- very to yellowish, silky pubescence, inter- ish; hind femora very dark brown, this mixed with more nearly erect, short, black dark color broken by numerous pale dots; hairs. General color fuscous to black, with front and middle femora marked with red- paler spots and areas; membrane pallid, dish brown on apical half. Tibiae with three rather thickly and evenly marbled with fus- fuscous bands; hind pair dark fuscous with cous. Femora with a broad pallid area at numerous white dots. Genital claspers dis- base, apical half black with several pallid tinctive, a prominent tubercle above base spots; hind pair with an irregular, oblique, of left clasper. subapical pallid band. Front and middle FEMALE.-Length 4.10, width 1.64. More tibiae with black and white bands; hind pair robust than male, but very similar in color without distinct white bands. Genital clasp- and pubescence. ers, flagellum and a large, thick tubercle HABITS.-A predacious species which may above base of left clasper, fig. 175, distinc- be collected about lights. Reared in Ohio tive for species. on apple branches which were heavily in- FEMALE.-Length 6.00, width 2.03. More fested with San Jose scale. robust than the male but very similar in KNOWN DISTRIBUTION.-Alabama, Dis- color and pubescence. trict of Columbia, Illinois, Indiana, Missis- HABITs.-Occurs on the bark of linden sippi, Ohio, Texas. Common in Texas, but (Tilia americana), on bur oak (Quercus rare east of the Mississippi River. macrocarpa) and elm (Ulmus sp.); prob- Illinois Records. - ALBION: July 16, ably predacious. 1937, on blackberry, Mohr & Burks, 3 a . KNOWN DISTRIBUTION.-Connecticut, ALTON: July 19-21, 1932, on Crataegus, District of Columbia, Illinois, Iowa, Kan- Ross & Dozier, 3 a, 4 9. FAIRFIELD: June sas, Michigan, Minnesota, Pennsylvania., 12, 1934, DeLong & Ross, 1 9. JONESBORO: South Dakota, Virginia. Aug. 2, 1932, H. L. Dozier, 1 9 . URBANA: September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 191

July 31, 1932, H. L. Dozier, 1 d ; Sept., Tip of right clasper curved upward, 1932, T. H. Frison, 1 S, 2 9. e.g., spicatus ...... 12 11. Base of left clasper convexly rounded

Group II ...... buenoi, p. 197 Base of left clasper sinuate......

KEY TO SPECIES ...... nigricollis, p. 197 12. Basal shoulder of right clasper with a 1. Apex of abdomen with claspers slender fingerlike process project- (males); couplets 2-17 illustrated ing vertically, eg., spicatus ...... 13 in fig. 176 ...... 2 Basal shoulder of right clasper with a Apex of abdomen without claspers (fe- more angulate process, eg., lacunos- males); fully mature, well preserved us ...... 14 specimens necessary for this sec- 13. Basal fingerlike process ofright clasper tion of key...... 18 tapering very little on apical half. 2. Basal shoulder of left clasper with ...... s... picatus, p. 196 thumblike projection, e.g., erectus.. 3 Basal fingerlike process tapering grad- Basal shoulder of left clasper without ually from base to apex...... thumblike projection, e.g., husseyi. 5 ...... cortitectus, p. 196 3. Basal projection of left clasper ex- 14. Thumblike process at middle of right tending vertically as a tall, thick clasper sloping away from tip of process bluntly rounded at apex... clasper ...... lacunosus, p. 197

...... erectus, p. 199 Thumblike process at middle of right Basal projection of left clasper rather clasper vertical in position, eg., slender and acute, eg., canadensis. . 4 onustus...... 15 4. Right clasper with dorsal process ex- 15. Wall of genital segment with a promi- tending half the length of ventral nent, blunt tubercle at a point well process ...... canadensis, p. 193 above base of left clasper...... Right clasper with dorsal process not arundinicola, p. 198 over one-third the length of ventral Wall of genital segment without tu- process. brevifurcatus, p. 194 bercle above base of left clasper. .16 5. Basal shoulder of right clasper with- 16. Apical half of right clasper with out angulate projection, eg., schotti 6 sides parallel to point near apex...

Basal shoulder of right clasper with a ...... angustulus, p. 197 thumblike or angulate projection, Apical half of right clasper tapering e.g., penipecten ...... 9 gradually from base, erg., onustus. .17 6. Basal shoulder of right clasper with a 17. Length of right clasper beyond base rounded hump...... schotti, p. 197 of dorsal process equal to four Basal shoulder of right clasper with- times the width of base at this point out rounded hump, eg., husseyi... 7 ...... onustus, p. 194 Length of right clasper beyond base 7. Genital segment with a distinct tuber- of dorsal process not over two and cle above base of left clasper...... one-half times the width of base at ...... husseyi, p. 199 this point ...... neglectus, p. 194 Genital segment without tubercle 18. Corium with distinct black or dark above base of left clasper, eg., fuscous mark across apical area, obtectus ...... 8 this mark extending obliquely from 8. Base of left clasper with angulate radius to inner apical angle of cor- shoulder ...... obtectus, p. 199 ium; dark area never broken with Base of left clasper without angulate numerous, minute, light-colored

shoulder .. 196 ...... salicis, p. spots ...... 19 9. Tip of right clasper hooked downward Corium without distinct black mark

. .. penipecten, p. 199 across apical area; sometimes with a Tip of right clasper projecting straight fuscous area, but this dark color or curved upward, eg., buenoi, spi- broken by numerous, paler spots, catus.. 10 or, if not, then dark-colored area on 10. Tip of right clasper straight, eg., radius distinctly darker than oblique buenoi.. 11 infuscation on corium. 28 192 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Irt. I

19. Pronotal disk uniformly deep black, light-colored spots near middle .... 25 with a narrow, pale area at basal Hind femora without distinct white margin; scutellum- yellowish, with band on apical half; light-colored an oblique, black mark on either spots usually rather small ...... 27 side of median line beginning at 25. Second antennal segment black except middle of disk and extending to at base, dorsal aspect not distinctly margin at a point slightly beyond paler; scutellum and clavus clothed middle ...... nigricollis, p. 197 Pronotal disk pale grayish to very with erect black hairs intermixed deep gray, always paler on middle with prominent white, silky pubescence..... buenoi, p. 197 and never deep black ...... 20 Second antennal segment distinctly 20. Scutellum with distinct black mark on almost white or yellowish on dorsal either side of apical half extending aspect, darker at apex and on area from lateral margin obliquely ceph- bordering light-colored basal an- alad to near middle of disk...... 21 nulus..... 26 Scutellum with black spot at margin on either side of apical half, this 26. Propleura mostly black, only lower mark scarcely longer than broad, margin white; tibiae with distinct not more than light-colored and black bands..... at most extending .c.....eanadensis, p. 193 half way to middle of disk...... 24 Propleura mostly pale, with a longi- 21. Pale areas at lower margins of pro- tudinal, black ray crossing coxal pleura extending upon sides of ster- cleft; tibiae light to dusky, not num; hind femora mostly black ex- banded ..... arundinicola, p. 198 cept at base; pale spots small, largest spot not wider than narrow 27. Corium with very heavy, triangular pale band located slightly beyond black mark set obliquely across apex; middle of apical half...... hind femora with two or three large white spots on dorsal surface; cun- ...... husseyi, p. 199 Pale areas at lower margins of pro- eus usually reddish.. erectus, p. 199 not upon sides of Corium with light, almost interrupted pleura extending across sternum ...... 22 fuscous mark set obliquely apex; hind femora with small white 22. Hind femora of female with large ir- spots only; cuneus rarely ifever red- regular pale spots on anterior face, dish...... brevifurcatus, p. 194 these spots connected by a longitudinal, almost colorless bar which 28. Apical half of corium distinctly green- does not attain subapical pale band; ish; second antennal segment black length 7.30-7.60... onustus, p. 194 with pale annulus at base...... Hind femora of female with small ...... penipecten, p. 199 spots; without distinct, longitudinal No part of corium distinctly green ... 29 pale bar on anterior face ...... 23 29. Hemelytra more brownish than black; 23. Membrane with infuscation on cen- dark color on apical area of corium tral area tending to separate into and on middle of clavus broken into small specks; front of head with small spots . 30 black, transverse striations on either Hemelytra sometimes brownish, but side of median line. usually black; dark area not distinctly broken into small spots... .31 ...... neglectus, p. 194 Membrane more uniformly infuscated, 30. Second antennal segment uniformly color not separating into small black except for pallid annulus at specks; front of head without dis- base; vertex narrow, its width less tinct, black striations even when than dorsal width of an eye...... are reddish hemelytra very dark; ...... schotti,p. 197 lines usually evident on frons..... Second antennal segment chiefly yel- ...... spicatus, p. 196 lowish brown, black at apex and on 24. Hind femora with distinct white band area bordering pallid basal annulus; placed slightly beyond middle of vertex wider, equal to dorsal width apical half, and usually with large, of an eye ...... salicis, p. 196 September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF iLLINOIS 193

31. Front and vertex almost colorless to ior angles, hairs taking color of surface yellowish, not distinctly marked from which they arise; propleura black, with black, rarely with short, vague, with lower margins and a mark extending red lines near each eye; scutellum across base of coxal cleft almost white. almost colorless to yellowish; a small Scutellum dull yellow brown, with a black rounded, brown to fuscous spot mark present on either side near apex. located near either margin at middle Hemelytra clothed with prominent yellow- of apical half... angustulus, p. 197 ish pubescence intermixed with groups of Front and vertex marked with trans- white, deciduous woolly hairs, but dark

verse black lines ...... 32 hairs arising from dark areas; greenish gray to 32. Scutellum chiefly very dark brown, fuscous; base, middle and a triangular with irregular paler spots; a median, spot just before cuneus of corium, and sev- slender, pale line present, this line eral spots on embolium, paler and more or irregularly invaded by the darker less translucent. Tip of embolium, an oblique, nearly triangular patch lying just color ...... obtectus, p. 199 Scutellum chiefly pale to grayish, but inside of radius at apex of corium, and area with black mark at either side on bordering apical two-thirds of claval suture, fuscous to black. Cuneus translucent gray, apical half ...... 33 with apex, a small point along inner margin, 33. Corium with a longitudinal pale area and a second near basal angle, black; paler that extends upon base of cuneus parts usually showing some brownish or without interruption; a black line reddish coloration. Membrane fuscous, with paralleling radius but, at apex, a large, almost colorless area just beyond curving outward to fracture...... small areole and tip of cuneus, this area ...... lacunosus, p. 197 Apical half of corium rather distinctly divided by a small fuscous spot which darkened with fuscous, scarcely touches the margin; central area more or paler than dark marks along radius less invaded by a paler streak; cubitus distinctly pallid at apex of areoles. Legs, coxae cortitectus,...... 196 p. and bases of femora pallid; front and intermediate femora with a series of irregular Phytocoris canadensis Van Duzee reddish brown to fuscous marks; poste- Phytocoris eximius Knight (1920, p. 51) not rior femora chiefly black with many large Reuter. and small, light-colored spots; pale patches Phytocoris canadensis Van Duzee (1920, p. most numerous and tending to coalesce on 346). inner side; an irregular, light-colored an- MALE.-Length 5.70, width 2.00. Head nulation located a short space before apex width 0.94, vertex 0.35; yellowish, fre- and a second one situated nearer middle, quently tinged with reddish and marked with but latter annulus interrupted on outside. black. Rostrum, length 2.40, attaining basal Tibiae with fuscous and pale annuli; hind margin of genital segment. Antennae, first pair infuscated and with irregular pallid segment, length 1.28, yellowish, with irregu- spots; a broad, pale area on basal one-third; lar fuscous mottling, bearing five or six spines almost colorless to brownish. Genital long, almost colorless setae; second, 2.77, claspers and flagellum, fig. 176, distinctive chiefly fuscous, paler at base for a space for species. of 0.17, infuscation distinctly paler on dor- FEMALE.-Length 5.70, width 2.05. Usu- sal aspect of middle third, but becoming ally very similar to male in coloration; im- darker toward either end; third, 1.60, chiefly perfect or poorly colored specimens can dark fuscous, pale at base for a space of never with certainty be distinguished from 0.14, with another very narrow, light- females of closely related species. colored space at apex; fourth, 1.25, black. HABITs.-This species occurs on a number Pronotum, length 0.91, width at base 1.60, of plants in various situations; it is largely disk light yellow brown to fuscous, central if not wholly, predacious. Collected in Illi- area frequently grayish green, paler anter- nois on hornbeam (Carpinus caroliniana), iorly, narrow light-colored area at basal gooseberry (Ribes sp.) and buttonbush margin, and six black points which fre- (Cephalanthus occidentalis). quently fuse located near basal margin; KNOWN DISTRIBUTION.-Connecticut, disk distinctly hairy, longest hairs at anter- Georgia, Illinois, Indiana, Iowa, Kansas, 194 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Jrt. 1

Maine, Massachusetts, Michigan, Minne- with several white, smooth spots; second, sota, Missouri, New Jersey, New York, 2.68, black, a narrow white annulus at base; North Carolina, Ohio, Ontario, Pennsyl- third, 1.38, black, white at base; fourth, vania, South Dakota. 1.05, black. Pronotum, length 0.91, width Illinois Records.-Eight males and 15 at base 1.75. Genital claspers and flagellum females, collected June 14 to Sept.. 27, are distinctive for species, fig. 176. from Antioch, Argo, Channel Lake, Dan- FEMALE.-Length 6.00, width 2.30. More ville, De Soto, Dolson, Galena, Harrisburg, robust than male, but very similar in color Herod, Karnak, Lawrenceville, Marshall, and pubescence. Rock Island, Seymour, Shawneetown, Vi- HABITs.-I have collected this species enna. Blatchley (1926b, p. 720) records the most frequently on the bark of apple trees species from Maywood under the name where both nymphs and adults fed on eximius Reuter. psocids. It has, also, been collected on the bark of other trees and is probably preda- Phytocoris brevifurcatus Knight cious on soft-bodied insects living in such situations. In New York the species was Phytocoris brevifurcatus Knight (1920, p. collected from June to October, which in- 53). dicates two generations for the season. This species is very similar to canadensis KNOWN DISTRIBUTION. - Illinois, Iowa, Van Duzee, but lacks the heavy, oblique, Maine, Massachusetts, Michigan, Minne- fuscous mark at the apex of the corium; sota, Mississippi, New Hampshire, New the second antennal segment is darker fus- York, Ontario, South Carolina, South Da- cous on the middle third; thelhead and pro- kota, Washington. notum are distinctly grayish green on the Illinois Records. - ELIZABETHTOWN: paler parts; the posterior femora have May 27-31, 1932, H. L. Dozier, I S. FAIR- smaller pale spots and are not distinctly FIELD: June 12, 1934, DeLong & Ross, 1 S. banded with pale yellow brown. GALENA: June 28, 1935, DeLong & Ross, MALE.-Length 5.80, width 2.14. Head 1 R. KEITHSBURG: June 15, 1932, H. L. width 0.95, vertex 0.34. Rostrum, length I)ozier, I a. SHAWNEETOWN: June 23, 2.51, reaching to seventh abdominal sternite. 1936, Debong & Ross, 1 9. URBANA: June Antennae, first segment, length 1.21; second, 13, 1885, 1 a. 2.55; third, 1.47; fourth, 1.34. Pronotum, length 0.91, width at base 1.69. Genital claspers distinctive for species, fig. 176. Phytocoris onustus Van Duzee FEMALE.-Length 5.80, width 2.20. Head Phytocoris onustus Van Du7ee (1920, p. width 0.96, vertex 0.41. Antennae, first seg- 344). ment, length 1.36; second, 2.77; third, 1.47; MALE.-Length 6.80, width 2.50. Head fourth, 1.21. Pronotum, length 0.91, width width 1.08, vertex 0.35; head pale yellowish; at base 1.70. oblique lines on frons, base and middle of KNOWN DISTRIBUTION. - Illinois, New tylus, lora, and base of jugum, fuscous to York, Ontario. black. Rostrum, length 3.16, reaching fifth Illinois Record. - HORSESHOE LAKE: abdominal sternite. Antennae, first segment, July 11, 1935, DeLong & Ross, 1 . length 1.41, black, with four or five white, smooth spots and a few yellowish bristles; second, 3.33, black, a narrow white annulus Phytocoris neglectus Knight at base; third, 1.60, black., narrow white Phytocoris neglectus Knight (1920, p. 54). area at base; fourth, 1.29, black. Pronotum, This resembles canadensis Van Duzee, length 1.12, width at base 2.00. Clothed but the second antennal segment is uniformly with erect, short, black hairs intermixed black with a white annulation at the base, with a moderate amount of recumbent, pale the middle tibiae have an apical white band yellowish, silky pubescence. General color and the infuscation at the middle of the fuscous to black over a pale yellowish, membrane tends to form small specks. ground color; propleura, except lower mar- MALE.-Length 6.20, width 2.20. Head gin, black; lateral margins and basal band width 0.99, vertex 0.32. Rostrum, length of pronotal disk, black; basal edge white; 2.60, extending to fifth abdominal sternite. scutellum yellowish, a black marginal spot Antennae, first segment, length 1.17, black, on either side on apical half; hemelytra September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 195

