Scientific Name: Triepeolus texanus (Cresson, 1878)
Common Name: Triepeolus texanus
Epeolus texanus Cresson, 1878: 87 
Lectotype m [designated by Cresson 1916: 132]. USA, Texas [ANSP no. 2223]
Triepeolus wyomingensis Cockerell, 1905: 201 [♂‚] [synonymy by Rightmyer 2008: 121]
Holotype ♂‚. USA, Wyoming, received from J.H. Lovell [USNM no. 100040]
Triepeolus Eldredi Cockerell, 1907: 52 [♂‚] [synonymy by Rightmyer 2008: 121]
Holotype ♂‚: USA, Washington, N. Yakima, 7 August 1903, by E. Jenne [USNM no. 100029]
Triepeolus helianthi grandior Cockerell, 1919: 300 [♂‚,♀] [synonymy by Rightmyer 2008: 121]
Holotype ♂‚. USA, Colorado, Florissant, 29 July , by S.A. Rohwer, on Cirsium acaulescens [USNM no. 100030]
Triepeolus rectangularis Cockerell, 1921: 9 [♀,♂‚] [synonymy by Rightmyer 2008: 121]
Holotype ♀. USA, Utah, Huntsville, near Ogden, 26 July 1920 [AMNH no. 25091].
Triepeolus dichropus Cockerell, 1921: 11 [♂‚] [synonymy by Rightmyer 2008: 121]
Holotype ♂‚. USA, Colorado, Glenwood Springs, about 5800 ft., at the edge of town, 29 July 1919, by H.F. Schwarz [AMNH no. 25094].
Triepeolus pallidiventris Cockerell and Sandhouse, 1924: 308 [♂‚] [synonymy by Rightmyer 2008: 121]
Holotype ♂‚. USA, Utah, Vivian Park, 7 July 1922, by E.P. Van Duzee [CAS no. 1600]
The DNA Barcode Index Number (BIN) for this species is .
Clement (1973) recorded this species attacking nests of Melissodes (Eumelissodes) druriella (Kirby) [as M. rustica (Say) based on finding larvae in the nest, and later (Clement 1984) observed adults of the cuckoo entering their nests). Rightmyer (2008) also menions a single specimen of T. texanus recorded from the nesting site of Nomia melanderi Cockerell in Benson Ward, Utah.
♀ body length: mm; head length: mm; head width: mm; forewing length: mm
♂‚ body length: mm; head length: mm; head width: mm; forewing length: mm
Extent of Occurrence (EOO) in Canada (http://geocat.kew.org/): N/A [known from one site]
Approximate Global Extent of Occurrence (EOO) (http://geocat.kew.org/): km2
Index of Area of Occupancy (IAO) in Canada (http://geocat.kew.org/): km2
Clement SL (1973) The nesting biology of Melissodes (Eumelissodes) rustica (Say), with a description of the larva (Hymenoptera: Anthophoridae). Journal of the Kansas Entomological Society 46: 516–525.
Clement SL (1984) Observations on the behavior of Triepeolus nr. eldredi Cockerell (Hymenoptera: Anthophoridae). The Pan-Pacific Entomologist 60: 300–303.
Cockerell TDA (1905) XXII.—American Hymenoptera: new bees and a new proctotrypid. Annals and Magazine of Natural History Series 7, 15(86): 200-204. https://doi.org/10.1080/03745480509442824
Cockerell TDA (1907) Two new bees of the genus Triepeolus. The Canadian Entomologist 39(2): 51–52. https://doi.org/10.4039/Ent3951-2
Cockerell TDA (1919) The bees of Peaceful Valley, Colorado. Journal of the New York Entomological Society 27(4): 298–300. http://www.jstor.org/stable/25003869
Cockerell TDA (1921) The epeoline bees of the American Museum Rocky Mountain expeditions. American Museum Novitates 23: 1–16.
Cresson, ET (1878) Descriptions of new North American Hymenoptera in the collection of the American Entomological Society. Transactions of the American Entomological Society 7: 61–136.
Cockerell TDA, Sandhouse G (1924) Parasitic bees (Epeolinae and Melectinae) in the collection of the California Academy of Sciences. Proceedings of the California Academy of Sciences 13: 305–324.
Rightmyer MG (2008) A review of the bee genus Triepeolus (Hymenoptera: Apidae).—Part I. Zootaxa 1710: 1-170.
Pollen Specialization: Not Applicable
Distribution: British Columbia
Ecozone: Western Interior Basin