Isorhipis Boisduval and Lacordaire, 1835

Otto, Robert L., 2024, Three additions to the false click beetle (Coleoptera: Elateroidea: Eucnemidae) fauna in the Nearctic region, Insecta Mundi 2024 (47), pp. 1-14 : 3

Genus Isorhipis Boisduval and Lacordaire, 1835

(= Tharops Laporte, 1835 ; not Huber 1819)

Diversity and distribution. Isorhipis is a small genus consisting of 18 species distributed world-wide, with the majority of the species found in the Holarctic region with radiations into the tropics. Five species are present in the Nearctic region. Four species are present in the Neotropical region, including the Antilles. The remaining nine species, including two extinct Miocene species in Baltic amber, are present in the Palearctic region.

Diagnosis. Apical margin of frontoclypeal region fairly rounded and less than twice as wide as the base; antennal grooves absent; metathoracic coxal plate medially 3.0–6.0 times wider than laterally; last visible ventrite strongly produced, often exposed beyond elytral apices; tibiae rounded; tarsal claws simple; lateral surfaces of mesothoracic and metathoracic tibiae with setae only; pygidial keel on tergite VII variable; male aedeagus dorsoventrally compressed, without secondary lateral lobes; median lobe simple, usually pointed apically; lateral lobes simple, entire; aedeagal flagellum simple ( Muona 1993, 2011).