id&VREV/FLURCATUS t~~~~~~CsSCHOTTI CXHUSSEY/

U.~ ~ ~ ~ ~~~~~U

CORT/TE:C fl/S ~LACUNOSUS ARLDIN/NICOLA

A ~~~~~~~A TULSUS ONUS TUS NEGLECTUS

Fig. 176.-Male gential claspers of Phytocoris, Group II. a, left clasper, lateral aspect; B, right clasper, lateral aspect;. C, flagellum. 196 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22,, Jrt. 1 shaded with very dark brown spots on em- of apical half; middle tibiae with an almost bolium; an area at middle, and a triangular colorless band at apex. patch at outer apical angle of corium, pale FEMALE.-Length 6.20, width 2.16. Head yellowish and translucent; cuneus largely width 1.01, vertex 0.39. Antennae, first black with yellowish spots and a variable segment, length 1.43; second, 3.11; third, yellowish area at base. Membrane fuscous 1.71; fourth, 1.43. Pronotum, length 0.95, with a pale marginal spot on either side ex- width at base 1.65. More robust than male, tending irregularly toward middle. Legs but very similar in color and pubescence. colored almost as in canadensis Van Duzee, HABITS.-I collected specimens of this but hind femora with large irregular pallid species only on the trunks of elm trees spots on anterior face, these spots connected (Ulmus sp.) where the adults were well by a longitudinal pale bar which does not concealed as they crouched in crevices of attain subapical pale band. Genital clasp- the bark. ers and flagellum distinctive for species, fig. KNOWN DISTRIBUTION. - Illinois, New 176. Hampshire, New York, Ontario. FEMALE. - Length 7.10, width 2.64. Illinois Record.-ANTIOCH: July 5-7, Larger and more robust than male, but 1932, T. H. Frison, 1 a. very similar in coloration. HABITS.-I have collected this species Phytocoris spicatus Knight most frequently on the bark of hickory trees (Carya sp.) in shaded, humid surroundings. Phytocoris spicatus Knight (1920, p. 55). The color of this mirid matches the bark so The coloration of this species is very closely that it is difficult to see when it is similar to that of neglectus Knight, but the crouching in crevices on the trunk of the membrane is more uniformly infuscated. tree. Predacious habits are indicated. MALE.-Length 6.00, width 2.00. Head KNOWN DISTRIBUTION.- Georgia, Illi- width 1.04, vertex 0.29; frons with reddish nois, Maine, Massachusetts, New Hamp- lines. Rostrum, length 2.81, reaching sixth shire, New York, Ontario, Pennsylvania. abdominal sternite. Antennae, first seg- Illinois Record.-NORTH ERN ILLINOIS: ment, length 1.38, black, with five or six July, 2 9 . white, smooth spots; second, 2.85, black, a narrow white annulus at base; third, 1.56, cortitectus black, narrow white area at base; fourth, Phytocoris Knight 1.12, black. Pronotum, length 0.91, width Phytocoris cortitectus Knight (1920, p. 55). at base 1.73. Clothed with fuscous to black, MVALE.-Length 6.00, width 2.00. Head simple pubescence intermixed with patches width 1.04, vertex 0.32. Rostrum, length and tufts of silvery and some golden, silky 2.72, reaching to sixth abdominal sternite. pubescence. Genital claspers and flagellum Antennae, first segment, length 1.28, black, distinctive for species, fig. 176. with eight or nine smooth, white spots; sec- FEMALE.-Length 6.30, width 2.20. More ond, 2.94, fuscous to black, with a yellowish robust than male, but very similar in color dorsal spot and a narrow white annulus at and pubescence. base; third, 1.64, black, yellowish at base; KNOWN D)ISTRIBUTION. - Illinois, Iowa, fourth, 1.21, black. Pronotum, length 0.86, Maine, Maryland, Massachusetts, Minne- width at base 1.60; calli whitish; disk dusky sota, North Carolina, New York. to fuscous; four black points located near Illinois Record.-GALESBURG: I1 posterior margin. Clothed with simple, black pubescence intermixed with tufts of silvery, silky hairs. Hemelytra translucent and Phytocoris salicis Knight slightly darkened, irregularly shaded with Phytocoris salicis Knight (1920, p. 56). fuscous; without a strong, oblique, fuscous MALE.-Fig. 177. Length 6.00, width mark across apical area of corium; cuneus 2.12. Head width 0.97, vertex 0.35; head pale, translucent, -with apical half infus- yellowish; oblique lines on frons and mark cated; membrane fuscous, central area var- on middle of tylus reddish. Rostrum, length ied with lighter color. Legs pallid and dark- 2.73, reaching seventh abdominal sternite. ened with fuscous; femora with numerous, Antennae, first segment, length 1.27, black, small, almost colorless spots, hind pair with with three or four large, white, smooth a well-defined, oblique, pallid band at middle spots; second, 2.85, dusky yellow to black, September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 197 basal annulus white; third, 1.55, black, brown; second, 2.98, yellowish brown, more pallid at base; fourth, 1.16. Pronotum, fuscous at apex and next to pallid base; length 0.99, width at base 1.73. General third, 1.47, black, pallid at base; fourth, coloration dusky to brownish; spots on base 1.12, black. More robust than male and of pronotal disk, tip of clavus, apex of em- usually lighter in color. bolium and of cuneu's, black; fuscous color- HABITS.-Breeds on willow (chiefly Sa- lix nigra) where the species appears to be predacious on soft-bodied insects. KNOWN DISTRIBUTION.-Connecticut, District of Columbia, Illinois, Iowa, Maine, Maryland, Massachusetts, Michigan, Min- nesota, Mississippi, New Hampshire, New Jersey, New York, North Dakota, Ohio, Ontario, Pennsylvania, South Dakota. Illinois Records.-Seventeen males and 15 females, taken June 1 1 to July 9, are from Alton, Antioch, Elizabeth, Galena, Galesburg, Golconda, Monticello, Savanna, Seymour, Waukegan. Phytocori8 lacunosus Knight Phytocoris lacunosus Knight (1920, p. 56). Not taken in Illinois; known from Minne- sota and New York. Collected on the bark of hornbeam (Carpinus caroliniana). Phytocoris angustulus Reuter Phytocoris angustulus Reuter (1909, p. 29). Known from New York, North Carolina, Nova Scotia, Vermont; not yet collected in Illinois. Phytocoris buenoi Knight Phytocoris buenoi Knight (1920, p. 57). Fig. 177. Phytocoris salicis, dc. Not taken in Illinois; known from Massa- chusetts, New York, Ontario. Adults and ation of hemelytra interspersed with pallid nymphs have been collected on Norway and brownish marks and dots; membrane spruce (Picea excelsa). clear, marked with patches of fuscous; cubitus white around apex of larger areole. Legs pallid; apical half of femora marked with Phytocoris nigricollis Knight reddish brown; hind pair chiefly dark brown, Phytocoris nigricollis Knight (1923d, p. 636). with numerous white spots, a larger white Known only from New Hampshire and spot forming an incomplete subapical band; North Carolina. tibiae banded with fuscous; apices of middle pair pallid; hind pair chiefly dark fuscous. Phytocoris schotti Knight Dorsum clothed with pale to brownish, simple pubescence thickly intermixed with sil- Phytocoris schotti Knight (1926g, p. 162). very to golden yellow, silky hairs. Genital The coloration of this species is suggestive claspers and flagellum distinctive for species, of that of salicis Knight, but the dark areas fig. 176. are black rather than brown; the apical FEMALE.-Length 6.30, width 2.30. An- half of the corium is largely pallid, except tennae, first segment, length 1.34, chiefly near the inner margin, and is without an white, irregularly marked with reddish oblique infuscation; the cuneus is almost 198 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Jrt. 1 entirely colorless, but the apex and two ing to sixth abdominal sternite. Antennae, spots on the inner margin are black, while first segment, length 1.16, tapering to be- the outer margin is marked with red. The come more slender on apical half, chiefly membrane is marbled with fuscous, and white, black on anterior aspect, with only the areoles are chiefly dark fuscous, with one or two small, pallid spots cutting into white veins at apices. The legs are marked edge of dark color, setae short, brownish; much as in salicis, but the black color on second, 2.51, chiefly yellowish brown, black the femora is irregularly broken by two or at apex and next to pallid basal annulus; three large, and many small, white spots. third, 1.34, yellowish, fuscous apically; MALE.-Length 5.20, width 1.90. Head fourth, 0.73. Pronotum, length 0.88, width width 1.00, vertex 0.26; frons with five or at base 1.60; pale yellowish to dusky; calli six oblique, reddish lines on either side of pallid; lowver margin of propleura and area median line; base of tylus and spot on either on coxal cleft whitish, a black ray crossing side of basal half, dorsal margins of juga lower margin of coxal cleft and flaring out and lora, and slender median line on apical at basal margin; basal edge of disk white, half of tylus, reddish. Rostrum, length 2.34, bordered by four black points which are extending to fifth abdominal sternite. An- often connected by dark color. Dorsum tennae, first segment, length 0.97, very dark clothed with pale to brownish, simple pubes- brown, with several small, smooth white cence sparsely intermixed with more re- spots on dorsal aspect, spines pale; second, cumbent, silvery, silky pubescence. Scutel- 2.30, black, narrow pallid area at base; luni usually pale yellowish, sometimes third, 1.23, black, pale at base and at ex- dusky; a small fuscous spot indicated on treme tip; fourth, 0.91, black. Pronotum, either margin at middle of apical half. Hem- length 0.84, width at base 1.50; propleura elytra dusky gray, with an irregular black black; lower margin, and spot at top of area on middle of claval vein and a subtri- coxal cleft, white; the white of lower mar- angular one on inner apical angle of corium; gin continued as a ray upon black sternum. embolium uniformly yellowish gray, except Clothed with fuscous to black, simple pubes- for darkened extreme tip; cuneus with apex cence intermixed with white, silky pubes- and spot on inner margin, and spot on inner cence; more yellowish hairs on head and margin of paracuneus, fuscous to black. embolium than black ones. Genital claspers Membrane uniformly pale fuscous, scarcely distinctive for species, fig. 176. paler near apex of cuneus; cubitus white KNOWN DISTRIBUTION. - Illinois and around apex of areoles, fuscous where it New Jersey. separates areoles. Legs pale yellowish, Illinois Record.-WHITE HEATH: Sept. tibiae without dark bands; spines yellowish 10, 1929, C. C. Goff, 1 A, KC. to dark brown; hind pair with black micro- setae; femora dark brown to black, with Phytocoris arundinicola new species numerous, minute, pallid spots; hind pair with two rather distinct pallid bands on This species is distinguished from allied apical half; tarsi fuscous to black. Venter ones by its general pale gray color, with a almost white to yellowish; lateral line fus- conspicuous black spot on the inner apical cous; sides of genital segment fuscous. Geni- angle of the corium; it also is distinguished tal claspers distinctive for species, fig. 176. by the pale and black, unspotted, first an- FEMALE.-Length 5.60, width 2.16. Head tennal segment. The structure of the male width 0.99, vertex 0.41. Antennae, first seg- genital claspers is distinctive, fig. 176; the ment, length 1.21; second, 2.73; third, 1.55; genitalia are apparently nearest in form to fourth, 1.38. Pronotum, length 0.95, width those of buenoi Knight and schotti Knight. at base 1.64. Very similar to male in color MALE.-Length 5.60, width 2.16. Head and pubescence, but light areas perhaps width 0.95, vertex 0.35; head white to yel- more extensive. lowish, with incomplete lines on frons; HABITs.-Breeds on switch cane (Jrun- marks on middle and on median line at apex, dinaria tecta); doubtless predacious. basal half of lora, and dorsal half of buc- Holotype, male.-Vienna, Ill.: July 10, culae, reddish brown to fuscous; a pair of 1935, DeLong & Ross. marks, beginning on collum and extending Allotype, female. -Same data as for across collar and between calli, distinctly holotype. red orange. Rostrum, length 2.64, extend- Paratypes.-ILLINOIS.-VIENNA: Same September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 199 data as for holotype,' I S, 3 ! ; June 14, and 7 females, taken June 13 to Sept. 6, 1934, DeLong & Ross, 3 S. are from Algonquin, Antioch, Browns, Chi- cago, Duquoin, Eichorn, Galesburg, Harris- Phytocoris husseyi Knight burg, Havana, Homer Park, Kankakee, Karnak, Mahomet, Maywood, Metropolis, Phytocoris husseyi Knight (1923d, p. 639). Monticello, Pekin, Pulaski, Urbana, Vienna, Not taken in Illinois; known only from White Heath. Minnesota and Ohio. Phytocoris penipecten Knight Phytocoris erectus Van Duzee Phytocoris penipecten Knight (1920, p. 58). Phytocoris erectus Van Duzee (1920, p. 345). Not taken in Illinois; known only from MALE.-Length 5.40, width 2.00. Head Alabama, Connecticut, Louisiana, Massa- width 0.94, vertex 0.36. Rostrum, length chusetts. 2.51, extending to fifth abdominal sternite. Antennae, first segment, length 1.16, black, Phytocoris obtectus Knight basal two-thirds with white, smooth spots so large that black ground color is reduced Phytocoris obtectus Knight (1920, p. 58). to a network; second, 2.50, black, dorsal as- Not taken in Illinois; known only from pect partly yellowish brown, white annulus New York and Ohio. at base; third, 1.28, black, pallid at base and extreme tip; fourth, 1.20, black. Pro- Group III notum, length 0.87, width at base 1.56. Dor- sum clothed with simple, fuscous pubes- The species of this group are apparently cence intermixed with a moderate amount all phytophagous. of silvery, silky pubescence. General color nearly white to yellowish, shaded with fus- KEY TO SPECIES cous. Basal submargin of pronotal disk with the usual four black points; scutellum with 1. Clavus and corium rather uniformly oblique black marks on apical half; apical colored ...... 2 area of corium with heavy, very dark brown Clavus and corium not uniformly col- subtriangular mark, and a contrasting pal- ored; marked with fuscous, or reddish brown to fuscous, with paler lid spot just behind which joins with pallid spots 4 basal half of cuneus; paracuneus reddish; ...... membrane fuscous, with a paler spot near 2. Hemelytra reddish; embolium and cun- tip of cuneus and a smaller one just beyond eus translucent and yellowish...... on margin; cubitus white about tip of larger ...... mundus,p. 201 areole. Hind femora very dark brown, with Hemelytra yellowish to fulvous, or numerous small and some large white spots translucent and brownish.... 3 and a rather distinct pallid annulus slightly 3. Hemelytra yellowish to fulvous; femora beyond middle of apical half; tibiae banded dusky yellow with numerous small, with pallid and black, middle pair with pale pale dots .... fulvus, p. 201 band on apex. Genital claspers and flagel- Hemelytra dusky brown, translucent; lum distinctive for species, fig. 176. femora reddish brown, with con- FEMALE.-Length 5.30, width 2.10. More spicuous white spots...... robust than male, but very similar in color ..... uniformis, p. 201 and pubescence. 4. Hemelytra pale to yellowish; corium HABITs.-Predacious; Illinois specimens with an oblique, fuscous mark -on collected on willow (Salix sp.), cypress basal half and a second one on innter (Taxodium distichum) and hornbeam (Car- apical angle; cuneus pale, apex and pinus caroliniana). two spots on inner margin black..

