Key to genera of Penthimiini

Crown 1.5 times as long as pronotum;
total length of insects at least 6mm; aedeagus shaft bearing lateral processes

Select - Genus Thaumatoscopus Evans

Crown about equal in length to pronotum;
total length of insects up to 5.4mm; aedeagus shaft a simple tube lacking lateral processes

Select - Genus Vulturnus Kirkaldy