Trigonopleurus Bonvouloir, 1871

Otto, Robert L., 2024, Two new species of false click beetles (Coleoptera: Eucnemidae) from the Americas, Insecta Mundi 2024 (27), pp. 1-9 : 5

Genus Trigonopleurus Bonvouloir, 1871

Diagnosis. Apical margin of frontoclypeal region feebly trilobed and more than twice as wide as the base; antennal grooves absent; male protarsomere I simple with basally curved sex combs; tarsal claws simple; tarsomere IV excavate-emarginate; metathoracic coxal plates medially 3.0–6.0 times wider than laterally; last visible ventrite strongly produced; lateral surfaces of mesothoracic and metathoracic tibiae with setae and transverse rows of spine combs; metathoracic episterna apically widened slightly; aedeagus dorsoventrally compressed, without secondary lateral lobes; median lobe simple, with moderately and narrowly bifurcate apices; lateral lobes simple, entire; flagellum simple ( Muona 1993).

Diversity. Trigonopleurus is a small genus now consisting of three species. Trigonopleurus alienus Horn has been taken in both Nicaragua and Panama and may also be present in Costa Rica. Trigonopleurus rugulosus Bonvouloir is present on the Australian continent. The new species is present at a single locale in east central Louisiana, USA and also in Guatemala.