KNOWN DISTRIBUTION.-Alabama, Dis- . .... junipericola, p. 201 trict of Columbia, Illinois, Iowa, Louisiana, Hemelytra marked otherwise ...... 5 Maine, Maryland, Michigan, Minnesota, 5. Pronotal disk with black spots on basal Mississippi, Missouri, New Hampshire, margin; apical area of corium with New York, Ohio, Ontario, Utah. strong fuscous marks...... Illinois Records.-Twenty-seven males exemplus, v. 201 200 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. I

Pronotal disk without black spots.... 6 MAXLE.-Length 5.00, width 1.70. Head width 0.97, vertex 0.37. Rostrum, length 6. Light-colored dots and spots on hind 2.03, reaching fifth abdominal sternite. An- femora uniting to form a subapical tennae, first segment, length 0.71, greenish band or transverse pale mark ...... 7 Dots on hind femora not forming a dis- yellow, darkened with deep brownish, with tinct light-colored band or large five or six smooth, white spots on dorsal side, and beset with 9 or 10 dark setae; second, mark ...... 8 2.05, dark fuscous, paler on basal half; third, 7. Cuneus with a narrow white area along 1.05, black; fourth, 0.85, black. Pronotum, outer margin and two black dots on length 0.78, width at base 1.36. Clothed with this white edge. angustifrons, p. 201 brownish, simple hairs intermixed with sil- Cuneus with outer margin reddish very, silky pubescence. Head, pronotum and brown and marked with three or four ventral parts greenish to yellowish; base of white dots...... pinicola, p. 201 pronotum, sides of tylus, dorsal margins of 8. Iength of second antennal segment juga and lora, base of head, indistinct striae twice as great as width of head.... on front, sternum, and sides of venter, tinged ...... diversus, p. 200 with reddish brown; femora, except at bases, Length of second antennal segment less and tibiae, deep brownish, with many light than twice width of head...... to white spots; hind femora with rather ...... conspersipes, p. 201 large spots on dorsal aspect. Genital claspers and flagellum distinctive for species, fig. Phytocoris diversus Knight 178. FEMALE.-Length 4.80, width 1.73. Very Phytocoris diversus Knight (1920, p. 60). similar to male in color and pubescence. The general aspect of this species is sug- HOST PLANT. - White pine (Pinus gestive of fulvus Knight, but the light, yel- strobus). low brown coloration on the inner apical KNOWN DiSTRIBUTION.-Illinois, Maine, half of the corium and the cuneus is more Minnesota, New Hampshire, New York. distinct. Illinois Records.-STARVED ROCK STATE

ANGUST/FRONS AA CONSPERS/PES

AA8 LV~~~~TEPLI . JUN/PER/COLA

a U~~~~~~~~LNIFORMS

MUNDUSNAP. ...PlIVCOLA Fig. 178.-Male genital claspers of Phytocoris, Group III. Ad, left clasper, dorsal aspect; B, right clasper, lateral aspect; C, flagellum. September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 201

PARK: July 14, 1932, on Pinus strobus, Doz- Phytocoris conspersipes Reuter ier & Park, 11 , 19 ; Sept. 17, 1935, De- Long & Ross, 1 S. WHITE PINES FOREST Phytocoris conspersipes Reuter (1909, p. 22). STATE PARK: July 12, 1934, DeLong & Ross, Not taken in Illinois; known from District 2a,3Q. of Columbia, Maryland, New Jersey, North Carolina, Pennsylvania, South Carolina, Vir- ginia. Feeds on Virginia pine (Pinus virgin- Phytocoris mundus Reuter iana). Phytocoris mundus Reuter (1909, p. 18). Not taken in Illinois; known from Dis- Phytocoris junipericola Knight trict of Columbia, Maryland, New Jersey, Pennsylvania, Virginia. Feeds on Virginia Phytocorisjunipericola Knight (1927b, p. 16). pine (Pinus virginiana). Known from District of Columbia, Indi- ana, Maryland; not yet taken in Illinois. Phytocoris fulvus Knight Breeds on red cedar (Juniperus virginiana). Phytocoris fulvus Knight (1920, p. 59). Group IV Not yet taken in Illinois; known from The species of this group are phytophagous. Maine, New York, Ontario, Pennsylvania. Occurs on white pine (Pinus strobus). KEY TO SPECIES Phytocoris uniformis Knight 1. Pronotal disk frequently red but without four distinct, reddish vittac on a uniformis Knight (1923d, p. 643). Phytocoris paler background ...... 2 Originally described from Long Island, Pronotal disk with four orange or red and the coastal area of Massa- New York, vittae on a background ...... 8 chusetts. This species has subsequently been paler recorded from Maryland, Mississippi, 2. Pronotal disk with four black spots on North Carolina, Virginia, but has not yet basal submargin; scutellum usually been taken in Illinois. It has been collected uniformly pale, sometimes with in- on pitch pine (Pinus rigida), which possi- distinct fuscous dots forming a spot bly is the normal host. at either side of apical half ...... quercicola, p. 202 Pronotal disk without four distinct Phytocoris pinicola Knight black spots on basal submargin; Phytocoris pinicola Knight (1920, p. 59). scutellum usually with orange or Not taken in Illinois; specimens known red at either side on apical half.... 3 from Connecticut, Massachusetts, Minne- 3. Scutellum unmarked, uniformly yel- sota, Mississippi, New Jersey, New York. lowish ... 4 Feeds on pines (Pinus resinosa and P. syl- Scutellum marked with reddish or vestris). fuscous ... 5 4. Hemelytra rather uniformly fusco- Phytocoris angustifrons Knight reddish to roseate; embolium and outer margin of scutellum paler.... Phytocoris angustifrons Knight (1926g, p. .... taxodii, p. 203 164). Hemelytra yellow; clavus and basal Not taken in Illinois; known only from one-third of corium dark reddish; Florida, Louisiana, Mississippi. Collected cuneus with many clear on pine (Pinus sp.). red minute, spots..... luteolus, p. 209 Phytocoris exemplus Knight 5. Pronotum chiefly red, more area red than pale or fuscous...... 6 Phytocoris exemplus Knight (1926g, p. 163). Pronotum with more area pale or Known at present only from Louisiana, fuscous than red ...... 7 but should be found wherever the cypress 6. Hemelytra with many small, distinct, (Taxodium distichum) grows; that is the white spots; calli darkened with tree on which it occurs. fuscous. ... confluens, p. 205 202 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. I

Hemelytra with only indistinct, white Phytocoris rubellus Knight spots, nearly uniformly deep orange Phytocoris rubellus Knight (1926g, p. 166). red; calli pale...... puelta, p. 207 7. Pronotal 'disk with base ahd lateral MALE.-Length 4.80, width 1.54. Head margins dark fusco-reddish; scutel- width 0.86, vertex 0.25. Rostrum, length lum yellow, a red mark at either 1.94, extending to base of fourth abdominal side on apical half but without sternite. Antennae, first segment, length vittae at middle of base...... 0.81, reddish, with three or four large, smooth white spots and about the same ...... infuscatus, p. 204 Pronotal disk chiefly pale, not dis- number of small ones, set with six or eight tinctly darkened laterally or at base; pallid bristles, some of which in length ex- base of scutellum with an orange- ceed thickness of segment; second, 2.10, colored vitta on either side ofmedian yellowish, sometimes tinged with red, apex line, these frequently extending to dusky; third, 1.06, yellowish, apex dusky; join with orange mark at either side fourth, 1.00, fuscous. Pronotum, length 0.71, width at base reddish to fuscous; me- on apical half...... olseni, p. 205 1.28; 8. Second antennal segment almost dian line and line extending upon vertex, colorless, with a slender, black line and frequently a line on either side of pro- on anterior aspect; embolium and notal disk, pallid. Scutellum reddish, basal outer half of corium green; clavus angles and apex yellowish. Hemelytra red- greenish to fuscous, with a rather dish to fuscous; embolium with several ob- large, irregular, reddish blotch on solete pallid marks. Cuneus reddish, and middle and a smaller one on basal scarcely darker at apex. Membrane pale fuscous, marbled with paler color; veins half...... tibialis, p. 205 Second antennal segment without a fuscous although pale to reddish at apices slender, black line on anterior as- of areoles. Legs pale yellowish to reddish pect; embolium and outer half of and marked with paler spots, exhibiting corium marked with reddish ...... 9 more red than in puella Reuter. Clothed 9. Hemelytra with a yellow, triangular with pallid to fuscous, simple pubescence area just before cuneus; clavus, intermixed with white, silky pubescence, the basal area of corium and embolium, latter tending to form spots on hemelytra. but with FEMALE.-Length 4.80, width 1.63. Head and cuneus, bright red width 0.86, vertex 0.37. Antennae, first many small, paler markings...... segment, length 0.86; second, 2.06; third, .venustus, p. 206 Hemelytra and apical area of corium 1.08; fourth, 0.95. Pronotum, length 0.77, marked with reddish; or, ifnot, then width at base 1.37. Coloration usually a basal half of corium not bright red. 10 deeper red than in male; hemelytra pallid to red. 10. First antennal segment reddish, with HOST PLANT. - Sandbar willow (Salix three or four large, smooth white longifolia). spots and three or four small spots KNOWN DISTRIBUTION. - Illinois, Indi- .. rubellus, p. 202 ana, Iowa, Kansas, Missouri, South First antennal segment not distinctly Dakota. marked with red and white spots. . 11 Illinois Records.-Twenty-six males and 11. Apical area of corium, or area behind 30 females, taken June 1 to Aug. 24, are tip of clavus, without netlike from Alton, Grafton, Grand Tower, Ha- marks; dorsum pale greenish yel- vana, Kankakee, Meredosia, Putnam, Quin- low; markings of hemelytra dusky cy, Savanna, Starved Rock State Park, Wau- .. caryae, p. 207 kegan. Apical area of corium with netlike of or 12 markings orange red...... Phytocoris quercicola Knight 12. Length of first antennal segment greater than width of head and ver- Phytocoris quercicola Knight (1920, p. 60). tex combined ...... puella, p. 207 MALE.-Length 4.70, width 1.70. Head Length of first antennal segment less width 0.91, vertex 0.30. Basal half of lora, than width of head and vertex com- spot on either side of tylus, transverse mark bined ...... depictus, p. 208 across front, and four marks on vertex, September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 203

red; front with prominent, nearly colorless nesota, New York, North Carolina, On- hairs. Rostrum, length 2.20, extending to tario, Virginia. base of genital segment. Antennae, first Illinois Records. - CHAMPAIGN: June segment, length 0.97, pallid, three irregular 27, 1932, on oak, Harper, 1 9. DUBOIS: marks on dorsal surface, broad, fusco- Aug. 8, 1917, 1 !. GALESBURG: 1Id; June brownish or reddish band at apex, beset 24, 1892, 1 9 ; July 27, 1892, 2 d . GLENDON with six or eight prominent, pale spines; PARK: Aug. 19, 1903, A. B. Wolcott, I a, second, 2.25, pale brownish, pallid annulus FM. URBANA: June 27, 1932, Frison & Ross, at base, area next to this and at apex 2 S, 1 9 ; Aug. 11, 1932, on Quercus mac- dark fuscous; third, 1.25, fusco-brownish, rocarpa, H. H. Ross, 1 9 ; Sept. 12, 1891, annulus at base and middle, and a narrow C. A. Hart, 1 8 . one at apex, pallid; fourth, 1.04, fuscous. Pronotum, length 0.75, width at base 1.43; Phytocoris taxodii Knight yellowish, outer halves of calli, and broad area extending rearward, fusco-brownish to Phytocoris taxodii Knight (1926g, p. 165). dark fuscous; a basal, submarginal, fuscous This species is allied to rufus Van Duzee, line with two black points on either side of a species known to occur only in Florida, median line; narrow area at basal margin but differs from it in the longer rostrum pallid; pubescence yellowish to dusky, long- and longer first antennal segment; the basal est hairs situated anteriorly and on collar. half of the right genital clasper of the male Scutellum pallid, median line frequently is more slender in taxodii than in rufus. reddish, either side of this an indistinct vitta MALE.-Length 5.10, width 1.70. Head composed of small brownish dots. Hemely- width 0.94, vertex 0.26; color of head yel- tra pale yellowish, more or less translu- lowish, sometimes tinged with red. Rostrum, cent; an irregular patch at middle of clavus, length 2.50, attaining base of genital seg- and a larger one just opposite on corium, ment. Antennae, first segment, length 1.03, fusco-brownish, dark color broken by small, slightly thicker at base and apex, a few irregular, light spots; frequently apex of weak, yellowish setae on basal half, yellow corium with a smaller, dark patch and a to reddish; second, 2.34, yellowish; third, series of fusco-brownish spots bordering 1.30, yellowish to dusky; fourth, 1.05, claval suture; embolium and cuneus with dusky. PronQtum, length 0.80, width at base small spots of reddish in hypodermis. Mem- 1.40; reddish, becoming fusco-reddish near brane pallid; infuscation usually composed base of disk; narrow area at basal margin, of fine irregular spots; a large spot at apex median line on collar, and area between and a smaller one at either side joining calli, paler. Scutellum yellowish or tinged margin, central area and that within are- with reddish. Clothed with golden yellow oles more sparsely marked with fuscous to brown, simple pubescence sparsely inter- dots; cubitus pallid, radius infuscated. Front mixed with more recumbent, silvery, silky and middle tibiae pallid, with three fuscous pubescence. Hemelytra yellowish to red- annuli; hind pair with two reddish brown dish; inner apical angles of corium dark red bands on basal half; femora pallid, reticu- to fuscous, but this dark color not extend- lated with reddish brown; hind pair with ing forward along radial vein; cuneus rose two irregular pallid bands on apical half, red, narrow area along outer margin yel- dark color broken by numerous light-col- low; membrane fusco-brownish, veins red. ored spots. Venter pallid, sides flecked with Ventral surface and legs yellowish; hind reddish. Genital claspers and flagellum dis- femora reddish, except basal one-third, and tinctive for species, fig. 179. with many small, yellowish spots; base of FEMALE.-Length 4.80, width 1.80. Head hind tibiae reddish. Genital claspers dis- width 0.95, vertex 0.36. Antennae, first seg- tinctive, fig. 179. ment, length 1.08; second, 2.25; third, 1.12; FEMALE.-Length 5.30, width 1.80. Head fourth, 1.04. Pronotum, length 0.82, width width 0.91, vertex 0.34. Antennae, first seg- at base 1.56. Very similar to male in color ment, length 1.10; second, 2.40; third, 1.31; and pubescence. fourth, 1.04. Pronotum, length 0.85, width HOST PLANT.-Bur oak (Quercus macro- at base 1.49. Very similar to male in color carpa). and pubescence. KNOWN DISTRIBUTION. - Florida, Illi- HOST PLANT.-Bald cypress (Taxodium nois, Iowa, Maryland, Massachusetts, Min- distichum). 204 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22,Jart. I

