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Ientific Papers QL 568 .H3 1997 CfL^ ientific Papers Natural History Museum The University of Kansas 17 December 1997 Number 5:1-21 New Genera and Subgenera of Augochlorine Bees (Hymenoptera: Halictidae)^ By Michael S. Engel-, Robert W. Brooks^ and Douglas Yanega* Comstock Hall Cornell -Department of Entomology , , University, Ithaca, New York 14853, USA. ^Division of Entomology, Natural History Museum, University of Kansas, Lazvrence, Kansas 66045, USA. ^Illinois Natural History Survey, 607 E. Peabody Drive, Champmigii, Illinois 61820, USA. Current address: Departamento Biologia Geral, Universidade de Federal de Minas Gerais, C.P. 486, 30161-970 Belo Horizonte, Minas Gerais, Brazil. CONTENTS ABSTRACT 1 INTRODUCTION 2 Acknowledgments 2 METHODS 3 TAXONOMY 3 Chlerogelloides new genus 3 Xenochlora new genus 7 Megalopta (Noctoraptor) new subgenus 12 Megommation (Stilhochlora) new subgenus 15 Megommation {Cleptommation) new subgenus 19 LITERATURE CITED 21 ABSTRACT Two new augochlorine genera, Chlerogelloides and Xenochlora, and three new subgenera, Megalopta (Noctoraptor), Megommation {Stilhochlora), and Megonunation (Cleptommation), are described and figured. Three new combinations are made: Megommation minutum (Friese), Xenochlora nigrofemorata (Smith), and Xenochlora ianthina (Smith). Six new species are described: Chlerogelloides femoralis, Xenochlora ochrosterna, Xenochlora chalkeos, Megalopta (Noctoraptor) hyroni, M. (N.) noctifurax, Contribution Number 3190 from the Snow Entomological Division. Natural History Museum, and Department of Entomology. The University of Kansas. © Natural History Museum, The University of Kansas ISSN No. 1094-0782 QL 568 .H3 E53 1997 scientific Papers Natural History Museum The University of Kansas 17 December 1997 Number 5:1-21 New Genera and Subgenera of Augochlorine Bees (Hymenoptera: Halictidae)^ By Michael S. Engel-, Robert W. Brooks^ and Douglas Yanega"* ^Department of Entomology, Comstock Hall, Cornell University, Ithaca, New York 14853, USA. ^Division of Entomology, Natural History Museum, University of Kansas, Lawrence, Kansas 66045, USA. *Illi)iois Natural History Sunvy, 607 E. Peahody Drive, Champaign, Illinois 61820, USA. Curreiit address: Departamento Biologia Geral, Universidade de Federal de Minas Gerais, C.P. 486, 30161-970 Belo Horizonte, Minas Gerais, Brazil. CONTENTS ABSTRACT 1 INTRODUCTION 2 Acknowledgments 2 METHODS 3 TAXONOMY 3 Chlerogelloides new genus 3 Xenochlora new genus 7 Megalopta (Noctoraptor) new subgenus 12 Megommatioii (Stilbochlora) new subgenus 15 Megommation {Cleptonunation) new subgenus 19 LITERATURE CITED 21 ABSTRACT Two new augochlorine genera, Chlerogelloides and Xenochlora, and three new subgenera, Megalopta {Noctoraptor), Megommation (Stilbochlora), and Megommation (Cleptonunation), are described and figured. Three new combinations are made: Megommation minutum (Friese), Xenochlora nigrofemorata (Smith), and Xenochlora ianthina (Smith). Six new species are described: Chlerogelloides femoralis, Xenochlora ochrosterna, Xenochlora chalkeos, Megalopta (Noctoraptor) In/roni, M. (N.) noctifiirax, Contribution Number 3190 from the Snow Entomological Division, Natural History Museum, and Department ol Entomology. The University of Kansas. © Natural History Museum, The University of Kansas ISSN No. 1094-0782 Scientific Papers, Natural History Museum, The University of Kansas and Mrgo>nmation {S'.Hbochlora) eickivorti. Megalopta (Noctomptor) and Megommation (Ckptommatkm) are parasitic, possibly on other species of Megalopta and MegLvnmatiou, respectively, and together in- crease the number of origins of cleptoparasitism in the tribe Augochlorini to three. For each genus- group taxon, modified key couplets are provided for Eickwort's key to the genera of Augochlorini. ivonis: Key Bees; Halictidae; Augochlorini; Clilerogelloides; Megalopta; Megommation; Xenochlora; cleptoparasites; nocturnal; neotropics. INTRODUCTION The Augochlorini is a New World tribe of sweat bees Acknowledgments (Halictinae) with their greatest diversity in the tropics. We are indebted to discussions with C. D. Michener re- Many species are brilliant metallic green, hence the name = = garding characters and names for these new taxa. W. E. Augochlorini (Gr. aiige shine, chloros green), although Duellman, C. D. Michener, and L. Packer kindly examined coloration throughout the tribe varies widely. The tribe can an earlier version of the manuscript and valu- be recognized from other New World halictine bees by the provided able criticisms. Their insights greatly improved the final absence of a pygidial plate on Tergum VII of males, the version. we are thankful to the in- presence of a spiculum on Sternum VIII of males, and the Additionally, following stitutions and curators who graciously