Publications by PI – Full List

Last updated: 6 Aug 2018.


Thomson, S. A., Pyle, R. L., Ahyong, S. T., Alonso-Zarazaga, M., Ammirati, J., Araya, J. F., Ascher, J. S., … & Baker, W. J. (2018). Taxonomy based on science is necessary for global conservation. PLoS biology16(3).

Bystriakova, N, T. Griswold, J. S. Ascher, M. Kuhlmann. 2018. Key environmental determinants of the global and regional richness patterns of a wild bee subfamily. Biodiversity and Conservation 27(2): 287-309.


Drummond, F. A, A. C. Dibble, C. Stubbs, S. L. Bushmann, J. S. Ascher, J. Ryan. 2017. A Natural History of Change in Native Bees Associated with Lowbush Blueberry in Maine. Northeastern Naturalist 24(m15): 49-68.

Dibble, A. C., F. A. Drummond, C. Stubbs, S. L. Bushmann, M. Veit, J. S. Ascher. 2017. Bees of Maine, with a state species checklist. Northeastern Naturalist 24(m15):

Ascher, J. S., M. S. Engel. 2017. A new species of Mermiglossa from Kenya, with comments on the arrangement of Old World Panurginae (Hymenoptera: Andrenidae). Journal of Melittology 75: 1-11.

Gibbs, J., J. S. Ascher, M. G. Rightmyer, R. Isaacs. 2017. The bees of Michigan (Hymenoptera: Apoidea: Anthophila), with notes on distribution, taxonomy, pollination, and natural history. Zootaxa 4352(1): 1-160.

Hung, K.-L. J., J. S. Ascher, and D. A. Holway. 2017. Urbanization-induced habitat fragmentation erodes multiple components of temporal diversity in a Southern California native bee assemblage. PLoS ONE 12(8): e0184136. [30 Aug 2017]

Oliveira, U., B. S. Soares-Filho, A. P. Paglia, A. D. Brescovit, C. J. B. Carvalho, D. P. Silva, D. T. Rezende, F. S. F. Leite, J. A. N. Batista, J. P. P. P. Barbosa, J. R. Stehmann, J. S. Ascher, M. F. Vasconcelos, P. Marco, P. Löwenberg-Neto, V. G. Ferro, A. J. Santos. 2017. Biodiversity conservation gaps in the Brazilian protected areas. Scientific Reports 7(1): 9141: doi:10.1038/s41598-017-08707-2

Genung, M., J. Fox, N. M. Williams, C. Kremen, J. S. Ascher, J. Gibbs, R. Winfree. 2017. The relative importance of pollinator abundance and species richness for the temporal variance of pollination services. Ecology 98(7): 1807-1816.

Martins, K. T., É. Normandin, and J. S. Ascher. 2017. Hylaeus communis (Hymenoptera: Colletidae), a new exotic bee for North America with generalist foraging and habitat preferences. Canadian Entomologist 149(3): 377-390. [Jun 2017]


MacLeod, M., M. Genung, J. S. Ascher, R. Winfree. 2016. Measuring partner choice in plant–pollinator networks: Using null models to separate rewiring and fidelity from chance. Ecology 91(11): 2925–2931. [Nov 2016]

Oliveira, U., A. Paglia, A. D. Brescovit, C. J. B. de Carvalho, D. P. Silva, D. T. Rezende, F. S. F. Leite, J. A. N. Batista, J. P. P. P. Barbosa, J. R. Stehmann, J. S. Ascher, M. F. de Vasconcelos, P. De Marco, Jr., P. Löwenberg-Neto, P. G. Dias, V. G. Ferro, A. J. Santos. 2016. The strong influence of collection bias on biodiversity knowledge shortfalls of Brazilian terrestrial biodiversity. Diversity and Distributions 22(12):1232–1244. [Dec 2016]

Rozen, J. G., Jr., J. S. Ascher, S. M. Kamel, and K. M. Mohamed. 2016. Larval diversity in the bee genus Megachile (Hymenoptera: Apoidea: Megachilidae). American Museum Novitates 3863: 1-16.