KNOWN DISTRIBUTION. - Georgia, Illi- segment. Antennae, first segment, length nois, Louisiana, Mississippi. 1.08, pale yellowish, fusco-brownish near Illinois Records.-ELIZABETHTOWN: apex, dusky at base, pubescence yellowish to July 25, 1930, on Taxodium distichum, dusky, basal half with five or six yellowish

DE:PICTrUS CARKAE

Ei il. LUJTEOLUS

QUE/ C/COLA

TAXODII RUBELLUS VENUS WuS Fig. 179. -.Male genital claspers of Phytocoris, Group IV. A, left clasper, lateral aspect; Ad, left clasper, dorsal aspect; B, right clasper, lateral aspect; C, flagellum. Knight & Ross, 3 v. HORSESHOE LAKE: setae; second, 2.74, uniformly yellowish; July 11, 1935, DeLong & Ross, 1 S. third, 1.49, yellowish; fourth, 1.20, yellowish PULASKI: June 28, 1909, 2 & . to fuscous. Pronotum, length 0.84, width at base 1.50; disk yellowish to fusco-reddish, Phytocoris infuscatus Reuter basal submargin darker; calli and area between them pallid, collar yellowish, a red- Phytocoris infuscatus Reuter (1909, p. 20). dish patch on either side of median line, also MALE.-Length 5.30, width 1.94. Head an orange spot just behind inner angle of width 0.88, vertex 0.28; color of head yel- each callus; clothed with rather prominent lowish, dorsal half of juga, basal half of pallid to yellowish pubescence; propleura lora, bucculae in part, and mark between pallid, a fusco-brownish line crossing lower bases of antennae, dark red; tylus dark red, extremity of coxal cleft and extending to two irregular, yellowish marks on basal half near posterior margin. Scutellum pale yel- separated by small red wedge at base; front lowish, a reddish spot on margin on either and vertex clothed with prominent yellow- side of apical half, but broad, yellowish line ish hairs; either side of front with indica- at meson. Hemelytra with emboliar mar- tions of transverse reddish lines. Rostrum, gins very slightly arcuate; reddish to fusco- length 2.70, nearly attaining base of genital reddish, with many more or less confluent, September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 205 minute white spots, basal half more fuscous base 1.47; greenish; disk with four longi- than reddish; cuneus red, broken by small, tudinal orange stripes. Hemelytra-yello 'sh translucent spots at middle. Membrane green to green; clavus with a rather large smoky to fusco-brownish, infuscation of reddish blotch on middle and a smaller one areoles somewhat broken into small spots, on basal half; inner half of corium with apical half with slightly darker fuscous area reddish spots and blotches. Apex of cuneus touching margin beyond cuneus. Legs pale and two spots on paracuneus reddish. Mem- yellowish; hind femora, except basal one- brane fuscous, with irregular pale and third, black with a red cast, with many, translucent areas behind cuneus and ex- small yellowish spots and larger spots on tending across middle. Legs greenish yel- dorsal aspect at middle, a yellowish band low; front and middle tibiae with very dark slightly beyond middle of apical half; front red-brown line on dorsal.aspect; hind fem- tibiae with indistinct brownish band on ora with apical half dark red brown, this middle and near base; hind pair with broad, color area broken by numerous small and reddish band at base. Venter yellowish to large, yellowish spots and a distinct sub- fuscous, darker laterally and on genital seg- apical, pale yellowish annulus. Genital ment. Genital claspers and flagellum dis- claspers distinctive, fig. 179; right clasper tinctive for species, fig. 179. very long. FEMALE.-Length 5.50, width 2.00. Head FEMALE.-Length 5.50, width 2.00. Head width 0.91, vertex 0.39. Antennae, first width 0.88, vertex 0.36. Antennae, first seg- segment, length 1.23; second, 2.94; third, ment, length 1.12; second, 2.34; third, 1.51; 1.55; fourth, 1.17. Pronotum, length 0.86, fourth, 1.35. Pronotum, length 0.86, width width at base 1.51. More robust than male, at base 1.47. Clothed with yellowish to very similar in coloration, but pale area on fuscous, simple pubescence sparsely inter- apical half of corium broader, and with mixed with yellowish, silky pubescence. Col- pallid and orange rays behind calli. oration very similar to that of male. HOST PLANT.-Hickory (Carya sp.) HABITS.-Breeds among weedy, herba- KNOWN DISTRIBUTION.-District of Co- ceous plants in damp situations; Illinois lumbia, Georgia, Illinois, Iowa, Massa- specimens collected on mountain mint chusetts, Mississippi, New York, North (Pycnianthemum sp.). Carolina, Ohio, Pennsylvania. KNOWN DISTRIBUTION.-Alabama, Con- Illinois Records. - ILLINOIS: June 26, necticut, District of Columbia, Florida, Illi- 1892, 1 S . BLUFF SPRINGS: June 10, 1932, nois, Iowa, Maryland, Massachusetts, Ross & Mohr, 19. DUBoIs: July 3, 1909, Michigan, Minnesota, Mississippi, Missouri, 1 9. GEFF: June 12, 1934, DeLong & Ross, New Jersey, New York, North Carolina, 19. QUINcY: June 15, 1883, 1 . Ohio, Ontario, Texas, Virginia, Wisconsin. Illinois Records.-Forty-four males and Phytocoris olseni Knight 23 females, taken June 22 to Oct. 2, are from Albion, Alto Pass, Anna, Browns, Car- Phytocoris olseni Knight (1923d, p. 647). bondale, Cave-in-Rock, Dongola, Dubois, Not taken in Illinois; known from Flor- East St. Louis, Elizahethtown, Gibsonia, ida, Mississippi, New Jersey, New York, Golconda, Grand Tower, Havana, Herod, Virginia. Lawrenceville, McClure, Metropolis, Mon- ticello, Newton, Norris City, Olive Branch, Phytocoris tibialis Reuter Pulaski, Rosiclare, Shawneetown, Temple Hill, York. Phytocoris tibialis Reuter (1876, p. 68). MALE.-Length 5.10, width 1.90. Head width 0.88, vertex 0.35. Rostrum, length Phytocoris confluens Reuter 2.60, extending to sixth abdominal sternite. Phytocoris puella var. confluens Reuter (1909, Antennae, first segment, length 1.08, yel- p. 20). lowish, with four or five reddish brown MALE.-Length 4.60, width 1.43. Head marks; second, 2.38, yellowish, a distinct width 0.83, vertex 0.26; head chiefly bright fuscous to black line on anterior aspect, red; geminate mark at base of tylus, apices with white annulus at base; third, 1.47, of juga and lora, and ventral margin of fuscous, pale yellowish at base; fourth, 1.30, bucculae, pallid. Rostrum, length 2.20, fuscous. Pronotum, length 0.86, width at reaching sixth abdominal sternite, pale yel- 206 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. I lowish, black at apex. Antennae, first seg- BURG: June 25, 1932, on Betula nigra, Ross, ment, length 1.00, reddish yellow, pubes- Dozier & Park, 2 a. OAKWOOD: June 14, cence and spines pale yellowish; second, 1930, T. H. Frison., 1 9. 2.42, uniformly yellowish; third, 0.91, yellowish; fourth, 1.57, yellowish. Pronotum, Phytocoris venustus Knight length 0.70, width at base 1.00; deep red, becoming almost black at anterior angles Phytocoris venustus Knight (1923d, p. 651). of disk; calli fuscous and red with almost MALE.-Length 4.50, width 1.60. Head colorless ray or spots behind each callus, width 0.86, vertex 0.28; head orange colored basal margin with a slender, light colored above; spot on either side of vertex and one area except at basal angles; propleura deep at base, two spots on median line of front, red, lower margins and xyphus pallid; and base of tylus, light colored; lower half clothed with yellowish to dusky pubescence; of head pallid; base of juga, dorsal margin disk also with yellowish, silky pubescence. of lora, and irregular band across middle Scutellum red, basal angles and apex pallid; of tylus, bright red. Rostrum, length 2.00, vague, light colored, median line present. reaching sixth abdominal sternite, yellow- Sternum and pleura dark red, ostiolar peri- ish, black at apex. Antennae, first segment, treme, and ventral margin of epimera, white. length 0.97, pale yellowish, darker at apex, Hemelytra red, with many irregular, small setae pale; second, 0.80, uniformly yellow- to medium-sized spots; cuneus with pale ish; third, 1.34, yellowish; fourth, 1.16, yel- spots on inner margin and across middle; lowish. Pronotum, length 0.68, width at hemelytra clothed with yellowish to dusky base, 1.37; pale, with two orange stripes pubescence, intermixed with yellowish, silky behind either callus, outer stripe continued pubescence which may be white over light around callus and extending to anterior spots. Membrane uniformly pale smoky, angle and collar; small orange spot before veins red. Legs pallid to yellowish; anterior callus; collar orange red; propleura with femora reddish yellow at apices; tibiae with red ray crossing lower half of coxal cleft, annulations; hind femora red, pallid at but not extending to posterior margin.; bases, with rather numerous, small, pallid clothed with moderately prominent, yellow- spots although at times these spots nearly ish pubescence, this more prominent laterally obsolete; hind tibiae with small red marks and on scutellum and clavus. Scutellum near bases; tips of tarsi fuscous. Venter orange red to deep red; basal angles and me- white, beneath, latero-dorsal margin deep dian line more or less pale. Sternum and red; each sternite with small spot of red pleura pallid, red areas on mesosternum and laterally; eighth segment and base of genital metepisternum; ostiolar peritreme white. segment dark fusco-reddish. Genital clasp- Hemelytra yellow, with clavus and basal ers and flagellum distinctive, fig. 179. half of corium and embolium red, but with FEMALE.-Length 5.50, width 2.03. Head many, pale yellowish spots, these spots form- width 0.90, vertex 0.34. Antennae, first seg- ing a large triangular area before cuneus; ment, length 1.25; second, 3.16; third, 1.51; embolium sometimes with small red flecks fourth, 1.30. Pronotum, length 0.86, width on apical half; cuneus, and part of corium at base 1.60. More robust than male, but extending beyond cuneal fracture, red; out- very similar in color and pubescence. er margin of cuneus with four yellow spots, HABITs.-Collected on oak (Quercus these sometimes almost confluent.. Mem- sp.) and red birch (Betula nigra). brane smoky to pale fuscous, slightly paler KNOWN DISTRIBUTION.-Connecticut, on apical half, veins red, usually pale at District of Columbia, Illinois, Kansas, apices of areoles. Legs pale to yellowish, Maryland, Massachusetts, Mississippi, New fore femora with red flecks at apices; hind Jersey, New York, North Carolina, Ohio, femora with netlike, bright red markings, Pennsylvania. these somewhat broken at middle of apical Illinois Records. - ASHLEY: Aug. 7, half by a yellowish area; hind tibiae with 1917, 29. DOLSON: June 25, 1932, Rocky reddish spots near base. Venter yellowish, Branch, Frison & Mohr, 1 a. DUBOIS: Aug. with red flecks along dorsal margin; genital 8, 1917, 1 9. FAIRFIELD: June 12, 1934, De- claspers and flagellum distinctive for spe- Long & Ross, 1 a . GALENA: June 30, 1932, cies, fig. 179. on Quercus sp., Dozier & Mohr, 1 a. FEMALE.-Length 4.70, width 1.90; more GALESBURG: June 27, 1893, 1 S . HARRIS- robust than male, but very similar in color- September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS .207 ation. Head width 0.86, vertex 0.36. An- apices of areoles. Legs almost white to yel- tennae, first segment, length 1.04; second, lowish; apical halves of femora flecked with 2.47; third, 1.38; fourth, 1.17. Pronotum, bright red, larger spots on posterior pair; length 0.74, width at base 1.38. More robust tibial spines fuscous, hind pair with a small, than male, but very similar in color and reddish spot at base of each spine, although pubescence. these spots obscure apically; tips of tarsi KNOWN DISTRIBUTION.-Alabama, Con- dusky. Venter pale greenish yellow; genital necticut, District of Columbia, Illinois, claspers and flagellum distinctive for spe- Maryland, New York. cies, fig. 179. Illinois Record.-GALESBURG: July 24, FEMALE.-Length 5.20, width 1.90. Head