provided material presence of a medio-apical cleft in Tergum V of females. used in this American Museum of Natural The genera of the Augochlorini were last revised by study: History, New York, New York, J. G. Rozen, Jr., and E. Quinter Eickwort (1969), and since the time of his work only three ( AMNH); Bohart Museum, University of California, Davis, genera have been added: the extant genera Micrommatiou CaHfornia, L. S. Kimsey (UCDC); British Museum, Natu- (Moure, 1969) and Isclinomelissa (Engel, in press), and the ral History, London, S. Lewis and G. Else (BMNH); Cornell Dominican Oligo-Miocene amber genus Oligochlora (Engel, University Insect Collection, Ithaca, New York, J. K. 1996). Herein we describe two new genera and three new Liebherr and E. R. Hoebeke (CUIC); Mississippi State In- subgenera of augochlorine bees; these are based primarily sect Collection, Mississippi State, Mississippi, R. L. Brown on newly discovered species. (MEMO; Museum National d'Histoire Naturelle, Paris, Two of the groups presented below, Noctoraptor and J. Casevitz-Weulersse (MNHN); Natural History Museum Cleptommation, are parasitic with females possessing the — of Los Angeles County, Los Angeles, California, R. R. usual suite of parasitic characters reduced scopa, large Snelling (LACM); Division of Entomology, Natural His- scythe-like mandibles, and absence of the basitibial plate. tory Museum, University of Kansas, Lawrence, Kansas, R. Previously the only parasitic augochlorines were species W. Brooks (SEMC); of Arkansas, of the genus Temnosoma Smith. Temnosoma is a close rela- University Fayetteville, Arkansas, S. Cameron (UADE); Utah State University, tive of Aiigochloropsis Cockerell, but neither is closely re- USDA Bee Biology and Systematics Laboratory, Logan, lated to the newly discovered parasitic species. The new Utah, T. L. Griswold (EMUS); Department of Biology, York parasitic taxa represent new subgenera of the genera University, North York, Ontario, L. Packer (PACK); Museo Megalopta Smith and Megommation Moure respectively. de Invertebrados, Instituto Humboldt, Santa Fe de Because of the systematic position of these taxa, the num- Bogota, Colombia, F. Fernandez (IHUM); Provincial Museum of ber of independent origins of cleptoparasitism in the Alberta, Edmonton, Alberta, A. Finnamore (PMAE); United Augochlorini is increased to three. States National Musevun, Washington, D.C., R. J. Herein we provide modified couplets for Eickwort's McGinley (USNM); Smithsonian Tropical Research Institute, Panama (1969) key to the genera of Augochlorini. Couplet num- City, Panama, D. W. Roubik (STRI); Museum, bers are from Eickwort (1969), except those numbers with Zoologisches Humboldt-Universitat, Berlin, F. Koch and A. Kleine- primes which need to be inserted into his keys. The keys Mollhoff (ZMHB); and the Museu de Padre provided for the subgenera oi Megalopta and Megommation Entomologia Jesus Santiago Moure, Departamento de Zoologia, are new and the numbers do not refer to Eickwort's keys. Universidade Federal do Parana, Brazil, S. Moure Instead, these keys should be used in combination with J. (DZUP). Eickwort (1969). A complete reclassification and new key MSE's in this work was to the genera and subgenera of the Augochlorini is cur- participation supported through the of rently in preparation by the senior author. The phyloge- generosity the National Science Foundation netic position of these taxa will be treated in a forthcom- (Predoctoral Fellowship), Harvard University Museum of ing paper on cladistic relationships among the genera and Comparative Zoology (Ernst Mayr Award), the American subgenera of Augochlorini by Engel. Museum of Natural History (Collection Study Grant), and New Augochlorine Bees used for the Department of Entomology and Graduate School of allowing us to publish the specific name he had to S. of these and to include the of his Cornell University. MSE is grateful J. G. Rozen, Jr., one species, specimens their collection in our He had Lewis, G. Else, and J. Casevitz-Weulersse for help and study. independently recognized but never hospitality during his visits to their respective institutions. two of these species as new 40 years ago pub- The work presented herein is to be included in a mono- lished on them. of the and graph augochlorine genera subgenera being We take this opportunity to dedicate this work to the MSE as of a Ph.D. dissertation at Cornell completed by part memory of Byron A. Alexander who passed away 30 No- Part of DY's was aided the University. participation by vember 1996. Byron was an esteemed colleague and dear S. Universidade Federal do Parana and Padre J. Moure, friend. His work will continue to have an influence on our his visit their collections for which we during researching work and lives.
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