Soh, E. J. Y., Z. W. W. Soh, S. X. Chui, and J. S. Ascher. 2016. The bee tribe Anthidiini in Singapore (Anthophila: Megachilidae: Anthidiini) with notes on the regional fauna. Nature in Singapore. Nature in Singapore 9: 49-62.

Zarrillo, T. A., J. S. Ascher, J. Gibbs, and K. A. Stoner. 2016. New and noteworthy records of bees (Hymenoptera: Apoidea: Anthophila) for Connecticut. Journal of Kansas Entomological Society. 89(2) 138-157.

Ascher, J. S., Heang, P., Kheam, S., Ly, K., Lorn, S., Chui S. X., De Greef, S., Chartier, G., and S. Phauk. 2016. A report on the bees (Hymenoptera: Apoidea: Anthophila) of Cambodia. Cambodian Journal of Natural History 2016(1): 23-39.

Niu, Z.-Q., J. S. Ascher, A-R. Luo, T. Griswold, & C.-D. Zhu. 2016. Revision of the Anthidiellum Cockerell, 1904 of China (Hymenoptera, Apoidea, Megachilidae, Anthidiini). Zootaxa 4127a(2): 327-344.

Ascher J. S., S. Risch, Z. W. W. Soh, J. X. Q. Lee, and E. J. Y. Soh. 2016. Megachile leaf-cutter and resin bees of Singapore (Hymenoptera: Apoidea: Megachilidae) Raffles Bulletin of Zoology (Supplement) 32: 33-55.

Cariveau, D., G. K. Nayak, I. Bartomeus, J. Zientek, J. S. Ascher, and R. Winfree. 2016. The allometry of bee proboscis length and its uses in ecology. PLoS ONE 11(3): e0151482 [1-13].

Goldstein, P. Z., and J. S. Ascher. 2016. Taxonomic and behavioral composition of an island fauna: a survey of bees (Hymenoptera: Apoidea: Anthophila) on Martha’s Vineyard (Dukes County, Massachusetts, USA). Proceedings of the Entomological Society of Washington. 118(1):  37-92.

Hall, H. G., D. T. Almquist, and J. S. Ascher. 2016. A new Colletes (Hymenoptera: Apoidea: Colletidae) species from northern Florida and Georgia, with notes on the Colletes of those states. Journal of Melittology. No. 58: 1-20.


Silva, D. P., A. C. B. A. Macêdo, J. S. Ascher, and P. De Marco, Jr. 2015. Range increase of a neotropical orchid bee under future scenarios of climate change. Journal of Insect Conservation 19(5): 901-910.

Kleijn, D., R. Winfree, I. Bartomeus, L. G. Carvalheiro, M. Henry, R. Isaacs, A.-M. Klein,C. Kremen, L. K. M’Gonigle, R. Rader, T. H. Ricketts, N. M. Williams, N. L. Adamson, J. S. Ascher, A. Báldi, P. Batáry, F. Benjamin, J. C. Biesmeijer, E. J. Blitzer, R. Bommarco, et al. 2015. Delivery of crop pollination services is an insufficient argument for wild pollinator conservation. Nature Communications 6(7414): 1-8.

Ostaff, D. P., J. S. Ascher, S. Javorek, and A. Mosseler. New records of Andrena (Hymenoptera: Andrenidae) in New Brunswick, Canada. Journal of the Acadian Entomological Society 11: 5-8.

Rasmussen, C., and J. S. Ascher. 2015. Addendum to: Joseph Vachal (1838–1911): French entomologist and politician (Zootaxa, 3442, 1–52) Zootaxa 3931: 298-300.

Gezon, Z. J., E. S. Wyman, J. S. Ascher, D, W, Inouye, R. E. Irwin. 2015. The effect of repeated, lethal sampling on wild bee abundance and diversity. Methods in Ecology and Evolution 6(9): 1044–1054.

Ostaff, D. P., A. Mosseler, R. C. Johns, S. Javorek, J. Klymko, and J. S Ascher. 2015. Willows (Salix spp.) as pollen and nectar sources for sustaining fruit and berry pollinating insects. Canadian Journal of Plant Science: 95(3): 505-516.

