Megacilissa fulvo-pilosa Cameron, 1903:237, Urban & Moure, 2001Urban, D. & J.S. Moure 2001. Catálogo de Apoidea da Região Neotropical (Hymenoptera, Colletidae). II Diphaglossinae. Revista Brasileira de Entomologia 18 (1):1-34.:16, Syntype ♂ (BMNH); Velez, 2015Velez-Ruiz, R.I. 2015. . Dissertation , , 321 pp.:100, Holotype ♂ (BMNH). - As Ptiloglossa fulvo-pilosa: - Schwarz, 1934Schwarz, H.F. 1934. The solitary bees of Barro Colorado Island, Canal Zone. American Museum Novitates 722:1-24. (distribution). - As Ptiloglossa fulvopilosa: - Michener, 1954Michener, C.D. 1954. Bees of Panamá. Bulletin of the American Museum of Natural History 104 (1):1-176. (distribution); Urban & Moure, 2001Urban, D. & J.S. Moure 2001. Catálogo de Apoidea da Região Neotropical (Hymenoptera, Colletidae). II Diphaglossinae. Revista Brasileira de Entomologia 18 (1):1-34. (distribution); Starr & Hook, 2003Starr, C.K. & Hook, A.W. 2003. The aculeate Hymenoptera of Trinidad, West Indies. Occasional Papers o the Department of Life Sciences, University of the West Indies 12:1-31. (distribution); Velez, 2015Velez-Ruiz, R.I. 2015. . Dissertation , , 321 pp. (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).