Xylocopa varians ecuadorica Cockerell, 1909:403, ♀. ♀, Guayaquil, Ecuador (British Museum, 96.119); Villamizar et al., 2020Villamizar, G., F. Fernández & F. Vivallo 2020. Synopsis of the carpenter bee subgenus Xylocopa (Schonnherria) Lepeletier, 1841 (Hymenoptera: Apidae) in Colombia, with designation of lectotypes and the description of two new species. Zootaxa 4789 (2):301-347.:312, Syntype ♀ (NHMUK). - Cockerell, 1912Cockerell, T.D.A. 1912. Descriptions and records of bees. - XLVII. The Annals and Magazine of Natural History ser. 8: v. 10 (59):484-494. (distribution); Cockerell, 1919Cockerell, T.D.A. 1919. Bees in the collection of the United States National Museum. Proceedings of the United States National Museum 55 (2264):167-221. (distribution); Ospina, 2000Ospina, M. 2000. Abejas carpinteras (Hymenoptera: Apidae: Xylocopinae: Xylocopini) de la región Neotropical. Biota Colombiana 1 (3):239-252. (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). - As Xylocopa ecuadorica: - Gonzalez et al., 2009Gonzalez, V.H., M.M. Gonzalez & Y. Cuellar 2009. Notas biológicas y taxonómicas sobre los abejorros del maracuyá del género Xylocopa (Hymenoptera: Apidae, Xylocopini) en Colombia. Acta biol. Colomb. 14 (2):31-40. (distribution); Villamizar et al., 2020Villamizar, G., F. Fernández & F. Vivallo 2020. Synopsis of the carpenter bee subgenus Xylocopa (Schonnherria) Lepeletier, 1841 (Hymenoptera: Apidae) in Colombia, with designation of lectotypes and the description of two new species. Zootaxa 4789 (2):301-347. (distribution).
Xylocopa trautmanni Dusmet-Alonso, 1924:55, Villamizar et al., 2020Villamizar, G., F. Fernández & F. Vivallo 2020. Synopsis of the carpenter bee subgenus Xylocopa (Schonnherria) Lepeletier, 1841 (Hymenoptera: Apidae) in Colombia, with designation of lectotypes and the description of two new species. Zootaxa 4789 (2):301-347.:312, Holotype ♂ (MNCN). - Villamizar et al., 2020Villamizar, G., F. Fernández & F. Vivallo 2020. Synopsis of the carpenter bee subgenus Xylocopa (Schonnherria) Lepeletier, 1841 (Hymenoptera: Apidae) in Colombia, with designation of lectotypes and the description of two new species. Zootaxa 4789 (2):301-347.:310 ( listed as synonym of Xylocopa ecuadorica Cockerell, 1909).
Xylocopa varians rufotegularis Michener, 1954:157, ♂♀. Allotype ♂, Colón Province: Porto Bello trail, January 10 to 15 (leg. Hallinan); Holotype ♀, Canal Zone: Culebra-Arraiján trail, December 13 to 14 (leg. Hallinan); Villamizar et al., 2020Villamizar, G., F. Fernández & F. Vivallo 2020. Synopsis of the carpenter bee subgenus Xylocopa (Schonnherria) Lepeletier, 1841 (Hymenoptera: Apidae) in Colombia, with designation of lectotypes and the description of two new species. Zootaxa 4789 (2):301-347.:312, Holotype ♀ (AMNH). - Villamizar et al., 2020Villamizar, G., F. Fernández & F. Vivallo 2020. Synopsis of the carpenter bee subgenus Xylocopa (Schonnherria) Lepeletier, 1841 (Hymenoptera: Apidae) in Colombia, with designation of lectotypes and the description of two new species. Zootaxa 4789 (2):301-347.:310 ( listed as synonym of Xylocopa ecuadorica Cockerell, 1909).