Epeoloides pilosulus

{{Short description|Species of bee}}

{{Speciesbox

| image = Epeoloides_pilosula_f.jpg

| taxon = Epeoloides pilosulus

| authority = (Cresson, 1878)

| synonyms =

• Nomada pilosula Cresson, 1878
• Nomia compacta Provancher, 1888
• Epeolus pilosulus Provancher, 1888
• Viereckella obscura Swenk, 1907
• Viereckella ceanothina Cockerell, 1907
• Epeoloides nearcticus Ducke, 1909

}}

Epeoloides pilosulus is one of only two species in the bee genus Epeoloides; it is kleptoparasitic in the nests of melittid bees of the genus Macropis. Known to exist in only a handful of localities in the northeastern United States and adjacent parts of Canada, this species is classified as Endangered by the State of Connecticut.[https://www.ct.gov/deep/lib/deep/wildlife/pdf_files/nongame/ETS15.pdf Connecticut’s Endangered, Threatened and Special Concern Species 2015.] State of Connecticut Department of Environmental Protection Bureau of Natural Resources. 2015. 11 pp.

E. pilosulus lacks the dense patches of appressed scutum hairs of the genera Triepeolus and Epeolus.{{Cite book |last=Droege |first=Sam |url=https://www.usgs.gov/media/files/how-catch-and-identify-bees-and-manage-a-collection |title=The Very Handy Manual: How to Catch and Identify Bees |date=September 2015 |publisher=USGS}} On the wing, the marginal cell and its apex touch the wing margin, but the cell is more abruptly truncated than in other, similar bees.