Hung, K.-l. J., J. S. Ascher, J. Gibbs, R. E. Irwin, and D. T. Bolger. 2015. Effects of fragmentation on a distinctive coastal sage scrub bee fauna revealed through incidental captures by pitfall traps.  Journal of Insect Conservation 19: 175-179.


Wagner, D. L. and J. S. Ascher. 2014. In remembrance of Gerald Irving Stage (June 26, 1935-January 23, 2014). Journal of the Kansas Entomological Society 87(3): 318-323.

Ascher, J. S., S. Kornbluth, and R. G. Goelet. 2014. Bees (Hymenoptera: Apoidea: Anthophila) of Gardiners Island, Suffolk County, New York. Northeastern Naturalist 21(1): 47-71.

Wagner, D. L., J. S. Ascher, and N. K. Bricker. 2014. A transmission right-of-way as habitat for wild bees (Hymenoptera: Apoidea: Anthophila) in Connecticut. Annals of the Entomological Society of America 107(6): 1110-1120.

Hall, H. G. and J. S. Ascher. 2014. The distinctive bee fauna (Hymenoptera:Apoidea: Anthophila) of sandhill habitat at the Ordway-Swisher Biological Station in north-central Florida. Journal of the Kansas Entomological Society 87(1):1-21.

Ksiazek, K., R. Tonietto, and J. S. Ascher. 2014. Ten bee species new to green roofs in the Chicago Area. Great Lakes Entomologist 47(1-2): 87-92


Bartomeus, I., J. S. Ascher, J. Gibbs, B. N. Danforth, D. L. Wagner, S. M. Hedtke, and R. Winfree. 2013. Historical changes in northeastern United States bee pollinators related to shared ecological traits. Proceedings of the National Academy of Sciences (USA) 110: 4656-4660.


Ascher, J. S. and M. S. Engel. 2012. Discovery of the bee genus Perdita in the West Indies: a new species from Isla Cabritos in the Dominican Republic. Acta Entomologica Musei Nationalis Pragae 52(2). 595-602.

Gonzalez, V. H., J. S. Ascher, and M. S. Engel. 2012. A new Stelis (Dolichostelis) from northern Colombia (Hymenoptera: Megachilidae): first records for South America and a synopsis of the bee fauna from the Caribbean region of Colombia. Journal of Natural History 46(47-48): 2919-2934.

Ascher[“Asher” sic], J. S. and S. K. Javorek. 2012. Bees (Hymenoptera: Apoidea) of the Chiquibul Forest. Pp. 281-282 in S. Bridgewater (Ed.) A natural history of Belize: Inside the Maya Forest. The Natural History Museum, London, UK.

Colla, S. R., J. S. Ascher, M. Arduser, J. Cane, M. Deyrup, S. Droege, J. Gibbs, T. Griswold, H. G. Hall, J. Neff, R. P. Jean, M. G. Rightmyer, C. Sheffield, M. Veit, A. Wolf. 2012. Documenting persistence of most eastern North American bee species (Hymenoptera: Apoidea: Anthophila) to 1990-2009. Journal of the Kansas Entomological Society 85(1):14-22.


Bartomeus, I.,  J. S. Ascher, D. L. Wagner, B. N. Danforth, S. R. Colla, S. Kornbluth, and R. Winfree. 2011. Climate-associated phenological advances in bee pollinators and bee-pollinated plants. Proceedings of the National Academy of Sciences (USA) 108(51) 20645-20649.

Rightmyer, M. G., M. A. Deyrup, J. S. Ascher, and T. L. Griswold. 2011. Osmia species (Hymenoptera, Megachilidae) from the southeastern United States with modified facial hairs: taxonomy, host plants, and conservation status. ZooKeys 148:257-278.

Hall, H. G., and J. S. Ascher. 2011. Surveys of wild bees (Hymenoptera: Apoidea: Anthophila) in organic farms of Alachua County in north-central Florida. Florida Entomologist 94: 539-552.

Kuhlmann, M., and J. S. Ascher. 2011[“2010”]. Two new synonymies of eastern North American Colletes Latr. species described from Japan (Hymenoptera: Colletidae). Entomological News 121(4): 325-328.

