Nemésio, A. and Ferrari, R. R. (2012) “The species of Eulaema (Eulaema) Lepeletier, 1841 (Hymenoptera: Apidae: Euglossina) from eastern Brazil, with description of Eulaema quadragintanovem sp. n. from the state of Ceará”, Zootaxa. Auckland, New Zealand, 3478(1), pp. 123–132. doi: 10.11646/zootaxa.3478.1.15.