Lycocerus chongqingensis Y. Yang, Wang & Liu sp. nov.

Figs 10A-C, 15A, 17E, 20A, B

Type material.

Holotype: ♂ (MHBU), China, Chongqing, Nanchuan, Jinfoshan, 23-24.VII.2003, leg. Y. S. Liu & C. X. Yuan. Paratypes: 1♂2♀ (MHBU), same data as holotype.

Diagnosis.

The new species seems most similar to L. centrochinensis in both coloration and characteristics of tarsal claws, but differs in the following characters: body size is smaller; aedeagus: dorsal plates of parameres with inner margins feebly protuberant near base (Fig. 10B); abdominal sternite VIII (Fig. 17E) moderately narrowed posteriorly, the portion between lateral and middle emarginations rounded at apices, which slightly extending over apices of latero-apical angles. In comparison, L. centrochinensis has larger body; aedeagus: dorsal plates of parameres with inner margins abruptly diverging near middle (Fig. 3E); abdominal sternite VIII (Fig. 16B) strongly narrowed posteriorly, the portion between lateral and middle emarginations triangular at apices, which distinctly extending over apices of latero-apical angles.

Description.

Male (Fig. 20A). Head, prothorax, scutellum and legs orange, mandibles dark brown at apices, antennomeres III-XI black, elytra pale yellow, legs darkened at tarsi, meso- and metasterna and abdomen black. Body densely covered with pale yellow recumbent pubescence.

Head feebly narrowed behind eyes, surface densely and finely punctate; eyes moderately large and protruding, head width across eyes wider than anterior margin of pronotum; antennae filiform, extending to apical third of elytra when reclined, antennomere II shortest, ~ 2 × longer than wide at apex, III-IV feebly expanded at apex, IV-X each with a short smooth impression near apical part of outer margin, V-XI nearly parallel-sided, VIII longest.

Pronotum subquadrate, feebly longer than wide, anterior margin feebly arcuate, lateral margins subparallel, posterior margin nearly straight, anterior angles obtuse-rounded, posterior angles nearly right-angled, disc convex on posterolateral parts, surface finely and feebly sparsely punctate than that on head.

Elytra ~ 4.6 × longer than pronotum, 3.3 × longer than width across humeri, outer margins nearly parallel, disc semi-lustrous, coarsely and densely punctate.

Legs slender, all claws simple.

Aedeagus: basal piece nearly as long as dorsal plate of each paramere (Fig. 10A-C); ventral process of each paramere slender and feebly bent inwards and approaching to each other in ventral view (Fig. 10A), inclining ventrally in lateral view (Fig. 10C); dorsal plates of parameres obviously longer than ventral processes (Fig. 10A, C), with inner margins nearly parallel, feebly triangularly protuberant near base, outer margins slightly converging apically, apical margins slightly descending outwards, inner and outer apical angles rounded in dorsal view (Fig. 10B); laterophyse nearly as long as ventral process, with apices acute and directing dorso-outwards (Fig. 10A, C).

Female (Fig. 20B). Similar to the males, but eyes less protruding, antennae shorter, not reaching elytral mid-length when reclined, middle antennomeres without impressions, pronotum nearly as long as wide, fore and middle legs with a digitiform tooth on each anterior and posterior claw.

Internal organ of reproductive system (Fig. 15A): spermatheca nearly as long as diverticulum; accessory gland ~ 2.2 × longer than spermatheca.

Abdominal sternite VIII (Fig. 17E): hardly emarginate in middle and subrounded emarginations on both sides of posterior margin, lateral emarginations obviously deeper than the middle one, the portion between lateral and middle emarginations wide and rounded at apices, slightly extending over apices of latero-apical angles, which are truncated.

Body length: 7.8-9.0 mm (8.0 mm in holotype); width: 1.7-2.1 mm (1.8 mm in holotype).

Distribution.

China (Chongqing).

Etymology.

The specific name is derived from the type locality, Chongqing, China.