Mesolycus nanensis, Kazantsev, Sergey V., 2004

Kazantsev, Sergey V., 2004, Contribution to the knowledge of Macrolycini with description of Calcaeron, new genus (Coleoptera, Lycidae), Zootaxa 493, pp. 1-32 : 20-21

Mesolycus nanensis sp. nov.

( Figs. 44–45 )

Description

Male. Black. Pronotum, scutellum and elytra brick­red.

Head slightly convex and feebly grooved behind antennal prominence. Eyes relatively small (interocular distance about 3 times as long as radius). Palps relatively long, ultimate joint of maxillary palpi cylindrical, flattened and tapering apically and about 1.5 times longer than palpomere 3. Antennae slightly reaching over elytral middle, with antennomere 3 and following antennomeres subequal in length to each other and about 1.3 times longer than scape.

Pronotum slightly transverse, 1.1 times wider than long, trapezoidal, with conspicuous median carina in anterior half; hind angles acuminate and produced latero­posteriorly. Scutellum square, almost parallel­sided, slightly rounded and feebly emarginate at apex.

Elytra very long, 4.25 times longer than wide humerally, parallel­sided, slightly dehiscent behind middle. Dense pubescence short and decumbent.

Metatrochanters with blunt posterior angles.

Aedeagus with prominent inner sac structures ( Figs. 44–45 ). Length: 8.0 mm. Width (humerally): 1.6 mm. Female. Unknown.

Diagnosis

Mesolycus nanensis sp. nov. belongs in the atrorufus group of species, being close to M. vitalisi , from which it differs by the structures of the inner sac ( Figs. 44–45 ).

Etymology

Named after the province in North Thailand, where the species is distributed.

Figures

FIGURES 40 – 47. Aedeagi of Mesolycus. 40 — M. mediozonatus Nakane, ventrally; 41 — same, laterally; 42 — M. hubeicus sp. nov., laterally; 43 — same, inner sac structures, apically; 44 — M. nanensis sp. nov., laterally; 45 — same, inner sac structures, apically; 46 — M. murzini sp. nov., laterally; 47 — same, inner sac structures, apically. UP — upper plate.