1892, 1 &, 6 9 . width 0.91, vertex 0.36. Antennae, first segment, length 1.21; second, 2.68; third, 1.51; Phytocoris caryae Knight fourth, 1.12. Pronotum, length 0.82, width at base 1.47. More robust than male, but Phytocoris caryae Knight (1923d, p. 652). very similar in color and pubescence. MALE.-Length 5.30, width 1.74. Head HOST PLANT.-Hickory (Carya sp.). yellow, width 0.93, vertex 0.28; small spot KNOWN DISTRIBUTION. - Illinois and at dorsal margin of each eye, irregular. New York. large spot on either side of front, and spot Illinois Records. - DuBois: Aug. 8, on dorsal margin of lora, orange colored; 1917, 1 a . GALESBURG: June 24, 1892, 1 9; front and vertex bearing prominent, pale July 29, 1892, 1 a, 4 9. MONTICELLO: June hairs. Rostrum, length .2.20, reaching fifth 28, 1914, Sangamon River, 1 S, 1 9. SA- abdominal segment; pale yellowish, very VANNA: July 23, 1892, McElfresh, 1 . dark brown at apex. Antennae, first segment, length 1.14, yellow, anterior aspect Phytocoris puella Reuter with small orange spots, largest one located near apex, setae pale to dusky; second, 2.46, Phytocoris puella Reuter (1876, p. 69). uniformly pale yellow; third, 1.50, yellow; FEMALE.-Length 4.90, width 1.90. Head fourth, 1.16, yellow, dusky at apex. Prono- width 0.86, vertex 0.36; head pale, with tum, length 0.81, width at base 1.44; green- mark on either side of collum extending upon ish yellow, with four orange stripes on disk, collar; irregular arc either side of front, these sometimes joining at base; calli pallid, base of lora and dorsal half of bucculae, collar with broad orange spot located on orange colored. Rostrum, length 2.26, ex- either side of median line, these spots extending to fifth ventral segment, pale, black tending posteriorly to calli; propleura with at apex. Antennae, first segment, length small orange ray behind lower half of coxal 1.26, pallid, indistinctly dotted with orange cleft; clothed with pale yellowish pubescence, on anterior aspect; second, 2.80, pale yel- a few dusky hairs at basal margin. Scutellum lowish; third, 1.49, yellowish; fourth, 1.28, greenish yellow, an oblique orange mark on yellowish to dusky. Pronotum, length 0.78, either side of median line. Sternum and width at base 1.40; pale, disk with four pleura pale yellowish. Hemelytra pale to orange stripes, paler forms with stripes greenish yellow, mottled with brown orange; broken at middle; anterior angles with darker on clavus, with many large, irregu- orange stripe which extends. upon collar; lar greenish yellow spots; apical one-fifth propleura with orange ray crossing lower of corium nearly uniformly greenish yel- half of coxal cleft and extending nearly to low; embolium with a few scattering red posterior margin. Scutellum pale, with an orange spots; tip of clavus with a dusky spot oblique orange vitta on either side of apical and beset with prominent black hairs; cu- half. Hemelytra pale, with rather uniform neus yellowish and translucent, apex and orange, netlike markings; cuneus partly margins flecked with reddish; a prominent, red; hemelytra clothed with pale yellowish dull reddish spot at margin between corium pubescence intermixed with prominent, and membrane; clothed with yellow pu- white, silky pubescence. Membrane pale, bescence, this darker near apex of corium; areoles infuscated and marbled within apical emboliar margins very slightly arcuate. half, veins yellowish, pale at apex of areoles. Membrane nearly colorless, with pale fus- Legs pallid, front tibiae with two nearly cous marbling, coloring darkest within are- obsolete, orange yellow bands; hind femora oles and at middle; veins dusky yellow at with red, netlike marks on apical half, di- 208 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Jrt..1 vided at middle of apical half by pallid an- median line and behind eye orange colored; nulus, fuscous hairs arising from red marks. clothed with pale yellowish pubescence, this Venter pallid, tinged with red near each fuscous near basal margin and sparsely in- spiracle. termixed with pale, silky pubescence; pro- MALE.-Length 4.80, width 1.51. Head pleura with red mark crossing lower half width 0.85, vertex 0.21. Antennae, first of coxal cleft, this mark diffused behind cleft. segment, length 1.21; second, 2.81; third, Scutellum pallid, with orange mark either 1.56; fourth, 1.21. Pronotum, length 0.73, side of median line extending obliquely to width at base 1.25. Dorsum uniformly lateral margin. Sternum pallid, episternum bright red, sometimes dotted with yellowish with red mark, epimeron chiefly red, ostiolar spots; calli pale; basal angles of pronotum peritreme white, area just above reddish. and apex of scutellum yellowish to pale Hemelytra with irregular, red, netlike orange. Membrane pale smoky or nearly markings, these produced by thickly placed clear; areoles with rather fine, obscure, pale and more or less confluent pale spots; basal fuscous marks. Legs yellowish; apical half half of corium nearly fusco-reddish; tip of of hind femora with red, netlike markings clavus, and spot near inner basal angle of and bearing fuscous to black hairs; a yellow- cuneus, black with prominent black hairs; ish subapical band present; in this last re- clothed with golden yellow pubescence; cen- spect very similar to female. Genital clasp- tral area with a few small spots of dense, ers, fig. 179. The sexes of puella exhibit a silvery wool; cuneus bright red and with greater difference in color than do other, many rather small, pallid spots. Membrane closely related species of this group. pale fuscous; areoles and central area with HARITs.-Collected on oak (Quercus clear spots; veins pale to fuscous. Legs pale sp.) and red birch (Betula nigra). to yellowish; apical two-thirds of hind fem- KNOWN DISTRIBUTION.-Connecticut, ora dark red, with many large and small District of Columbia, Illinois, Maryland, pallid spots, and an irregular, incomplete, Massachusetts, Michigan, Mississippi, New pallid band at middle of apical half; a few Jersey, New York, North Carolina, Ohio, black hairs arising from red area; spines Pennsylvania. on hind tibiae pallid, with reddish spot at Illinois Records.-Eleven males and 20 base of each, except those spines at apex. females, taken June 12 to October, are from Venter pale yellowish, with reddish dots on Anna, Ashley, De Soto, Dubois, Galena, sides; base of genital segment fuscous; Galesburg, Geff, Grand Detour, Harris- genital claspers and flagellum distinctive for burg, Makanda, Marshall, Oregon, Palos species, fig. 179. Park, Starved Rock State Park, Urbana, FEMALE.-Length 5.10, width 1.77. Head White Pines Forest State Park. Blatchley width 0.86, vertex 0.39. Antennae, first seg- (1926b, p. 729) records this species from ment, length 1.04; second, 2.55; third, 1.21; Beverly Hills. fourth, 1.04. Pronotum, length 0.85, width at base 1.55. Larger and more robust than Phytocoris depictus Knight male, but very similar in coloration, although dorsum and membrane frequently Phytocoris depictus Knight (1923d, p. 654). with broader, light-colored areas. MALE.-Length 4.10, width 1.50. Head HOST PLANT.-Bur oak (Quercus macro- width 0.78, vertex 0.27; head marked with carpa) and red oak (Q. rubra). orange and red as in puella Reuter. Ros- KNOWN DISTRIBUTION.-District of Co- trum, length 1.93, reaching fifth abdominal lumbia, Illinois, Minnesota, New York, sternite, yellowish, black at apex. Antennae, Ohio. first segment, length 0.83, thickest near base Illinois Records.-BEVERLY HILLS: Aug. and tapering to become more slender just 31, 1907, W. J. Gerhard, 2 9, FM. CARY: before apex, yellowish, with a few red dots Aug. 27, 1905, W. J. Gerhard, 2 9, FM. on anterior aspect and with seven or eight FAIRFIELD: June 12, 1934, DeLong & Ross, fuscous setae on basal half of dorsal aspect; 1 S. GIBSONIA: Oct. 2, 1934, Frison & second, 1.97, uniformly pale yellowish; third, Ross, I . GOLCONDA: June 22, 1932, on 0.96, yellowish; fourth, 0.97, yellowish. Pro- oak, Ross, Dozier & Park, 1 . KEITHS- notum, length 0.71; width at base 1.23; pale BURG: June 15, 1932, on red oak, H. L. Do- testaceous and dusky; calli lighter; disk with zier, 1 S. SHAWNEETOWN: June 23, 1936, four orange stripes; collar either side of DeLong & Ross, I S. September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 209

Phytocoris luteolus Knight KNowNg DISTmIBUTION.-District of Co- lumbia, Illinois, Indiana, Iowa, Maryland, Phytocoris luteolus Knight (1923d, p. 649). Mississippi, Missouri, New Jersey, New Known only from Alabama and Connec- York, Pennsylvania, Texas, Virginia. ticut; not taken in Illinois. Illinois Records.-CoLLINsvILLE: Aug. 14, 1899, McElfresh, 1 9. DANVILLE: June MYRMECORINI 16, 1930, Frison & Hottes, 1 Q. DuBoIs: KEY TO GENERA Length of first antennal segment greater than width of head; scutellum not conically produced, fig. 180; dorsum with fine, short pubescence...... Paraxenetus, p. 209 Length of first antennal segment much less than width of head, only slightly greater than width of vertex; scutellum conically produced, fig. 181; dorsum, especially pronotum and scutellum, with long, erect hairs...... Barberiella, p. 209 Paraxenetus Reuter Paraxenetus guttulatus (Uhler) Eucerocoris guttulatus Uhler (1887d, p. 150). MALE.-Fig. 180. Length 6.40, width at base of cuneus, 1.33. Head width 1.00, vertex 0.27; sulcus on median line of -vertex. Rostrum, length 2.42, extending slightly beyond posterior coxae or to second abdominal sternite. Antennae, first segment, length 1.46; second, 3.45; third, 2.85; fourth, 0.86; all segments slender, of nearly equal thickness, three basal ones yellowish to dusky brown, last segment reddish brown. Prono- Fig. 180.-Paraxenetus guttulatus, dc. tum, length 0.95, width at base 1.34. Em- boliar margins strongly sulcate, or medially July 3, 1909, 1 e. GRAFTON: July 20, 1932, coarctate. General color fusco-grayish, on Juglans nigra, Ross & Dozier, 1 S. HA- tinged with fulvous, sometimes fulvous areas VANA: Aug. 15, 1907, Devil's Hole, 2 e. broad; cuneus, veins of membrane, and HEROD: Jully 24, 1930, Knight & Ross, 1 !. calli, fulvous to reddish; femora frequently QUINcY: Aug. 8, 1889, 3 J ; Aug. 11, 1889, fusco-reddish. Body clothed with recum- 1e. bent, fine yellowish pubescence, femora rather sparsely set with long pilose hairs, Barberiea Poppius these hairs longest on posterior pair. FEMALE.-Length 6.80, width 1.51. Head 'Barberiella apicalis Knight width 1.08, vertex 0.39. Antennae, first segment, length 1.51; second, 3.30; third, 2.94; Barberiella apicalis Knight (1923d, p. 657). fourth,. 0.86 Pronotum, length 1.08, width This species, fig. 181, is more closely re- at base 1.56. Very similar to male in form lated to Fiebrigiella silvestri Poppius, de- and coloration. scribed from Brazil, than to Barberiella HOST PLANT.-Grape vines (Vitis sp.); formicoides Poppius, but differs from the one specimen collected in Illinois on walnut former, at least, in the longer first antennal (Julans nigra). segment and in the shining, brownish and 210 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Art. I translucent apical area of the corium and above ostiole. Hemelytra with emboliar embolium. The members of this genus are margins strongly constricted at middle, disk good ant mimics, and in their general aspect nearly flat; cuneus strongly declivitous; are very suggestive of the large species of clothed with moderately sparse, golden yel- Pilophorus. low pubescence interspersed with more MALE.-Length 5.00, width 1.60. Head nearly erect fine hairs, these more prominent width 1.14, vertex 0.43; head almost verti- on clavus; clavus dull fusco-brownish, a tri- cal; vertex and base of front distinctly im- angular pruinose field extending upon mid- pressed along median line but not grooved; dle from corium; corium fuscous on basal head very dark brown, clothed with pale half; a transverse pallid spot at middle; pubescence, this more prominent on front. behind this a dark fusco-brownish area ex- Rostrum, length 1.99, reaching bases of hind tending as far as a line drawn transversely coxae, dark brown. Antennae, first segment, through tip of clavus; apical area chiefly

Fig. 181.-Barberiella apicalis, 9. length 0.52, dark brown, with fine and pale brownish, somewhat translucent and dense pubescence and with two or three shining, pruinose bordering the transverse larger, erect hairs near apex, length of these dark band; cuneus uniformly brownish and less than thickness of segment; second, 2.03, translucent; membrane uniformly fusco- cylindrical, slightly thicker than first seg- brownish, veins slightly darker. Legs uni- ment, more slender near base, dark brown, formly dark brown, hind coxae with a pale with fine, dense pubescence; third, 1.11, or yellowish, opaque spot at antero-lateral slender, dark brown; fourth, 0.68, dark angle; femora with coarse, leathery surface, brown. Pronotum, length 1.24, width at base sparsely clothed with erect, pale hairs; hind 1.59; anterior angles 0.84, anterior one-third tibiae compressed, strongly curved, beset nearly cylindrical to a point just behind with yellow, spinelike hairs; tarsi fuscous, calli, from thence flaring to posterior mar- brownish at base. Venter black with a tinge gin, but margin nearly a straight line; disk of brown, moderately shining; strongly con- strongly convex; calli much reduced and stricted at base, a pale mark on side just with two impressed points between; very beneath that of corium; venter sparsely set dark brown, darker anteriorly; surface with erect, pale hairs. leathery with pale pubescence and sparsely FEMALE.-Length 5.50, width before base interspersed with erect, pilose hairs. Scutel- of cuneus 1.59. Very similar to male in lum conically produced; point bent over and form and coloration; abdomen broader at directed to the rear, fig. 181; sparsely set apex. Head width 1.32, vertex 0.58. Anten- with long, pilose hairs; much of mesoscutum nae, first segment, length 0.54; second, 2.10, exposed, sloping downward to base of scu- slender on basal half, clavate at apex (0.11 tellum from which it is not distinctly sep- thick), exceeding thickness of first segment. arated; dark brown, moderately shining. KNOWN DISTRIBUTION.-Illinois, Missis- Sternum and pleura dark brown; posterior sippi, New York, North Carolina. half of epimeron white; ostiolar peritreme Illinois Record.-SHAWNEETOWN: June dark brown, with a protuberant point just 27, 1936, DeLong & Mohr, 1 9'. HOST LIST Most species of Miridae are restricted to a dacious, at least in part, but are associated with single host plant or to a few closely related plants. definite plants; these are indicated by a dagger (f). Notable exceptions include the tarnished plant Still other species have been collected on particular bug, Lygus oblineatus (Say), which may be found species of plants in sufficient numbers to make it on almost any plant, and Plagiognathus politus probable that those plants are the food plants of Uhler, which occurs on a great many herbaceous the mirids, but the exact relationship existing plants. Both are so common and so diverse in between the mirids and the plants under which their feeding habits that, to prevent repetition, they are listed has not been demonstrated. Such neither is included under .the various hosts in the species are indicated by a double dagger (Q). In following list. A number of mirids are predacious, species of Miridae not indicated by asterisk or but are associated with definite species of plants; dagger, the host relationship of the mirid and the in this list such mirids are indicated by an asterisk plant species under which it is listed has been (*). Other species are possibly or probably pre- definitely established. Acer negundo Psallus alnicola Douglas and Scott, 44 tParacalocoris scrupeus (Say), 177 Psallusfuscatus Knight, 44 Plagiognasthus negundinis Knight, 33 Alnus sp. Acer rubrum tDeraeocoris borealis (Van Duzee), 71 Cocobaphes sanguinareus Uhler, 138 tDiaphnidia pellucida Uhler, 92 Neolygus vitticol/is (Reuter), 162 tPlagiognathus similis Knight, 37 Acer saccharinum A/thaea rosea Neolygus viaicollis (Reuter), 162 Melanotrichus althaeae (Hussey), 96 Acer saccharum Ambrosia trifida Coccobaphes sanguinareus Uhler, 139 Lygus plagiatus Uhler, 153 Microphylellus elongatus Knight, 42 Ambrosia sp. Neolygus hirticulus (Van Duzee), 163 Chlamydatus associatus (Uhler), 25 Neolygus viticollis (Reuter), 162 Chlamydatus suavis (Reuter), 26 tPhytocoris corticevivens (Knight), 186 Ilnacora malina (Uhler), 83 Acer spicatum tPlagiognathus blatchleyi Reuter, 35 Neolygus beffragii (Reuter), 162 Plagiognathus nigronitens Knight, 30 Acer sp. Plagiognathus politus Uhler, 29 *Deraeocoris nebulosws (Uhler), 67 Reuteroscopus ornatus (Reuter), 48 tDiaphnidia pellucida Uhler, 92 Reuteroscopus sulphureus (Reuter), 49 *Phytocoris conspurcatus Knight, 188 Amorpha canescens Achlillea millefolium Lopidea instabilis (Reuter), 91 Lopidea heidemanni Knight, 88 Psallus amorphae Knight, 44 Achillea sp. Amorphafruticosa tAdelphocoris rapidus (Say), 174 Lopidea amorphae Knight, 90 Agropyron repens Psallus amorphae Knight, 44 Capsus ater (Linnaeus), 138 Anthemis cotula Alder; see Alnus Polymerus basalis (Reuter), 167 Alder, smooth; see Alnus rugosa Apium graveolens Alder, speckled; see Alnus incana Lygus campestris (Linnaeus), 154 Alfalfa; see Medicago saliva Apple; see Pyrus malus Aiium canadense Arbor vitae; see Thuja occidentalis Labopidea allii Knight, 105 Arrow-wood; see Viburnum Allium cepa Artemisia canadensis Labopidea ainsliei Knight, 105 Lygus atritibialis Knight, 152 Labopidea a/liu Knight, 105 Psallus bakeri (Bergroth), 45 Alium cernuum Jrtemisia sp. Labopidea ainsliei Knight, 105 Psallus bakeri (Bergroth), 45 Labopidea aii Knight, 105 Artichoke; -see Helianthus tuberosus Alnus incana Arundinaria tecta tDeraeocoris alnicola Knight, 70 *Phytocoris arundinicola Knight, 198 Neolygus a/ni Knight, 157 Asclepias sp. Alnus rugosa t1lnacora divisa Reuter, 83 *Ceratocapsus deurvatus Knight, 116 Macrolophus brevicornis Knight, 55 Ceratocapsus incisus Knight, 113 Ash; see Fraxinus Ceratocapsus modestus (Uhler), 111 Ash, black; see Fraxinus nigra *Deraeocoris poecilus (McAtee), 67 Ash, red; see Fraxinus pennsy/vanica Neolygus clavigenitalis Knight, 163 Ash, white; see Fraxinus americana Aspen, American; see Populus tremuloia *Mirid predacious, but associated with the plant under which it is listed. Aspidium spinulosum tMirid possibly or probably predacious, but associated Mona/ocorisfilicis (Linnaeus), 58 with the plant under which it is listed. Aster, golden; see Chrysopsis .Mirid probably associated with the plant under which it is listed, but exact relationship of plant and mind not Aster macrophyllus demonstrated. Microphylellus nigricornis Knight, 41 [ 211] 212 ILLINOIS NATURAL HISTORY SURvEY BULLETIN Vol. 22, Art. 1

