Abstract
This study provides a species-level phylogeny for the Neotropical brassoline genus Opoptera Aurivillius based on 37 morphological characters. A revised generic definition is given, and two species groups are supported. The syme-group includes three species from the Brazilian Atlantic forest. The aorsa-group includes O. staudingeri (Godman & Salvin) from Central America, three species from western and northern South America, and one species from the Atlantic forest. Two subspecies are elevated to species status: O. hilaris Stichel, NEW STATUS and O. bracteolata Stichel, NEW STA- TUS. Two new combinations are proposed: O. hilaris fuscata Stichel, NEW COMBINATION and O. hilaris colombiana Rothshild, NEW COMBINATION. Diagnoses and illustrations of habitus and genitalia are provided for the eight recognized Opoptera species. Wing color, male scent organs, and male and female genitalic morphology are described and discussed.References
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