The phylogeny of Opoptera butterflies, and an assessment of the systematic position of O. staudingeri (Lepidoptera, Nymphalidae) Author Penz, Carla M. text Zootaxa 2009 1985 1 20 journal article 10.5281/zenodo.185409 1e8adb1d-85ac-48e8-98ba-42355c1d777a 1175-5326 185409 Opoptera staudingeri (Godman & Salvin, 1894) ( Fig. 1 F, 2F, 4F, 5F, 5I , 6F) Type locality. Panama . Diagnosis. Male FW length 46 mm (based on specimen in Appendix 1). FW apex slightly pointed and HW margin smooth. Wings with orange-brown background. FW with a conspicuous orange postmedial band that has a narrow proximal arm, and a reduced distal arm that is barely visible inside cells M2 and M1. HW with a well-developed orange marginal band. HW outline slightly bulging below M3, which is particularly obvious in the female in Fig. 2 F. Males lack a thin hairpencil inside HW discal cell, but have a scent-pocket. Females similar to, but paler than males. Overall gestalt similar to species of Catoblepia . Unique genitalic characters include: dorsal outline of tegumen flat in lateral view; twisted valvae; and sterigma with two large, lateral, folded over projections with jagged edges and minute spines. Distribution. Panama , Costa Rica to Mexico ( Fruhstorfer 1912 , Maza & Maza 1989 , Casagrande 2004 ). Remarks. Casagrande (2004) lists two subspecies; the nominal staudingeri from Panama , plus mexicana Maza & Maza from Mexico (not available for examination). Opoptera staudingeri is the only species of the genus for which a description of early stages has been published ( DeVries 1987 ).