Aster, New England; see Aster novae-angliae Reuteriafuscicornis Knight, 94 Aster novae-angliae Carya illinoensis Macrotylus amoenus Reuter, 51 Neolygus caryae Knight, 161 Aster, prairie; see Aster sericeus Orthotylus ramus Knight, 100 A4ster sericeus tPhytocoris albifacies Knight, 186 Psallus astericola Knight, 45 Plagiognathus caryae Knight, 38 Aster umbellatus Carya ovata Polymerus opacus Knight, 170 Neolygus caryae Knight, 161 Aster undulatus $Neo/ygus querca/bae Knight, 160 Macrotylus sexguttatus (Provancher), 51 Plagiognathus caryae Knight, 38 Aster sp. Carya sp. Dicyphus discrepans Knight, 54 Ceratocapsus fasciatus (Uhler), 109 Plagiognathis cuneatus Knight, 34 tCeratocapsus nigellus Knight, 111 Avena sativa tDeraeocoris grandis (Uhler), 71 Trigonotylus ruficornis (Geolftoy), 130 tEustictus venatorius Van Duzee, 66 Balm of Gilead; see Populus candicans .tMicrophylellus modestus Reuter, 41 Basswood; see Tilia americana Orthotylus ramus Knight, 100 Bean; see Phaseolus tParacalocoris scrupeus (Say), 177 Bedstraw; see Galium aparine Phytocoris caryae Knight, 207 Bedstraw, northern; see Galium boreale Phytocoris infuscatus Reuter, 204 Beech; see Fagus Phytocoris onustus Van Duzee, 194 Beech, blue; see Carpinus caroliniana Plagiognathus dispar Knight, 39 Beech, water; see Carpinus caroliniana tPlagiognathus politus Uhler, 29 Beet, cultivated; see Beta vulgaris Castanea sp. Beet, sugar; see Beta vulgaris Neolygus hirticulus (Van Duzee), 63 Beta vulgaris Neolygus omnivagus Knight, 163 $Chlamydatus associatus (Uhler), 25 Caulophyllum thalictroides Betula lutea Horcias dislocatus (Say), 173 tDeraeocoris betulae Knight, 70 Cedar, red; see 7uniperus virginiana Neolygusfagi Knight, 161 Celery; see Apium graveolens Orthotylus necopinus Van Duzee, 103 Celtis occidentalis Betula nigra Paracalocoris celtidis Knight, 179 ICeratocapsus pumilus (Uhler), 112 Cephalanthus ocidentalis *Deraeocoris poecilus (McAtee), 67 Neuroco/pus nubilus (Say), 182 tLopidea media (Say), 89 *Phytocoris canadensis Van Duzee, 193 tPhytocoris confluens Reuter, 205 Chenopodium album jPhytocoris puella Reuter, 207 Melanotrichus flavosparsus (Sahlberg), 96 tPlagiognathus atricornis Knight, 35 lReuteroscopus ornatus (Reuter), 48 Plagiognathus similis Knight, 37 tReuteroscopus sulphureus (Reuter), 49 Betula pumila Chestnut; see Castanea Psallus parshleyi Knight, 44 Chrysanthemum leucanthemum Betula sp. Plagiognathus chrysanthemi (Wolff), 31 tPlagiognathus politus Uhler, 29 Chrysanthemum sp. Birch; see Betula tLopidea confluenta (Say), 87 Birch, red; see Betula nigra tPolymerus basalis (Reuter), 167 Birch, yellow; see Betula lutea JPsallus seriatus (Reuter), 45 Blackberry; see Rubus Chrysopsis villosa Bladder nut, American; see Staphylea trifolia Polymerus chrysopsis Knight, 171 Bluegrass; see Poa pratensis Clematis uirginiana Bluegrass, Canada; see Poa compressa Ha/ticus intermedius Uhler, 77 Box elder; see Acer negundo Clover; see Trifolium, Melilotus Brassica nigra Clover, prairie; see Petalostemum purpureum Campylomma verbasci (Meyer), 25 Clover, red; see Trifolium pratense Bromus inermis Clover, sweet; see Melilotus Capsus simulans (Stil), 138 Clover, white; see Trifolium repens Burning bush; see Evonymus atropurpureus Cocklebur; see Xanthium Butternut; see Juglans cinerea Coltsfoot; see Tussilago farfara Buttonbush; see Cephalanthus occidenta/is Conium maculatum Calamagrostis canadensis Lygus campestris (Linnaeus), 154 Collaria meilleurii Provancher, 126 Coralberry; see Symphoricarpos orbiculatus Cane, switch; see Arundinaria tecta Coreopsis sp. Carex vesicaria $Polymerus basa/is (Reuter), 167 Teratocoris paludum J. Sahlberg, 128 Cornus alternifolia Carex sp. Neolygus communis Knight, 159 Teratocoris discolor Uhler, 128 Cornus amomum Carpinus caroliniana Plagiognathus cornicola Knight, 38 Ceratocapsus incisus Knight, 113 Cornus paniculata Neolygus carpini, Knight, 164 Neolygus communis Knight, 159 Neolygusjohnsoni Knight, 162 Cornus stolonifera *Phytocoris'canadensis Van Duzee, 193 Neolygus communis Knight, 159 *Phytocoris erectus Van Duzee, 199 Cornus stricta tPhytocoris lacunosus Knight, 197 Plagiognathus cornicola Knight, 38 September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 213

Cornus sp. Figwort, see Scrophularia leporella Neolygus omnivagus Knight, 163 Fleabane; see Erigeron :Paracalocoris scrupeus (Say), 177 Foxglove, false; see Gerardia pedicularia Corylus americana Fraxinus americana Microphykllus longirostris Knight, 42 Neoborus amoenus (Reuter), 140 lMicrophylellus modestus Reuter, 41 Neoborus canadensis (Van Duzee), 141 Corylus sp. Neoborus geminus (Say), 140 lCeratocapsus pilosulus Knight, 109 Neoborus glaber Knight, 140 tLopidea media (Say), 89 Neoborus palmeri Reuter, 141 lPlagiognathus politus Uhler, 29 Neoborus pubescens Knight, 141 Cotton; see Gossypium her/aceum Neoborus rufusculus Knight, 143 Cottonwood; see Populus Neoborus vittiscutis Knight, 143 Crabapple; see Pyrus coronaria Tropidostep/es cardinalis Uhler, 139 Cranberry; see Pacinium Xenoborus pettiti (Reuter), 145 Crataegus mof/is Fraxinus nigra tMicrophykllus modestus Reuter, 41 Xenoborus commissuralis Reuter, 144 Crataegus punctata Xenoborus neg/ectus Knight, 144 Orhotylyus serus Van Duzee, 102 Xenoborus plagifer (Reuter), 144 Crataegus tomentosa Fraxinus pennsy/vanica Orthotlus serus Van Duzee, 102 Neoborus amoenus (Reuter), 140 Crataegus sp. Fraxinus sp. *Deraeocorisfasciolus Knight, 70 tLopidea media (Say), 89 tDeraeocoris quercicola Knight, 71 Neoborus spp., 139 Diaphnidia pellucida Uhler, 92 Neolygus hirticulus (Van Duzee), 163 Heterocordy/us malinus Reuter, 107 JP/agiognathus dispar Knight, 39 Lygidea mendax Reuter, 146 Pseudoxenetus scutellatus (Uhler), 118 Neolygus univittatus Knight, 160 Xenoborus spp., 143 Paracalocoris pallidulus McAtee, 178 Gale, sweet; see Myrica gale Paracalocoris scrupeus (Say), 177 Galium aparine Plagiognathus dispar Knight, 39 Criocoris saliens (Reuter), 49 Croton capita/us .tLopidea heidemanni Knight, 88 Psallus seriatus (Reuter), 45 Polymerus proximus Knight, 168 Croton texensis Galium boreale Psallus seriatus (Reuter), 45 Polymerus unifasciatus (Fabricius), 167 Croton sp. Garlic, wild; see /lium canadense Psallus seria/us (Reuter), 45 Geranium maculatum Cudweed; see Gnaphalium uliginosum Horcias dislocatus (Say), 173 Cup plant; see Silphium perfoliatum Gerardia pedicularia Currant; see Ribes Macrolophus separatus (Uhler), 55 Cydonia ob/onga Gleditsia triacanthos Lygidea mendax Reuter, 146 tLopidea heidemanni Knight, 88 Cynodon dactylon Lopidea incurua Knight, 88 Trigonotylus brevipes Jakovlev, 129 Neolygus tincius Knight, 157 Cypress, bald; see Taxodium distichum Paracalocoris gleditsiae Knight, 180 Dactylis glomerata Pilophorus walshii Uhler, 123 Stenotus binotatus (Fabricius), 175 Plagiognathus delicatus (Uhler), 37 Daisy; see Chrysanthemum Plagiognathus gleditsiae Knight, 37 Daisy, oxeye; see Chrysanthemum leucanthemum Gnaphalium uliginosum Dock, see Rumex Melanotrichus catulus (Van Duzee), 97 Dog fennel; see dnthemis cotula Goldenrod; see So/idago Dogwood; see Cornus Gooseberry; see Ribes Elder; see Sambucus Gooseberry, prickly; see Ribes cynosbati Elm; see Ulmus Goosegrass; see Galium aparine Elm, American; see Ulmus americana Gossypium herbaceum Erigeron canadensis Lygus hesperus Knight, 151 Lygus apicalis Fieber, 154 Psallus seriatus (Reuter), 46 Erigeron sp. Grape; see Vitis tLygus plagiatus Uhler, 153 Grape, muscadine; see Vitis rotundifolia Euphorbia adenoptera Grass, Bermuda; see Cynodon dactylon Semium hirtum Reuter, 75 Grass, bluejoint; see Calamagrostis canadensis Euphorbia humistra/a Grass, brome; see Bromus inermis Semium hirtum Reuter, 75 Grass, couch; see Agropyron repens Evonymus atropurpureus Grass, orchard; see Dac/ylis glomerata Paracalocoris evonymi Knight, 178 Grass, panic; see Panicum huachucae Fagus grandifolia Grass, quack; see A1gropyron repens Neolygusfagi Knight, 161 Grass, slough; see Spart/na michauxiana Fagus sp. Grasses (undifferentiated) Neolygus hirticulus (Van Duzee), 163 Capsus ater (Linnaeus), 138 Fern, cinnamon; see Osmunda cinnamonca Collaria meilleurii Provancher, 126 Fern, shield, see Aspidium spinulosum Co//aria ocula/a (Reuter), 127 Ferns (undifferentiated) Miris do/abratus (Linnaeus), 127 Ceratocapsus se/osus Reuter, 115 Stenodema trispinosum Reuter, 130 214 ILLINOIS NATURAL HI STORY SURVEY BULLETIN Vol. 22, Art. I

