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

Figs 8D-F, 14A, 16E, 18C, D

Type material.

Holotype: ♂ (MHBU), China, Zhejiang, Lin’an, Qingliangfeng, 16-22.V.2012, leg. G. L. Xie. Paratypes: China: 2♀ (MHBU), same data as holotype; 1♀ (MHBU), Zhejiang, Lin’an, Qingliangfeng, Shunxiwu, 15-18.V.2012, leg. J. S. Xu & L. X. Chang; 1♀ (MHBU), Zhejiang, Lin’an, Qingliangfeng, Longtangshan, 19.V.2011, leg. G. L. Xie.

Diagnosis.

The new species resembles L. pictipennis in the coloration and characteristics of tarsal claws, but differs from the latter in the aedeagus: basal piece very large, ~ 3 × longer than dorsal plate of each paramere in lateral view (Fig. 8F), dorsal plate narrow (Fig. 8E), laterophyse slightly bent inwards in ventral view (Fig. 8D). In comparison, in the aedeagus of L. pictipennis, basal piece is nearly as long as dorsal plate of each paramere in lateral view (Fig. 7F), dorsal plate wide (Fig. 7E), laterophyse obviously bent outwards in ventral view (Fig. 7D).

Also, it is similar to L. kubani in the structure of tarsal claws, genitalia of both sexes and female abdominal sternite VIII, but which are different in each component part in detail, and can be easily distinguished from the latter in the uniformly yellow elytra, while elytra black at apices in L. kubani . The coloration of elytra is stable and a good character to recognize the species in L. pallidulus group.

Description.

Male (Fig. 18C). Head, prothorax and legs yellowish orange, mandibles dark brown at apices, antennomeres III-XI black, scutellum orange and darkened along margins, elytra pale yellow, tibiae and tarsi black, except for protibiae yellow ventrally, meso- and metasterna and abdomen yellowish brown. Body densely covered with yellow recumbent pubescence.

Head feebly narrowed behind eyes, surface densely and finely punctate; eyes moderately large and protruding, head width across eyes distinctly wider than anterior margin of pronotum; antennae filiform, extending to elytral mid-length when reclined, antennomere II shortest, ~ 2 × longer than wide at apex, III-IX feebly widened apically, IV-IX each with a short smooth impression near basal part of outer margin (X-XI missing), VII longest.

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

Elytra ~ 3.5 × longer than pronotum, 4.4 × longer than width across humeri, outer margins nearly parallel, disc semi-lustrous, coarsely and densely punctate.

Legs slender, fore and middle legs with a digitiform tooth on each anterior and posterior claw, and hind claws simple.

Aedeagus: basal piece obviously longer than dorsal plate of each paramere (Fig. 8D-F); ventral process of each paramere thin and short, feebly bent inwards and approaching to each other in ventral view (Fig. 8D), nearly straight in lateral view (Fig. 8F); dorsal plates of parameres obviously longer than ventral processes (Fig. 8D, F), with inner margins parallel, outer margins abruptly converging apically in the middle, apical margins rounded (Fig. 8E); laterophyse feebly shorter than ventral process, bent dorsally, with apices acute and directing dorso-inwards in ventral view (Fig. 8D, F).

Female (Fig. 18D). Similar to the males, but eyes less protruding, antennae thinner and shorter, extending to basal one-third length of elytra when reclined, middle antennomeres without impressions, pronotum nearly as long as wide.

Internal organ of reproductive system (Fig. 14A): spermatheca slightly longer than diverticulum; accessory gland ~ 1.5 × longer than spermatheca.

Abdominal sternite VIII (Fig. 16E): triangular emargination in middle and rounded emarginations on both sides of posterior margin, lateral emarginations wider and feebly deeper than the middle one, the portions between lateral and middle emarginations narrow and acute at apices, obviously extending over apices of latero-apical angles, which are widely triangular.

Body length: 11.0-12.0 mm (11.0 mm in holotype); width: 2.3-3.0 mm (2.3 mm in holotype).

Distribution.

China (Zhejiang).

Etymology.

The specific name is derived from the Latin flavus (golden-yellow) and pinna (wing), referring to its yellow elytra.