Scott, V. L., J. S. Ascher, T. L. Griswold, and C. R. Nufio. 2011. The Bees of Colorado (Hymenoptera: Apoidea: Anthophila). Natural History Inventory of Colorado 23. vi + 100 pp.

Tonietto, R. [K.], J. B. Fant, J. [S.] Ascher, K. E. Ellis, D. J. Larkin. 2011. A comparison             of bee communities of Chicago green roofs, parks and prairies. Landscape and Urban Planning 103(1): 102-108.

Watson, J. C., A. T. Wolf, and J. S. Ascher. 2011. Forested landscapes promote richness and abundance of native bees (Hymenoptera: Apoidea: Anthophila) in Wisconsin apple orchards. Environmental Entomology 40(3):621-632.


Schuh, R. T., Hewson-Smith, S., and J. S. Ascher. 2010. Specimen databases: a case study in entomology using web-based software. American Entomologist 56(4): 206-216.

Hall, H. G., and J. S. Ascher. 2010. Surveys of bees (Hymenoptera: Apoidea: Anthophila) in natural areas of Alachua County in north-central Florida. Florida Entomologist 93(4): 609-629.

Vallely, A. C., R. J. Gallardo, and J. S. Ascher. 2010. Notes on the birds of the Río Plátano   Biosphere Reserve, including four new species for Honduras. Bulletin of the British Ornithologists’ Club 130(1):52-60.

Rozen, J. G., Jr., H. H. Özbek, J. S. Ascher, C. Sedivy, C. Praz, A. Monfared, and A. Müller. 2010. Nests, petal usage, floral preferences, and immatures of Osmia (Ozbekosmia) avosetta (Megachilidae: Megachilinae: Osmiini), including biological comparisons with other osmiine bees. American Museum Novitates 3680:1-22.

Gardiner, M. A., J. K. Tuell, R. Isaacs, J. Gibbs, J. S. Ascher, and D. A. Landis. 2010. Implications of Three Biofuel Crops for Beneficial Arthropods in Agricultural Landscapes. BioEnergy Research 3:6-19.


Packer L., C. S. Sheffield, J. Gibbs, N. de Silva, L. R. Best, J. [S.] Ascher, R. Ayala, Martins, S. P. M. Roberts, O. Tadauchi, M. Kuhlmann, P. H. Williams, C. Eardley, S, Droege, and T. V. Levchenko. 2009. The campaign to barcode the bees of the world: progress, problems, prognosis. In: Yurrita, CL (Ed), Memorias: VI Congresso Mesoamericano Sobre Abejas Nativas. Universidad de San Carlos de Guatemala, Centro de Estudios Conservacionistas, pp. 178-180.

Wolf, A. T., and J. S. Ascher. 2009. Bees of Wisconsin (Hymenoptera: Apoidea:            Anthophila). The Great Lakes Entomologist 41: 129-168.

Tonietto R. K., and J. S. Ascher. 2009. Occurrence of the Old World bee species Hylaeus hyalinatus, Anthidium manicatum, A. oblongatum, and Megachile sculpturalis, and the native species Coelioxys banksi, Lasioglossum michiganense, and L. zophops in Illinois (Hymenoptera: Apoidea: Colletidae, Halictidae, Megachilidae). The Great Lakes Entomologist 41(1-2): 200-203.

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.

Rozen, J. G., Jr., H. Özbek, J. S. Ascher, and M. G. Rightmyer. 2009. Biology of the bee Hoplitis (Hoplitis) monstrabilis Tkalcü and descriptions of its egg and larva (Megachilidae: Megachilinae: Osmiini). American Museum Novitates 3645: 12

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.


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.

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.

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.

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.

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.

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.


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.

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.

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.


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

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.

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.

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.

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.


Buchmann, S. L., and J. S. Ascher. 2005. The plight of pollinating bees. Bee World 86: 71-74.

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. 3476:1-33.

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.


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.


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.

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.


Ascher, J. S., and S. Patiny. 2002. A new name for the bee subgenus Stenostylus (Hymenoptera: Andrenidae). Entomological News 113: 140.


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.

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.

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.