Entomophthalmus 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 : 2

Genus Entomophthalmus Bonvouloir, 1871

Fig. 1–12

Diagnosis. Apical margin of frontoclypeal region evenly rounded and more than twice as wide as distance between antennal sockets; compound eyes incised near antennal insertions; combined lengths of antennomeres II and III shorter than that of IV; notosternal antennal grooves present; male prothoracic tarsomere I simple, without sex combs; metathoracic coxal plate medially 3.0–6.0 times wider than laterally; last visible ventrite either rounded, acute or slightly emarginated; simple tarsal claws; lateral surfaces of mesothoracic and metathoracic tibiae with setae only; aedeagus dorsoventrally compressed, without secondary lateral lobes; median lobe simple, deeply and widely bifurcate apically; lateral lobes simple, longitudinally bilobed; flagellum complex; tubular ( Otto 2016).

Entomophthalmus is superficially similar to Brevisegmentus Otto of Southeast Asia and Japan. The combined lengths of the pedicel and flagellomere I being shorter than flagellomere II along with the absence of dorsolateral ridge at the elytral humeri behind the pronotal hind angle will distinguish Entomophthalmus from Brevisegmentus . The combined lengths of both pedicel and flagellomere I being as long as flagellomere II along with the presence of dorsolateral ridge at the elytral humeri behind the pronotal hind angle are present in Brevisegmentus .

Diversity. Entomophthalmus is a moderately sized genus consisting of 24 species, with the majority distributed in the subtropical and tropical regions of the world. Nine species are distributed from Mexico south through South America, including the Caribbean region. Two other species are distributed along the eastern coastline of the Australian continent. Seven species are present in Southeast Asia as far east as the Philippines. Two species, including an unknown Japanese species mentioned by Hisamatsu (1955) are present in the Palearctic region. Four species are found on the African continent. The group is represented by a single species in the Nearctic region.

Figures

Figures 1–6. Entomophthalmus species. 1) Entomophthalmus americanus, dorsal view. 2) Entomophthalmus americanus, ventral view. 3) Entomophthalmus americanus, pronotum, lateral view. 4) Entomophthalmus rufiolus, dorsal view. 5) Entomophthalmus rufiolus, ventral view. 6) Entomophthalmus rufiolus, pronotum, lateral view. (Scale: 3, 6 = 0.5 mm; 1–2, 4–5 = 1.0 mm.)

Figures 7–10. Entomophthalmus abbreviatus Otto, sp. nov. 7) Male holotype, dorsal view. 8) Male holotype, ventral view. 9) Male holotype, antenna. 10) Male holotype, pronotum, lateral view. (Scale: 7–10 = 0.5 mm.)

Figures 11–17. Trigonopleurus cordobaalfaroi Otto, sp. nov. 11) Base of hypomeron. 12) Pronotum, lateral view. 13) Male holotype, dorsal view. 14) Male holotype, ventral view. 15) Male holotype, metaepisterna. 16) Female allotype, dorsal view. 17) Aedeagus (paratype), dorsal view. (Scale: 11–12, 15, 17 = 0.5 mm; 13–14, 16 = 1.0 mm.)