Deltometopus Bonvouloir, 1871

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 : 9

Genus Deltometopus Bonvouloir, 1871

Diversity and distribution. Deltometopus is a small genus consisting of 12 described species distributed in the Neotropical and Nearctic regions. Nine described species are present in the Neotropical region. There are also an indeterminate number of undescribed species present in the Neotropical region. Several species are present in the Nearctic region with Deltometopus amoenicornis (Say) ( Fig. 9–15 ) and Deltometopus ereptus Bonvouloir distributed in eastern North America and southern United States respectively along with Deltometopus baranowskii Muona present in Arizona, New Mexico and Utah.

Diagnosis. Apical margin of frontoclypeal region fairly evenly rounded and more than twice as wide as the base; well developed, apically widened, open lateral antennal grooves present; male prothoracic tarsomere I simple, without sex combs; metathoracic coxal plates medially 1.2–2.5 times wider than laterally; frons simple; last visible ventrite either rounded or acute; simple tarsal claws; lateral surfaces of mesothoracic and metathoracic tibiae either with setae only or with setae and irregularly placed spines; male aedeagus dorsoventrally compressed, with laterally attached secondary lateral lobes; median lobe simple, moderately and narrowly bifurcate apically; lateral lobes simple, entire; aedeagal flagellum simple ( Muona 1993, 2011).

Figures

Figures 9–15. Deltometopus amoenicornis (Say). 9) Male, dorsal habitus. 10) Male, ventral habitus. 11) Female, dorsal habitus. 12) Female, ventral habitus. 13) Male, antenna. 14) Female, antenna. 15) Male, aedeagus. (Scale: 9–14 = 0.5 mm; 15 = no scale)