Lycocerus chongqingensis Y. Yang, Wang & Liu, 2023

Wang, Younan, Liu, Haoyu, Yang, Xingke & Yang, Yuxia, 2023, Review of the Lycocerus pallidulus group (Coleoptera, Cantharidae), with descriptions of six new species from China, ZooKeys 1176, pp. 243-285 : 243

publication ID	https://dx.doi.org/10.3897/zookeys.1176.107858
publication LSID	lsid:zoobank.org:pub:0EC46873-0B9C-484C-8803-71C49D89925F
persistent identifier	https://treatment.plazi.org/id/74057CE9-07BD-4C2E-9F51-55584FDCDC9D
taxon LSID	lsid:zoobank.org:act:74057CE9-07BD-4C2E-9F51-55584FDCDC9D
treatment provided by	ZooKeys by Pensoft
scientific name	Lycocerus chongqingensis Y. Yang, Wang & Liu
status	sp. nov.

Treatment

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

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

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 View Figure 10 ); abdominal sternite VIII (Fig. 17E View Figure 17 ) 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 View Figure 3 ); abdominal sternite VIII (Fig. 16B View Figure 16 ) 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 View Figure 20 ). 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 View Figure 10 ); ventral process of each paramere slender and feebly bent inwards and approaching to each other in ventral view (Fig. 10A View Figure 10 ), inclining ventrally in lateral view (Fig. 10C View Figure 10 ); dorsal plates of parameres obviously longer than ventral processes (Fig. 10A, C View Figure 10 ), 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 View Figure 10 ); laterophyse nearly as long as ventral process, with apices acute and directing dorso-outwards (Fig. 10A, C View Figure 10 ).

Female (Fig. 20B View Figure 20 ). 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 View Figure 15 ): spermatheca nearly as long as diverticulum; accessory gland ~ 2.2 × longer than spermatheca.

Abdominal sternite VIII (Fig. 17E View Figure 17 ): 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.