John Ascher

Research Scientist


  1. Tonietto R. K., and J. S. Ascher. 2009. Occurrence of the Old World bee species Hylaeus hyalinatus, Anthidium manicatum,A. oblongatum, and Megachile sculpturalis,andthe native species Coelioxys banksi, Lasioglossum michiganense, and L. zophops in Illinois (Hymenoptera: Apoidea: Colletidae, Halictidae, Megachilidae,). The Great Lakes Entomologist (in press).
  2. Gibbs, J., J. S. Ascher, and L. Packer. 2009. Proposal for precedence of Dialictus  Robertson, 1902 and Evylaeus Robertson, 1902 over Hemihalictus Cockerell, 1897, Sudila Cameron, 1898 and Sphecodogastra, Ashmead, 1899 (Insecta, Hymenoptera). Bulletin of Zoological Nomenclature 66(2): 147-158.
  3. Rozen, J. G., Jr., H. Özbek, J. S. Ascher, and M. G. Rightmyer. 2009. Biology of the bee Hoplitis (Hoplitis) monstrabilisTkalcü and descriptions of its egg and larva (Megachilidae: Megachilinae: Osmiini). American Museum Novitates 3645: 12 pp.
  4. Tuell, J. K. , J. S. Ascher, and R. Isaacs. 2009. Wild Bees (Hymenoptera: Apoidea: Anthophila) of the Michigan highbush blueberry agroecosystem. Annals of the Entomological Society of America 102(2): 275-287
  5. Fetridge, E. D., J. S. Ascher, and G. A. Langellotto. 2008. The bee fauna of residential  gardens in a suburb of New York City (Hymenoptera Apoidea). Annals of the Entomological Society of America 101(6):1067-1077.
  6. Engel, M. S., J. S. Ascher, and D. Yanega. 2008. Ancylini Michener, 1944 (Insecta,  Hymenoptera): proposed emendation of spelling to Ancylaini, to remove homonymy with Ancylini Rafinesque, 1815 (Mollusca, Gastropoda). Bulletin of Zoological Nomenclature 65(3): 198-201.
  7. Rasmussen, C. and J. S. Ascher.2008.Heinrich Friese (1860-1948): Names proposed  and notes on a pioneer melittologist (Hymenoptera, Anthophila). Zootaxa 1833: 1-118.
  8. Wagner, D. L. and J. S. Ascher. 2008. Rediscovery of Epeoloides pilosula (Hymenoptera: Apoidea: Apidae) in New England. Journal of the Kansas Entomological Society 81(2): 81-83.
  9. Kawakita, A., J. S. Ascher, T. Sota, M. Kato, and D. W. Roubik. 2007. Phylogenetic analysis of the corbiculate bee tribes based on 12 nuclear protein-coding genes  (Hymenoptera: Apoidea: Apidae). Apidologie 39: 163-175.
  10. Winfree, R., N. M. Williams, H. Gaines, J. S. Ascher, and C. Kremen. 2008. Wild  pollinators provide majority of crop visitation across land use gradients in New Jersey and Pennsylvania. Journal of Applied Ecology 45: 793-802 45.
  11. Matteson, K. C., J. S. Ascher, and G. A. Langellotto. 2008. Bee richness and abundance  in New York City urban gardens. Annals of the Entomological Society of  America 101(1): 140-150(11).
  12. Romey, W. L., J. S. Ascher, D.A. Powell, and M. Yanek. 2007. Impacts of logging on  midsummer diversity of native bees (Apoidea) in a northern hardwood forest.  Journal of the Kansas Entomological Society 80(4): 327–338.
  13. Taki, H., P. G. Kevan, and J. S. Ascher. 2007. Landscape effects of forest loss in a  pollination system. Landscape Ecology 22(10): 1575-1587.
  14. Ascher, J. S., M. S. Engel, and T. L. Griswold. 2006. A new species and subgenus of  Oxaea from Ecuador(Hymenoptera: Andrenidae). Polskie Pismo Entomologiczne 75(4): 539-552
  15. Gardner, K.E., and J. S. Ascher. 2006. Notes on the native bee pollinators in  New York apple orchards. Journal of the New York Entomological Society  114(1-2): 86-91.
  16. Giles, V., and J. S. Ascher.2006. Bees of the Black Rock Forest Preserve, New York (Hymenoptera: Apoidea). Journal of Hymenoptera Research 15(2): 208-231.
