Revision of Tlie Genus Amblycerus of the United States and Iviexico
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^ii^^. wfiited States (íiÍÜ¡w¡ Department of N^^^ Agriculture Revision of tlie Genus Agricultural Research Amblycerus of the United Service Technical States and iVIexico Bulletin 1845 November 1996 (Coleóptera: Bruchidae: Amblycerinae) 0 United States Department of Revision of the Genus Amblycerus Agriculture Agricultural of the United States and l\/iexico Research Service (Coleóptera: Bruchidae: Technical Bulletin 1845 Amblycerinae) November 1996 Jesús Romero, Clarence Dan Johnson, and John M. Kingsolver Romero was a CONACYT fellow and Johnson is professor of biological sciences, emeritus, Northern Arizona University, Flagstaff, AZ 86011. Kingsolver was a research associate. Systematic Entomology Laboratory, PSI, Agricultural Research Service, U.S. Department of Agriculture, Beltsville, MD. Romero is currently profesor investigador. Entomológica del CENA, Centro de Entomología y Acarología, Colegio de Postgraduados, Chapingo, Estado de México C.P. 56230, México. Kingsolver currently is a research associate, Florida State Collections of Arthropods, P.O. Box 141700, Gainesville, FL 32614-7100. Abstract Acknowledgments Romero, J., CD. Johnson, and J.M. Kingsolver. 1996. Our appreciation to Tina Ayers, C. Slobodchikoff, and Revision of the Genus Amblycerus of the United States M. Wagner for reviews of early drafts of the manu- and Mexico (Coleóptera: Bruchidae: Amblycerinae). script. The support of the Consejo Nacional de Ciencia U.S. Department of Agriculture, Technical Bulletin No. y Tecnología (CONACYT) and Colegio de 1845, 166 pp. Postgraduados, Chapingo, Mexico, to the senior author is gratefully recognized. A key to species and descriptions are presented for 40 species of the genus Amblycerus of the United States The United States Department of Agriculture and Mexico. New species atkinsoni, cuernavacensis, (USDA) prohibits discrimination in its programs Chiapas, evangelinae, guerrerensis, hespenheidei, on the basis of race, color, national origin, sex, ireriae, mariae, and veracruz are described. religion, age, disability, political beliefs and Amblycerus serieguttatus is a senior synonym of A. marital or familial status. (Not all prohibited luctuosus. Species of Amblycerus were divided into 15 bases apply to all programs.) Persons with groups. Seven species occur in the United States, and disabilities who require alternative means for 33 in Mexico. Some species also occur in Central and communication of program information (Braille, South America. Host plant records are reported for 27 large print, audiotape, etc.) should contact the species feeding in 54 different species of plants in 13 USD A Office of Communications at (202) 720- families. Amblycerus feed primarily in seeds of 2791. Leguminosae and to a lesser extent of Boraginaceae. Less common hosts are members of the Anacardiaceae, To file a complaint, write the Secretary of Agri- Combretaceae, Euphorbiaceae, Malpighiaceae, culture, U.S. Department of Agriculture, Wash- Malvaceae, Rhamnaceae, Sterculiaceae, Tiliaceae, ington, DC 20250 or call 1-800-245-6340 (voice) Verbenaceae, and Vitaceae. or (202) 720-1127 (TDD). USDA is an equal employment opportunity employer. This is part of a series of studies of bruchid genera contributing to a comprehensive database for this important seed-feeding beetle family in the Western November 1996 Hemisphere. It provides the means for identification of these insects for taxonomists, students, museum curators, biodiversity workers, port identifiers, and ecologists conducting studies in rangeland, pasture, and forest management in the United States and Mexico. Keywords: Coleóptera, Bruchidae, Amblycerinae, Amblycerus, Leguminosae, United States, Mexico, keys, insect taxonomy. North America, insect-plant interactions. While supplies last, single copies of this publication may be obtained at no cost from USDA-ARS: CD. Johnson, Biology-Box 5640, Northern Arizona Univer- sity, Flagstaff, AZ 86011-5640. Copies of this publication may be purchased from the National Technical Information Service, 5285 Port Royal Rd., Springfield, VA 22161; telephone (703)487-4650. Contents List of figures vi Abbreviations vii Introduction 1 Literature review and taxonomic history 3 Materials and methods 5 Specimens 5 Characters 6 Genitalia preparation and illustration 6 Descriptions, host plants, and distribution 6 Taxonomy Genus Amblycerus Thunberg 7 Key to species of Amblycerus of the United States and Mexico 7 Species groups 12 Pterocarpae group 12 Piurae group 12 Epsilon group 12 Multiflocculus group 13 Spondiae group 13 Alternatus group 13 Robiniae group 14 Perfectus group 14 Obscurus group 14 Sthdulator group 14 Anosignatus group 15 Cistelinus group 15 Marmoratus group 15 