Hylaeosoma Ashmeadi Crawford, 1906:161, ♀. Holotype ♀, San Jose, June 14th, 1903 (National Museum, leg. Crawford); Michener, 2002Michener, C.D. 2002. The bee genus Chilicola in the Tropical Andes, with observations on nesting biology and a phylogenetic analysis of the subgenera (Hymenoptera: Colletidae, Xeromelissinae). Scientific Papers, Natural History Museum, The University of Kansas 26:1-47.:11, Type (Washington). - Friese, 1916Friese, H. 1916. Zur Bienenfauna von Costa Rica. Stettiner Entomologische Zeitung 77:287-348. (distribution). - As Chilicola ashmeadi: - Toro & Michener, 1975Toro, H. & C.D. Michener 1975. The Subfamily Xeromelissinae and its occurrence in Mexico (Hymenoptera: Colletidae). Journal of the Kansas Entomological Society 48 (3):351-357. (distribution); Maes, 1993Maes, J.-M. 1993. Catalogo de los Apoidea (Hymenoptera) de Nicaragua. Revista Nicaraguense de Entomologia 26:11-30. (distribution); Michener, 2000Michener, C.D. 2000. The Bees of the World. The John Hopkins University Press, Baltimore and London. 1-913. (distribution); Michener, 2002Michener, C.D. 2002. The bee genus Chilicola in the Tropical Andes, with observations on nesting biology and a phylogenetic analysis of the subgenera (Hymenoptera: Colletidae, Xeromelissinae). Scientific Papers, Natural History Museum, The University of Kansas 26:1-47. (distribution); Moure & Urban, 2002Moure, J.S. & D. Urban 2002. Catálogo de Apoidea de Região Neotropical (Hymenoptera, Colletidae). V. Xeromelissinae. Revista Brasileira de Entomologia 19 (Supl. 1):1-25. (distribution); Smith-Pardo, 2003Smith-Pardo, A.H. 2003. A preliminary account of the bees of Colombia (Hymenoptera: Apoidea): present knowledge and future directions. Journal of the Kansas Entomological Society 76 (2):335-341. (distribution); Yáñez-Ordóñez & Hinojosa-Díaz, 2004Yáñez-Ordóñez, O. & I. Hinojosa-Díaz 2004. La colección himenopterológica (Insecta) del Museo de Zoología Alfonso L. Herrera de la Facultad de Ciencias, UNAM, México. Acta Zoológica Mexicana (nueva serie) 20 (1):167-197. (distribution); Sagot et al., 2018Sagot, P, J. Mérida, R. Ayala & R. Vandame 2018. Situación actual del conocimiento de la fauna de abejas (Apoidea: Anthophila) del estado de Chiapas, México. In: (Ed.). Memorias X Congreso Mesoamericano sobre Abejas Nativas. 191-2011. (distribution); Nava-Bolaños & Osorio-Olvera, 2022Nava-Bolaños, A. & L. Osorio-Olvera 2022. Estado del arte del conocimiento de biodiversidad de los polinizadores de México. Revista Mexicana de Biodiversidad 93:1-77. (distribution).
Oediscelis costaricensis Friese, 1916:302, ♂♀. 2 ♂♂, 8 ♀♀, San José (leg. Schmidt); Michener, 2002Michener, C.D. 2002. The bee genus Chilicola in the Tropical Andes, with observations on nesting biology and a phylogenetic analysis of the subgenera (Hymenoptera: Colletidae, Xeromelissinae). Scientific Papers, Natural History Museum, The University of Kansas 26:1-47.:11, Type (Berlin). - Michener, 2002Michener, C.D. 2002. The bee genus Chilicola in the Tropical Andes, with observations on nesting biology and a phylogenetic analysis of the subgenera (Hymenoptera: Colletidae, Xeromelissinae). Scientific Papers, Natural History Museum, The University of Kansas 26:1-47.:11 ( listed as synonym of Chilicola ashmeadi (Crawford, 1906)); Moure & Urban, 2002Moure, J.S. & D. Urban 2002. Catálogo de Apoidea de Região Neotropical (Hymenoptera, Colletidae). V. Xeromelissinae. Revista Brasileira de Entomologia 19 (Supl. 1):1-25.:4 ( listed as synonym of Chilicola ashmeadi (Crawford, 1906)).
Prosopis howardiella Cockerell, 1918:423, ♂. ♂, Oaxaca, Mexico, April 30 (U.S. Nat. Museum, leg. L.O. Howard); Michener, 2002Michener, C.D. 2002. The bee genus Chilicola in the Tropical Andes, with observations on nesting biology and a phylogenetic analysis of the subgenera (Hymenoptera: Colletidae, Xeromelissinae). Scientific Papers, Natural History Museum, The University of Kansas 26:1-47.:11, Type (Washington). - Michener, 2002Michener, C.D. 2002. The bee genus Chilicola in the Tropical Andes, with observations on nesting biology and a phylogenetic analysis of the subgenera (Hymenoptera: Colletidae, Xeromelissinae). Scientific Papers, Natural History Museum, The University of Kansas 26:1-47.:11 ( listed as synonym of Chilicola ashmeadi (Crawford, 1906)); Moure & Urban, 2002Moure, J.S. & D. Urban 2002. Catálogo de Apoidea de Região Neotropical (Hymenoptera, Colletidae). V. Xeromelissinae. Revista Brasileira de Entomologia 19 (Supl. 1):1-25.:4 ( listed as synonym of Chilicola ashmeadi (Crawford, 1906)). - As Hylaeus howardiellus: - Meade-Waldo, 1923Meade-Waldo, G. 1923. Hymenoptera, fam. Apidae, subfam. Prosopidinae. Genera Insectorum 181:1-45. (distribution).