Dictyoptera gansuensis, Kazantsev, Sergey V., 2004

Kazantsev, Sergey V., 2004, Phylogeny of the tribe Erotini (Coleoptera, Lycidae), with descriptions of new taxa, Zootaxa 496, pp. 1-48 : 25-26

Dictyoptera gansuensis sp. n. (Figs. 39–41)

Description

Male. Black. Elytra and margins and carinae of pronotum dark red.

Head slightly excavate behind antennal prominence. Eyes relatively small (interocular distance about 3 times as long as the radius). Maxillary palpi slender, with ultimate palpomere parallel­sided, flattened at apex. Antennae filiform, extending to slightly beyond the middle of elytra, with antennomere 3 subequal in length to antennomere 2 and only slightly wider than it and 2.2 times shorter than antennomere 4; antennomeres 4 to 10 subequal in length; antennomeres 1–3 with decumbent pubescence, antennomeres 4–11 with short erect pubescence.

Pronotum transverse, 1.2 times wider than long, with conspicuous median areola, convex anteriorly and concave posteriorly, connected with side margins by prominent carinae; lateral margins narrowing anteriorly, with hind angles acute, but relatively short. Scutellum elongate, parallel­sided, emarginate at apex.

Elytra relatively long, 2.8 times longer than wide at humeri, slightly widening posteriorly, with 4 conspicuous primary costae; interstices with double rows of relatively irregular mostly square cells. Short and relatively sparse pubescence distributed along costae.

Metatrochanters with acute posterior angles.

Aedeagus robust, with long phallobase (Figs. 39–41).

Length: 9.8 mm. Width (humerally): 2.8 mm.

Female. Unknown.

Diagnosis

D. gansuensis sp. n. is hardly distinguishable from D. aurora externally, but is easily separated from it and all other congeneric species by the shape of its robust aedeagus with its long phallobase (Figs. 39–41) that resembles that of the genus Taphes .

Etymology

amed after the type locality.