Championi group 15 Scutellaris group 15 Host plants and distribution 17 Species of Amblycerus 19 Amblycerus acapulcensis Kingsolver 20 Amblycerus alternatus (Pic) 22 Amblycerus anosignatus (Chevrolat) 24 Amblycerus atkinsoni Romero, Johnson, and Kingsolver, new species 26 Amblycerus baracoensis Kingsolver 28 iii Amblycerus barcenae (Dugès) 30 Amblycerus biolleyi (Pic) 32 Amblycerus cerdanicola Kingsolver 34 Amblycerus championi (Pic) 36 Amblycerus Chiapas Romero, Johnson, and Kingsolver, new species 38 Amblycerus cistelinus (Gylleniial) 40 Amblycerus cuernavacensis Romero, Johnson, and Kingsolver, new species 43 Amblycerus epsilon Kingsolver 45 Amblycerus eustrophoides (Schaeffer) 48 Amblycerus evangelinae Romero, Johnson, and Kingsolver, new species 50 Amblycerus guazumicola Kingsolver and Johnson 52 Amblycerus guerrerensis Romero, Johnson, and Kingsolver, new species 54 Amblycerus hespenheidei Romero, Johnson, and Kingsolver, new species 56 Amblycerus ireriae Romero, Johnson, and Kingsolver, new species 58 Amblycerus mariae Romero, Johnson, and Kingsolver, new species 60 Amblycerus marmoratus (Sharp) 63 Amblycerus multiflocculus Kingsolver 65 Amblycerus nigromarginatus (Motschulsky) 67 Amblycerus obscurus (Sharp) 69 Amblycerus perfectus (Sharp) 71 Amblycerus pictus (Sharp) 73 Amblycerus piurae (Pierce) 75 Amblycerus pterocarpae Kingsolver 77 Amblycerus pygidialis (Suff rian) 79 Amblycerus robiniae (Fabricius) 81 Amblycerus sallei (Jekel) 84 Amblycerus schwarzi Kingsolver 86 Amblycerus scutellaris (Sharp) 88 Amblycerus serieguttatus (Chevrolat) 90 Amblycerus sosia Ribeiro-Costa and Kingsolver 92 Amblycerus spondiae Kingsolver 94 Amblycerus sír/c/ív/aíor Kingsolver, Romero N., and Johnson 96 IV Amblycerus teutoniensis Ribeiro-Costa and Kingsolver 98 Amblycerus veracruz Romero, Johnson, and Kingsolver, new species 100 Amblycerus vitis (Schaeffer) 102 Conclusions 104 Appendix 1. Species groups of Amblycerus 105 Appendix 2. Host plants and associated Amblycerus 106 Appendix 3, Amblycerus species and their host plants 109 Appendix 4. Synonymical list of Amblycerus species of the United States and Mexico 112 Appendix 5. Distribution of 4/wb/yceru5 species 114 References 117 Figures 127 List of Figures Figures 1-2. Amblycerus acapulcensis, male genitalia Figures 3^. Amblycerus alternatus, male genitalia Figures 5-6. Amblycerus anosignatus, male genitalia Figures 7-8. Amblycerus atkinsoni, male genitalia Figures 9-10. Amblycerus baracoensis, male genitalia Figures 11-12. Amblycerus barcenae, male genitalia Figures 13-14. Amblycerus biolleyi, male genitalia Figures 15-16. Amblycerus cerdanicola, male genitalia Figures 17-18. Amblycerus championi, male genitalia Figures 19-20. Amblycerus chiapas, male genitalia Figures 21-22. Amblycerus cistelinus, male genitalia Figures 23-24. Amblycerus cuernavacensis, male genitalia Figures 25-26. Amblycerus epsilon, male genitalia Figures 27-28. Amblycerus eustrophoides, male genitalia Figures 29-30. Amblycerus evangelinae, male genitalia Figures 31-32. Amblycerus guazumicola, male genitalia Figures 33-34. Amblycerus guerrerensis, male genitalia Figure 35. Amblycerus hespenheidei, male genitalia Figures 36-37. Amblycerus ireriae, male genitalia Figures 38-39. Amblycerus mariae, male genitalia Figures 40-41. Amblycerus marmoratus, male genitalia Figures 42^3. Amblycerus multiflocculus, male genitalia Figures 44^5. Amblycerus nigromarginatus, male genitalia Figures 46-47. Amblycerus obscurus, male genitalia Figures 48^9. Amblycerus perfectus, male genitalia Figures 50-51. Amblycerus pictus, male genitalia Figures 52-53. Amblycerus piurae, male genitalia Figures 54-55. Amblycerus pterocarpae, male genitalia Figures 56-58. Amblycerus pygidialis, male genitalia Figures 59-60. Amblycerus robiniae, male genitalia Figures 61-62. Amblycerus sallei, male genitalia Figures 63-65. Amblycerus schwärzt, male genitalia Figures 66-68. Amblycerus scutellaris, male genitalia Figures 69-70. Amblycerus serieguttatus, male genitalia Figures 71-72. Amblycerus sosia, male genitalia Figures 73-74. Amblycerus spondiae, male genitalia Figures 75-76. Amblycerus stridulator, male genitalia Figures 77-79. Amblycerus teutoniensis, male genitalia Figures 80-81. Amblycerus Veracruz, male genitalia Figures 82-83. Amblycerus vitis, male genitalia VI Abbreviations from the collection of— AMNH American Museum of Natural History, New York COB Charles & Lois O'Brien, Florida A&M University, Tallahassee CAS California Academy of Sciences, San Francisco CDA California Department of Agriculture, Sacramento CM Carnegie Museum of Natural History, Pittsburgh, PA CNC Canadian National Collection, Ottawa HFH H.F. Howden Collection, Ottawa, Canada HH Henry Hespenheide, UCLA KU University of Kansas, Lawrence LSU Louisiana State University, Baton Rouge MCZ Museum of Comparative Zoology, Harvard