3531 Author Perkins, Philip D. text Zootaxa 2012 2012-10-30 3531 1 95 journal article 1175­5334 C1FA90AF-1C31-45D6-9CB6-C7D3058E501C Epimetopus panamensis Perkins, 1979 Figs. 34 (habitus), 39 (aedeagus), 143 (map) Epimetopus panamensis Perkins, 1979: 324 . New collection record: Panama : Canal Zone , Barro Colorado , leaf litter, 9° 10' N , 79° 50' W , 19 ii – 9 iii 1975 , Lawrence, Erwin (1 MCZ ) . Differential diagnosis. The habitus of E. panamensis ( Fig. 34 ) is very similar to that of several other members of the Costatus group; reliable determinations will be based on examination of the aedeagus. The aedeagus is somewhat similar to that of E. punctipennis ( Figs. 39 , 62 ); differing therefrom in having a narrower and longer median lobe, a wider and longer basal piece, and wider and differently shaped parameres. The aedeagus of E. panamensis also has a larger striate collar. Externally ( Figs. 34 , 58 ) the two species differ in color ( E. panamensis is brown, E. punctipennis is reddish), and E. panamensis has much smaller elytral punctures and larger elytral granules linking the punctures. Distribution. Currently known only from Panama ( Fig. 143 ).