Stenodema vicinum (Provancher), 130 Locust, black; see Robinia pseudoacacia Trigonotylus ruficornis (Geoffroy), 130 Locust, honey; see Gleditsia triacanthos Gum, black; see Nyssa sylvatica Loosestrife; see Lysimachia quadrifolia Gum, sour; see Nyssa Lycopersicon esculentum Gymnocladus dioica Cyrtopeltis varians (Distant), 53 tNeuroco/pus nubilus (Say), 182 Lysimachia quadrifolia Hackberry; see Celtis occidentalis Polymerus punctipes Knight, 169 Hamamelis virginiana Mallow; see Malva rotundifolia Diaphnidia capitata Van Duzee, 92 Malva rotundifolia Lopidea reuteri Knight, 91 Melanotrichus althaeae (Hlussey), 96 Hamulus japonicus Maple; see A.cer Paracalocoris hawleyi Knight, 178 Maple, mountain; see Acer spicatum Hawthorn; see Crataegus Maple, red; see Acer rubrum Hazelnut; see Corylus Maple, silver; see Acer saccharinum Helianthus tuberosus Maple, sugar; see Acer saccharum Ilnacora stalii Reuter, 84 Meadow-sweet; see Spiraea sa/icifolia tPolymerus basalis (Reuter), 167 Medicago sativa Helianthus sp. Adelphocoris lineolatus (Goeze), 175 Ilnacora stalii Reuter, 84 Lygus elisus Van Duzee, 152 tMelanotrichus flavosparsus (Sahlberg), 96 Lygus hesperus Knight, 151 Plagiognathus nigronitens Knight, 30 Melilotus sp. Hemlock; see Tsuga canadensis Adelphocoris lineolatus (Goeze), 175 Hemlock, poison; see Conium maculatum Adelphocoris rapidus (Say), 174 Heracleum lanatum Milkweed; see Asclepias sp. tLygus campestris (Linnaeus), 154 Mint, horse; see Monarda punctata Hickory; see Carya Mint, mountain; see Pycnanthemum sp. Hollyhock; see A/thaea rosea Monarda punctata Hop tree; see Ptelea trifoliata tPsallus seriatus (Reuter), 45 Hops; see IIamulusjaponicus Mullein; see Verbascum Hornbeam, American; see Carpinus caroliniana Mustard, black; see Brassica nigra Hornbeam, hop; see Ostrya virginiana Myrica gale Horseweed; see Ambrosia trifida Plagiognathus flavicornis Knight, 30 Ilex verticillata Nannyberry, see Viburnum lentago Neolygus communis Knight, 159 Nyssa sylvatica Impatiens biflora Lepidopsallus nyssae Johnston, 48 Lygus pabulinus (Linnaeus), 153 Nyssa sp. Indigo, false; see 4morphafruticosa Neolygus nyssae Knight, 164 7uglans cinerea Oak; see Quercus Plagiognathus albatus (Van Duzee), 36 Oak, blackjack; see Quercus marilandica Pl/'giognathus repletus Knight, 38 Oak, bur; see Quercus macrocarpa 7uglans nigra Oak, live; see Quercus virginiana ICeratocapsus uniformis Knight, 113 Oak, post; see Quercus stellata tDiaphnidia pellucida Uhler, 92 Oak, red; see Quercus rubra *Phytocoris conspurcatus Knight, 188 Oak, scarlet; see Quercus coccinea Plagiognathus albatus (Van Duzee), 36 Oak, white; see Quercus alba Plagiognathus punctatipes Knight, 39 Oak, yellow; see 9Quercus muhlenbergii Plagiognathus repletus Knight, 38 Oats; see Avena sativa 7/uncus dudleyi Onion, cultivated; see A/lium cepa Lopus decolor (Fallen), 51 Onion, wild; see A/lium cernuum .7uncus sp. Osmunda cinnamonea Lopus decolor (Fallen), 51 Monalocorisfilicis (Linnaeus), 58 Mimoceps insignis Uhler, 125 Ostrya virginiana Juniperus virginiana tCeratocapsus pilosulus Knight, 109 Dichrooscytus tinctipennis Knight, 165 Diaphnidia pellucida Uhler, 92 Dichrooscytus viridicans Knight, 165 Neolygus ostryae Knight, 164 Parthenicusjuniperi (Heidemann), 76 Reuteriafuscicornis Knight, 94 Phytocorisjunipericola Knight, 201 Panicum huachucae tPilophorus juniperi Knight, 123 Collaria ocu/ata (Reuter), 127 Kentucky coffee tree; see Gymnocladus dioica Papoose root; see Caulophyllum thalictroides Lamb's quarter; see Chenopodium album Parsnip; see Pastinaca sativa Larch; see Larix laricina Parsnip, cow; see Heracleum lanatum Larix laricina Pastinaca sativa tDeraeocoris laricicola Knight, 73 tLygus campestris (Linnaeus), 154 tPilophorus uhleri Knight, 122 Pea, hoary; see Tephrosia sp. Plagiognathus laricicola Knight, 39 Peach; see Prunus persica Lathyrus venosus Pear; see Pyrus communis Lopidea lathyri Knight, 91 Pecan; see Carya illinoensis Lead plant; see Amorpha canescens Petalostemum purpureum Leafcup; see Polymnia canadensis Lopidea minor Knight, 88 Linden; see Tilia americana Phaseolus sp. Locust; see Robinia pseudoacacia, Gleditsia tri- Halticus bracteatus (Say), 77 acanthos L,ygus elisus Van Duzee, 152 September, 1941 KNIGHT: PLANT BUGS, OR MIRIDAE, OF ILLINOIS 215

Lygus hesperus Knight, 151 Capsus afer (Linnaeus), 138 W0pisheuria clandestine Van Duzee, 131 Poa pretensis PhIcum pretense Miris dolabratus (Linnaeus), 127 Capsus ater (Linnaeus), 138 Polygonum muhlenbergii Miris dolabratus (Linnaeus), 127 tDeraeocoris histrio (Reuter), 69 Stenotus binotatus (Fabricius), 175 Polygonum sp. Phlox sp. tGarganusfusiformnis (Say), 181 tLopidea tonfluenta (Say), 87 tLygus plagiatus Uhler, 153 Lopidee davisi Knight, 87 Polymnia canedensis Pice excelsn Dicyphus gracilentus Parshley, 54 tPhytocoris buenoi Knight, 197 Lopidea confluenta (Say), 87 Picea mariana Macrolophus tenuicornis Blatchley, 56 Plagiognathus suffuscipennis Knight, 40 Plegiogneathus elbifacies Knight, 35 Picea sp. Polymnia uvedalia Psallus piceicola Knight, 44 Lopiden con/luenta (Say), 87 Pine; see Pinus Polymnia sp. Pine, Austrian; see Pinus nigra var. austriaea Macrolophus sepanatus (Uhler), 55 Pine, pitch; see Pinus rigida Poplar; see Populus Pine, red; see Pinus resinosa Poplar, balsam; see Populus balsamifera Pine, Scotch; see Pinus syluestris Populus balsamifera Pine, scrub; see Pinus virginiana Lopidea cuneata Van Duzee, 89 Pine, Virginia; see Pinus virginiana Orthotylus knighti Van Duzee, 102 Pine, white; see Pinus strobus Populus candicans Pine, yellow, see Pinus echinata Orthotylus knighti Van Duzee, 102 Pinus echinata Populus deltoides tEusticus fihicornis (Walker), 66 $Diaphnidia pellucida Uhler, 92 Pinus nigra var. austriaca Lopidee cuneaet Van Duzee, 89 Alepidie graeilis (Uhler), 119 Neolygus hirticulus (Van Duzee), 163 Pinus resinosa tNeurocolpus nubilus (Say), 182 XAlpidia gracilis (Uhler), 119 Populus tremuloides Dichrooscytus suspectus Reuter, 166 jfEustictus necopinus Knight, 66 Phytocoris pinicole Knight, 201 Orthotylus candidatus Van Duzee, 102 *Pilophorus vanduzeei Knight, 120 Populus sp. Pinus rigide Neoborus populi Knight, 142 Phytocoris uniformis Knight, 201 Potato; see Solanum tuberosum Pinus strobus Prunus persica tDeraeocoris nubilus Knight, 69 Neolygus caryae Knight, 162 *JDeraeocoris pinicola Knight, 73 tNeolygus fuercalbee Knight, 160- Phytocoris diversus Knight, 200 Psedera quinquefolia Phytocorisfulvus Knight, 201 Paracalocoris castus McAtee, 178 tPilophorus strobicola Knight, 122 Psedera sp. Pletylygus luridus (Reuter), 147 Neolygus hirticulus (Van Duzee), 163 Psallus strobicola Knight, 45 Pielea trtifoliata Pinus sylvestris tParacalocoris scrupeus (Say), 177 Alepidie gracilis (Uhler), 119 Pycnanthemum sp. Dichrooscytus rufipennis (Fallen), 166 tPhytocoris tibialis Reuter, 205 Phytocoris pinicola Knight, 201 Pyrus communis tPilophorus strobicola Knight, 122 Neolygus communis Knight, 159 tPilophorus h/leri Knight, 122 *Phytocoris conspurcatus Knight, 188 *Pilophorus vanduzeei Knight, 120 Pyrus coronarie Pinus virginiana Lygidea mendax Reuter, 146 Alepidiella heidemanni Poppius, 119 Pyrus malus tDeraeocoris-nigritulus Knight, 73 Campylomma verbasci (Meyer), 25 Dichrooscytus suspectus Reuter, 166 *Deraeocorisfasciolus Knight, 70 Phytocoris conspersipes Reuter, 201 Diaphnidia pellucida Uhler, 92 Phytocoris mundus Reuter, 201 *Eurychilopterella luridula Reuter, 73 Pilophorus amoenus Uhler, 122 Heterocordylus malinus Reuter, 107 Pilophorus laetus Van Duzee, 121 Lygidea mendax Reuter, 146 Pinus sp. Paracalocoris pellidulus McAtee, 178 Deraeocoris albigulus Knight, 73 *Phytocoris; breviusculus Reuter, 190 tLargidea grossa Van Duzee, 63 *Phytocoris conspurcetus Knight, 188 Phytocoris angustifrons Knight, 201 *Phytocoris neglectus Knight, 194 Plantago aristete Plagiognathus politus Uhler, 29 tLepidopsaelus rubidus (Uhler), 47 Quercus alba tPolymerus basaeis (Reuter), 167 tDeraeocoris quercicola Knight, 71 Plantago lanceolata Diaphnidia provancheri (Burque), 92 Halticus bracteatus (Say), 77 Microphylellus maculipennis Knight, 41 Plantain; see Plantago aristate tMicrophyle//us modestus Reuter, 41 Platanus occidentalis Neolygus geneseensis Knight, 159 Plagiognathus albatus (Van Duzee), 36 Neolygus omnivagus Knight, 163 Reuteria platani Knight, 95 Neolygus quercalbae Knight, 160 Poa compressa Neolygus semivittatus Knight, 163 216 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22, Jrt. 1

4Peritropis husseyi Knight, 62 Sagebrush; see Jrtemisia Pseudoxenetus regalis (Uhler), 119 Salix amygdaloides Pseudoxenetlus scutellatus (Uhler), 119 *Ceratocapsusfuscinus Knight, 116 Quercus coccinea Lygidea salicis Knight, 146 Neolygus omnivagus Knight, 163 Lygus rubicundus (Fallen), 153 Quercus macrocarpa Salixfragilis tCeratocapsus pilosulus Knight, 109 Orthotlus modestus Van Duzee, 104 *Deraeocoris nebulosus (Uhler), 67 Or/hotylus ornatus Van Duzee, 103 tDeraeocoris quercicola Knight, 72 Salix longifolia tHyaliodes brevis Knight, 58 Lygidea rosacea Reuter, 145 Phytocoris depictus Knight, 208 Or/hotylus basicornis Knight, 102 Phytocoris quercicola Knight, 203 Paracalocoris salicis Knight, 177 tPhytocoris sulcalus Knight, 190 Phylocoris rubellus Knight, 202 Plagiognaihus nigrolineatus Knight, 35 Plagiognathusflavoscutella/us Knight, 32 Reuteria querci Knight, 95 Plagiognathus salicicola Knight, 36 Quercus marilandica Plagiognathus tinctus Knight, 31 tPseudoxenetus regalis (Uhler), 119 Salix nigra Quercus muhlenbergii *Ceralocapsusfuscinus Knight, 115 Pseudoxenetus scutellatus (Uhler), 118 Lopidea salicis Knight, 89 Quercus rubra Lygidea obscura Reuter, 145 Neolygus omnivagus Knight, 163 Orthotylus modestus Van Duzee, 104 Phytocoris depictus Knight, 208 Ortholylus negleclus Knight, 105 tPseudoxenetus regalis (Uhler), 119 Orthotylus viridis Van Duzee, 101 Pseudoxenetus scutellatus (Uhier), 118 *Phytocoris salicis Knight, 196 Quercus stellata Salix syrticola Lepidopsallus miniatus Knight, 48 Plagiognathus syrticolae Knight, 31 Neocapsus cuneatus Distant, 147 Sa/ix sp. Neolygus geneseensis Knight, 159 Ceratocapsus incisus Knight, 113 Quercus virginiana Ceratocapsus pumilus (Uhler), 112 Pseudoxenetus regalis (Uhler), 119 tDiaphnidia pellucida Uhler, 92 Quercus sp. tEustictus salicicola Knight, 66 Ceratocapsus modestus (Uhler), 111 Lepidopsallus rubidus (Uhler), 47 tDeraeocoris sayi (Reuter), 73 tLopidea heidemanni Knight, 88 :Diaphnidia pellucida Uhler, 92 tLopidea media (Say), 89 tPhytocoris confluens Reuter, 205 Lygus atritylus Knight, 157 tPhytocoris puella Reuter, 207 tLygus plagiatus Uhler, 153 tPi/Qphorus clavatus (Linnaeus), 124 Microsynamma bohemanni (Fallen), 42 Plagiognathus guttulosus (Reuter), 40 INeurocolpus nubilis (Say), 182 tP/agiognathus politus Uhler, 29 tOpistheuria clandestina Van Duzee, 131 Quince; see Cydonia oblonga Orthotylus dorsalis (Provancher), 100 Ragweed; see Ambrosia Orthotylus rossi Knight, 102 Ragweed, giant; see Ambrosia trifida tParacalocoris scrupeus (Say), 177 Raspberry; see Rubus odoratus *Phytocoris conspurcatus Knight, 188 Rhus aromatica *Phytocoris erectus Van Duzee, 199 Plat tylellusfraternus Knight, 134 Pi/ophorus brunneus Poppius, 123 Ribes cynosbati tPlagiognathus politus Uhler, 29 tPhytocoris vittatus Reuter, 190 tPlatytylellus rubrovittatus (Stal), 133 Ribes oxyacanthoides tPolymerus venus/us Knight, 170 Horciasfa/lax Reuter, 173 Sambucus sp. Ribes sp. tNeurocolpusjessiae Knight, 183 Paracalocoris colon (Say), 180 Scirpus sp. *Phytocoris canadensis Van Duzee, 193 Teratocoris discolor Uhler, 128 Poecilocapsus lineatus (Fabricius), 172 Scrophularia leporella Robinia pseudoacacia Horcias dislocatus (Say), 173 tDiaphnidia pellucida Uhler, 92 TPlatytyle/lus rubellicollis Knight, 136 tLepidopsallus rubidus (Uhler), 47 Sedges, see Carex, funcus, Scirpus Lopidea robiniae (Uhler), 89 Sheepberry; see Viburnum len/ago Orthotylus robiniae Johnston, 100 Sida spinosa Orthoty/us submarginatus (Say), 103 Reuteroscopus sulphureus (Reuter), 49 Paracalocoris gleditsiae Knight, 180 Silphium perfoliatum $Plagiognathus po/ltus Uhler, 29 Strongylocoris hirtus Knight, 80 Rosa sp. Smartweed; see Polygonum Plagiognathus rosicola Knight, 36 Smilacina racemosa Rubus odoratus Horcias dislocatus (Say), 173 Dicyphus agilis (Uhler), 53 Snowberry; see Symphoricarpos orbiculatus Dicyphusfamelicus (Uhler), 54 Solanum tuberosum Rubus sp. Poecilocapsus lineatus (Fabricius), 172 tPhytocoris breviusculus Reuter, 190 Solidago altissima Rumex sp. Polymerus venaticus (Uhler), 169 Adelphocoris rapidus (Say), 174 Strongylocoris breviatus Knight, 79 Poecilocapsus lineatus (Fabricius), 172 Solidago canadensis Rushes; see 7uncus Lygus vanduzeei Knight, 150 September, 1941 KNIGHT: PLANT BUGS, -OR MIRIDAE, OF ILLINOIS 217