  17. Ascher, J. S., P. Gambino, and S. Droege. 2006. Adventive Hylaeus (Spatulariella Popov) in the New World (Hymenoptera: Apoidea: Colletidae). Proceedings of the Entomological Society of Washington 108(1): 237-239.
  18. Ascher, J. S., and M. S. Engel. 2006. On the availability of family-group names based on Scrapter (Hymenoptera: Colletidae). Entomological News 117(1): 117-119.
  19. Winter, K., L. Adams, R. Thorp, D. Inouye, L. Day, J. S. Ascher, and S. Buchmann. 2006. Importation of non-native bumble bees into North America: Potential consequences of using Bombus terrestris for greenhouse crop pollination in Canada, Mexico, and the United States. A white paper of the North American Pollinator Protection Campaign (NAPPC). Washington, DC: Coevolution Institute.
  20. Buchmann, S. L., and J. S. Ascher. 2005. The plight of pollinating bees. Bee World 86: 71-74.
  21. Ascher, J. S. Epeoloides pilosula (Cresson, 1878) [a cleptoparasite of Macropis oil bees]  (Hymenoptera: [Apoidea:] Apidae: Apinae: Osirini) in Shepherd, M. D., D. M.  Vaughn, and S. H. Black (Eds.). 2005. Red List of Pollinator Insects of North  America. CD-Rom Version 1. Portland, Oregon: The Xerces Society for  Invertebrate Conservation.
  22. Ascher, J. S., and M. S. Engel. pp. 13-17 in Engel. 2005. Family-group names for Bees (Hymenoptera: Apoidea) [descriptions of new subfamily Scraptrinae, new tribe Neffapini, and new subtribe Hesperapina]. American Museum Novitates No. 3476, 33 pp.
  23. Gusenleitner, F., M. Schwarz, J. S. Ascher, and E. Scheuchl. 2005. Korrekturen und Nachträge zu Gusenleitner & Schwarz (2002): Weltweite Checkliste der Bienengattung Andrena mit Bemerkungen und Ergänzungen zu paläarktischen Arten (Hymenoptera: Apidae, Andreninae, Andrena)” Entomofauna 26(26): 437-472.
  24. Kawakita, A., T. Sota, M. Ito, J. S. Ascher, H. Tanaka, M. Kato, D. W. Roubik. 2004. Phylogeny, historical biogeography, and character evolution in bumble bees (Bombus: Apidae) based on simultaneous analysis of three nuclear gene sequences. Molecular Phylogenetics and Evolution 31: 799-804.
  25. Ascher, J. S. 2003. Evidence for the phylogenetic position of Nolanomelissa from nuclear EF-1 sequence data. In Rozen, J. G., Jr. A new tribe, genus, and species of South American panurgine bee (Andrenidae: Panurginae), oligolectic on Nolana(Nolanaceae).pp. 107-108, in Apoidea Neotropica: Homenagem aos 90 Anos de Jesus Santiago Moure. G. A. R. Melo, and I. Alves dos Santos, Eds. Criciúma: UNESC.
  26. Kawakita, A., T. Sota, J. S. Ascher, M. Ito, H. Tanaka, M. Kato. 2003. Evolution and phylogenetic utility of alignment gaps within intron sequences of three nuclear genes in bumble bees (Bombus). Molecular Biology and Evolution 20: 87-92.
  27. Ascher, J. S., and S. Patiny. 2002. A new name for the bee subgenus Stenostylus (Hymenoptera: Andrenidae). Entomological News 113: 140.
  28. Schultz, T. R., M. S. Engel, and J. S. Ascher. 2001. Evidence for the origin of eusociality in corbiculate bees (Hymenoptera: Apidae). Journal of the Kansas Entomological Society 74(1): 10-16.
  29. Ascher, J. S., B. N. Danforth, and S. Ji. 2001. Phylogenetic utility of the major opsin in bees (Hymenoptera: Apoidea): a reassessment. Molecular Phylogenetics and Evolution 19(1): 79-93.
  30. Ascher, J. S. 2001. Hylaeus hyalinatus Smith, a European bee new to North America, with notes on other adventive bees (Hymenoptera: Apoidea). Proceedings of the Entomological Society of Washington 103(1): 184-190.