Nematodes Berthold, 1827

Otto, Robert L., 2017, Descriptions of six new species of false click beetles (Coleoptera: Eucnemidae: Macraulacinae), with new identification keys for one tribe and two genera, Insecta Mundi 2017 (558), pp. 1-19 : 8

Genus Nematodes Berthold, 1827

Diversity and Distribution. Nematodes is a moderately large group consisting of 39 species primarily distributed in the Neotropical region. Four species are distributed in eastern North America. Twentytwo species are found in the Neotropical region, including the Caribbean Islands. One species occurs in much of Europe and Russia. Two species are distributed along the eastern coastline of the Australian continent. Nine species are represented in Southeast Asia, including Japan. The new species represents the first record for the group on the African continent.

Diagnosis. Frontolclypeal region subtriangular, apically trilobed, apically more than 2.0 times wider than the distance between antennal sockets. Lateral pronotal ridge entire; disc convex with pair of small circular foveae; base sinuous. Elytral disc with indistinct striae, except near suture; humeral region moderately striate; interstices flattened. First prothoracic tarsi with curved basal sex combs in males; lateral side of mesothoracic and metathoracic tibiae with hairs and transverse rows of spines; tarsi with simple claws. Notosternal suture as long as the hypomeral base; hypomeron simple, without lateral antennal grooves; metathoracic episterna parallel-sided; metathoracic coxal plate medially 3.0–6.0 times wider than laterally; last visible ventrite forming a strongly produced beak; male aedeagus dorsoventrally compressed, with laterally attached secondary lateral lobes; median lobe simple, with moderately and narrowly bifurcate apices; lateral lobes simple, entire; flagellum simple.