Solidago rugosa Ha/ticus bracteatus (Say), 77 Lopidea media (Say), 89 Trifolium sp. Solidago sp. 4,4delphocoris rapidus (Say), 174 Ilnacora ma/ina (Uhler), 83 Tsuga canadensis Plagiognathus politus Uhler, 29 Microphylellus tsugae Knight, 42 Polymerusflavocostatus Knight, 168 Tupelo; see Nyssa Strongylocoris stygicus (Say), 79 Tussilagofarfara Solomon's seal, false; see Smilacina racemosa Garganusfusiformis (Say), 181 Spartina michauxiana Ulmus americana Trigonotylus tarsalis (Reuter), 129 Neolygus invitus (Say), 157 Spiderwort; see Tradescantia Reu/eria irrorata (Say), 93 Spiraea salicifolia U/mus sp. Plagiognathus albonotatus Knight, 31 *Deraeocoris aphidiphagus Knight, 71 Spruce, black; see Picea mariana *Deraeocoris nitenatus Knight, 72 Spruce, Norway; see Picea exce/sa tDiaphnidia pellucida Uhler, 92 Spurge; see Euphorbia 'Eurychilopterella luridula Reuter, 73 Staphylea trifolia Lopidea heidemanni Knight, 88 Lopidea staphyleae Knight, 90 tMicrophylellus modes/us Reuter, 41 Sumach; see Rhus aromatica *Phytocoris conspurcatus Knight, 189 Sunflower; see Helianthus *Phytocoris cortitectus Knight, 196 Sweet William; see Phlox tPhytocoris sulcatus Knight, 190 Sycamore; see Platanus occidentalis Vaccinium sp. Symphoricarpos orbiculatus Plagiognathus repetitus Knight, 40 JLopidea heidemanni Knight, 88 Verbascum sp. JPlagiognathus politus Uhler, 29 Campylomma Lerbasci (Meyer), 25 tPsallus seriatus (Reuter), 45 Verbena stri/ca tReuteroscopus sulphureus (Reuter), 49 Campylommna verbasci (Meyer), 25 Tamarack; see Larix laricina Vervain, hoary; see Verbena stricta Taxodium distichum Vetchling; see Lathyrus venosus Ceratocapsus taxodii Knight, 111 Viburnum acerifolium Orthotylus taxodii Knight, 101 Neolygus be/fragii (Reuter), 162 Parthenicus taxodii Knight, 76 Viburnum lentago *Phytocoris erectus Van Duzee, 199 Lygidea uiburni Knight, 145 Phytocoris exemplus Knight, 201 Neolygus viburni Knight, 159 Phytocoris taxodii Knight, 203 Viburnum sp. Pilophorus taxodii Knight, 121 Neolygus omnivagus Knight, 163 tP/agiognathus politus Uhler, 29 Virginia creeper; see Psedera quinquefolia Tephrosia sp. Virgin's bower; see Clemalis uirginiana Teleorhinus tephrosicola Knight, 52 Vitis rotundifolia Thuja occidentalis Neolygus inconspicuus Knight, 161 Dichrooscyts tinctipennis Knight, 165 Paraca/ocoris multisignatus Reuter, 180 Dichrooscytus viridicans Knight, 165 Vitis sp. Tickweed; see Coreopsis Ceratocapsus modes/us (Uhler), 111 Ti/ia americana Ceratocapsus pumilus (Uhler), 112 Ceratocapsus modes/as (Uhler), 111 *Hyaliodes vitripennis (Say), 56 fCeratocapsus rubricornis Knight, 109 Paracalocoris scrupeus (Say), 177 *Deraeocoris nitenatus Knight, 72 Paraxenetus guttulatus (Uhler), 209 Neolygus tiliae Knight, 161 Waahoo; see Evonymus atropurpureus Neuroco/pus tiliae Knight, 182 Walnut; see 7uglans *Phytocoris conspurcatus Knight, 188 Walnut, black; see Juglans nigra tPhylocoris sulcatus Knight, 190 Willow; see Salix Plagiognathus sericeus (Heidemann), 34 Willow, black; see Salix nigra Tiia sp. Willow, crack; see Salixfragilis tDeraeocoris quercicola Knight, 71 Willow, sand; see Salix syrticola Timothy; see Phleum pratense Willow, sandbar; see Salix longifolia Tomato; see Lycopersicon esculentum Willow, peach-leaved; see Salix amygdaloides Touch-me-not; see Impatiens biflora Winterberry; see Ilexv verticillat Tradescantia sp. Witchhazel; see Hamamelis virginiana liLopidea media (Say), 89 Woodbine; see Psedera IMiris dolabratus (Linnaeus), 127 Wormwood; see Artemisia canadensis Trifolium pratense Xanthium sp. tLopidea confluenta (Say), 87 Ilnacora s/aii Reuter, 84 Trifolium repens Yarrow; see Achillea BIBLIOGRAPHY

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Hussey, R. F. (Hemiptera, Miridae). Brooklyn 1924. A change of name (Hemiptera, Ent. Soc. Bul. 13(5):111-6. Miridae). Brooklyn Ent. Soc. Bul. 1920. New and little-known species df Phy- 19(5) :165. tocoris from the eastern United States (Heteroptera, Miridiae). Brook- Jakovlev, B. lyn Ent. Soc. Bul. 15(2-3):49-66. 1 1880. Hemiptera-Heteroptera from Russia p1. and adjacent countries (translated 1921. Monograph of the North American from Russian title). Russkoe ento- species of Deraeocori), (Heteroptera, mologicheskoe obshchestvo Trudy Miridae). Minn. .State Ent. 18th 11:200-20. Rep. 1920:76-210,pls. 8-9, figs. 2-44. Johnston, Horace G. 1922a. Nearctic records 'for species of 1930. Four new species of Miridae from Miridae known heretofore only from Texas. Brooklyn Ent. Soc. Bul. the Palaearctic region (Heteroptera). 25(5) :295-300. Can. Ent. 53(12):280-8. 1935. Five new species of Miridae. Brook- 1922b. The North American species of lyn Ent. Soc. Bul. 30(1):15-8. Labops (Heteroptera, Miridae). Can. Kirschbaum, C. L. Ent. 54(11):258-61. 1855. Rhynchotographische Beitrage. Die 1923a. A new Peritropis from the eastern Rhynchoten der Gegend von Wies- United States (Heteroptera, Miridae). baden. Erstes Heft, die Capsinen. Ent. News 34(2):50-2. Jahrbilcher des Vereins fur Natur- 1923b. A new species of Labopidea on garlic kunde. in Herzogthum Nassau 10: (Heteroptera, Miridae). Brooklyn 161-348. 4lso separate, Wiesbaden, Ent. Soc. Bul. 18(1):31. 189 pp. 1923c. A fourth paper on the species of Lopidea (Heteroptera, Miridae). Ent. Knight, Harry H. News 34(3):65-72. 2 pls. 1915. Observations on the oviposition of 1923d. The Miridae (or Capsidae) of Con- certain Capsids. Jour. Econ. Ent. hecticut. In Bul. 34, Conn. Geol. and 8(2) :293-8. Nat. Hist. Surv., pp. 422-658, figs. 1916a. Remarks on Lygus invitus Say, with 47-149. descriptions of a new species and 1925. Descriptions of twelve new species of variety of Lygus. (Hemiptera, Polymerus (Hemiptera, Miridae). Can. Miridae.) Can. Ent. 48(10):345-9. Ent. 57(10) :244-53. 1916b. Paracalocoris hawleyi n. sp., and var. 1926a. Descriptions of four new species of ancora ni. Ent. Soc. Am. Ann. 9(4): Plagiognathus from the eastern 377-8. United States (Hemiptera, Miridae). 1917a. New and noteworthy forms pf North F.7ht. News 37(1):9-12. American Miridae (Hemiptera). Ent. 1926b. A new Rhinacloa and three new News 28(1):3-8. species of Lepidopsallus (Hemiptera, 1917b. A revision of the genus Lygus as it Miridae). Brooklyn Ent. Soc. Bul. occurs in America north of Mexico, 20(5):225-8. (Dated 1925.) with biological data on the species 1926c. Capsus simnulans (Stal) and Labops from New York. N. Y. (Cornell) Ag. burmeisteri Stal recognized from the Exp. Sta. Bul. 391:555-645. 1 pI. Nearctic region. Can. Ent. 58(3): 1917c. Notes on species of Miridae inhabit- 59-60. ing ash trees (Fraxinus) with the descriptions of new species (Hemip- 1926d. Descriptions of seven new species of tera). Brooklyn Ent. Soc. Bul. Pilophorus (Hemiptera, Miridae). 12(4) :80-2. Brooklyn Ent. Soc. Bul. 21(1):18-26. 1917d. New species of Lopidea (Miridae, 1926e. Descriptions of nine new species of Hemiptera). Ent. News 28(10): Bryocorinae (Hemiptera, Miridae). 455-61. Brooklyn Ent. Soc. Bul. 21(3):101-8. 1926/. Notes on species of Polymerus with 1918a. Synoptic key to the subfamilies of descriptions of four new species and Miridae (Hemiptera, Heteroptera). two new varieties (Hemiptera, Mi- N. Y. Ent. Soc. Jour. 26(1) :40-4. ridae). Can. Ent. 58(7):164-8. 1 pI. 1926g. Descriptions of eleven new species of 1918b. Old and new species of Lopidea from Phytocoris from eastern North Ameri- the United States (Hemiptera, Mi- ca (Hemiptera, Miridae). Brooklyn ridae). Ent. News 29(6) :210-6. 1 pI. Ent. Soc. Bul. 21(4):158-68. 1918c. Additional data on the distribution 1926h. Descriptions of six new species of and food plants of Lygus with descrip- Miridae from eastern North America tions of a new species and variety (Hemiptera, Miridae). Can. Ent. (Hemiptera, Miridae). Brooklyn 58(10) :252-6. Ent. Soc. Bul, 13(2) :42-5. 1926i. A key to the North American species 1918d. Interesting new species of Miridae of Macrolophus with descriptions of from the United States, with a note two new species (Hemiptera, Miri- on Orthocephalus mutabilis (Fallen) dae). Ent. News 37(10): 313-6. 220 IJLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 22,JArt. 1

1926j. Descriptions of seven new Paracalo- 1939a. Three new species of Miridae from coris with keys to the Nearctic species North America (Hemiptera). Bul. and varieties (Hemiptera, Miridae). Brooklyn Ent. Soc. 34(1):21-3. Ent. Soc. Am. Ann. 19(4):367-77. 1939b. Reuteria Puton: four new species 1927a. Notes on the distribution and host from the United States (Hemiptera, plants of some North American Miridae). Iowa State Col. Jour. Miridae (Hemiptera). Can. Ent. Sci. 13(2):129-33. 1 p1. 59(2) :34-44. Knight, H. H., and W. L. McAtee 1927b. Descriptions of twelve new species 1929. Bugs of the family Miridae of the of Miridae from the District of District of Columbia and vicinity. Columbia and vicinity (Hemiptera). 27 Biol. Soc. Wash. Proc. 40(2):9-18. U. S. Natl. Mus. Proc. 75:(13). pp. 1927c. Descriptions of fifteen new species of Leonard, Mortimer D. Ceratocapsus (Hemiptera, Miridae). 1928. A list of the insects of New York. Ohio Jour. Sci. 27(3):143-54. N. Y. (Cornell) Ag. Exp. Sta. Mem. 1927d. New species and a new genus of 101. 1121 pp. Deraeocorinae from North America Linnaeus, Carl (Hemiptera, Miridae). Brooklyn 1758. Systema naturae, tenth edition. Ent. Soc. Bul. 22(3):136-43. Holmiae. 1. 2+824 pp. 1927e. Descriptions of seven new species of 1761. Fauna Suecica, second edition. Stock- the genus Orthotylus Fieber (Hemip- holmiae. 46+578 pp., 2 pls. tera, Miridae). Can. Ent. 59(8): 176-81. 1767. Systema naturae, twelfth edition. 1928a. New species of Labopidea and Ma- Holmiae. 1(2) :533-1327. crotyloides (Hemiptera, Miridae). McAtee, Waldo Lee Can. Ent. 60(10):233-6. 1916. Key to the Nearctic species of 1928b. Iist of Miridae and Isometopidae in Paracalocoris (Heteroptera, Miridae). Leonard 1928. Ent. Soc. Am. Ann. 9(4):366-90. 1929a. New species of Halticotoma and 1919. Notes on two Miridae, Camptobrochis Sixeonotus (Hemiptera, Miridae). and Paracalocoris (He-teroptera). Ent. Brooklyn Ent. Soc. Bul. 23(5):241-9. News 30(9):246-7. (Dated 1928). Meyer-Dir, L. R. new of 1929b. Descriptions of five species 1843. Verzeichniss der in der Schweiz Plagiognathus from North America einheimischen Rhynchoten (Hemip- (Hemiptera, Miridae). Ent. News tera Linn.). Heft 1, familie Capsini. 40(3) :69-74. Solothurn. x+115+iv pp., 7 pis. 1929c. New species of Neoborus and Xeno- borus (Hemiptera, Miridae). Brook- Osborne, Herbert lyn Ent. Soc. Bul. 24(1):1-11. 1898. Additions to the list of Hemiptera ot 1929d. The fourth paper on new species of Iowa. Acad. Sci. Pro. 5:232-47. Plagiognathus (Hemiptera, Miridae). Iowa Ent. News 40(8):263-8. Oshaniin, B. 1930a. An European plant-bug (A.delpho- 1906-10. Verzeichnis der palaearctischen coris lineolats Goeze) found in Iowa Hemipteren mit besonderer Beriuck- (Hemiptera, Miridae). Ent. News sichtigung ihrer Verteilung im russis- 41(1):4-6. chen Reiche. Anrnuaire du Mus&e 1930b. New species of Psallus Fieber (He Zoologique de l'Academie Imperiale miptera, Miridae). Can. Ent. 62 des Sciences, St. Petersburg, xi-xv (6) :125-31. (Supplements). Vol. 1. Heteroptera. 1930c. New species of Ceratocapsus (He- Lief. 1:lxxiv-393, 1906; Lief. 2:395- miptera, Miridae). Brooklyn Ent. 586, 1908; Lief. 3: 587-1087, 1910 Soc. Bui. 25(4):187-98. (1909). Vol. 2. Homoptera (1906- 1930d. A new key to Paracalocoris with 08). Vol. 3. Nachtrage und Verbess- descriptions of eight new species (He- erung zum 1 und 2 Bande. xvi+217 miptera, Miridae). Ent. Soc. Am. +1 pp., 1910. Ann. 23(4):810-27. Parshley, Howard Madison 1931. Dacota hesperia Uhler referred to Atractotomus, also descriptions of 1922. Report on a collection of Hemiptera- three new species (Hemiptera, Mi- Heteroptera from South Dakota. ridae). Brooklyn Ent. Soc. Bul. S. D. State Ent. Tech. Bul. 2. 22 pp., 26(1):36-8. 2 figs. 1934. Neurocolpus Reuter: key with five B. R. new species (Hemiptera, Miridae). Poppius, Brooklyn Ent. Soc. Bul. 29(4):162-7. 1914a. Ubersicht der Pilophorus-arten nebst 1938. Strongylocoris Blanchard: six new beschreibung verwandter Gattung species from North America (Hemip- (Hemiptera, Heteroptera). Annales tera, Miridae). Iowa State Col. Jour. de la Societe Entomologique de Sci. 13(1):1-7. 1 pl. Belgique 58:237-54.