Review of the species level taxonomy of the neotropical butterfly genus Oenomaus (Lycaenidae, Theclinae, Eumaeini) Author Faynel, Christophe Author Busby, Robert C. Author Robbins, Robert K. text ZooKeys 2012 222 11 45 http://dx.doi.org/10.3897/zookeys.222.3375 journal article http://dx.doi.org/10.3897/zookeys.222.3375 1313-2970-222-11 Oenomaus ambiguus Faynel Distribution, habitat, and remarks. Oenomaus ambiguus is a poorly known, lowland species whose ventral wing pattern is virtually indistinguishable from those of Oenomaus cortica and Oenomaus gaia . It has been recorded from French Guiana and Amazonian Peru. The previous record from Amazonas, Brazil ( Faynel 2008 ) was incorrect. New material examined. French Guiana . 1♂: Bas Maroni, Guyane Francaise , gen. prep. CF n°319 (MNHN H-452). Peru.- 1♂: MD, Rio La Torre, 300 m, Tambopata Res., 27.IX.1987, S.S. Nicolay, gen. prep. CF n°404 (USNM). Female. Unknown. COI DNA sequence. The paratype from Peru has been barcoded (CF-LYC-025), and the sequence is 2-3% divergent from those of Oenomaus cortica , Oenomaus gaia and Oenomaus morroensis (Table 1).