Stethon LeConte, 1866

Otto, Robert L. & Gruber, Jeffrey P., 2016, Eucnemid larvae of the Nearctic region. Part VI: Descriptions of the fifth instar and prepupal larval stages of Stethon pectorosus LeConte, 1866 (Coleoptera: Eucnemidae: Eucneminae: Mesogenini), with notes on their biology, Insecta Mundi 2016 (474), pp. 1-11 : 2

Genus Stethon LeConte, 1866

Adult Diagnosis. Characters of Mesogenini , with apical margin of frontoclypeal region evenly rounded and less than twice as wide as the distance between antennal sockets; well-developed, basally closed, deep, lateral antennal grooves present; male prothoracic tarsomere I simple, without sex combs; metathoracic coxal plates 1.2–2.5 times wider medially than laterally; last visible ventrite produced; lateral pronotal ridges complete; lateral surfaces of mesothoracic and metathoracic tibiae with setae only; male aedeagus dorsoventrally compressed; basal piece dorsally closed; lateral lobes entire and directed dorsocaudad; median lobe simple, deeply and with separate apical median sclerite either entire or bifid; flagellum simple.