Lycocerus maoershanensis Y. Yang, Liu & X. Yang, 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/482BA762-7D56-4D21-9EA8-FF1CAD1998C7
taxon LSID	lsid:zoobank.org:act:482BA762-7D56-4D21-9EA8-FF1CAD1998C7
treatment provided by	ZooKeys by Pensoft
scientific name	Lycocerus maoershanensis Y. Yang, Liu & X. Yang
status	sp. nov.

Treatment

Lycocerus maoershanensis Y. Yang, Liu & X. Yang sp. nov.

Figs 9A-C View Figure 9 , 13C View Figure 13 , 17C View Figure 17 , 19A, B View Figure 19

Type material.

Holotype: ♂ (IZAS), China, Guangxi, Maoershan, 1900 m, 14.VII.1985, leg. S. B. Liao. Paratypes: China: 1♂, 1♀ (IZAS), same data as holotype; 1♀ (IZAS), same locality as holotype, 1950 m, 14.VII.1985, leg. S. M. Song.

Diagnosis.

Although the new species is similar to L. laterophysus sp. nov. in the bicolored head, it is more related to L. zdeneki on basis of the structure of aedeagus. Further, L. maoershanensis sp. nov. can be distinguished from the latter in the following characters: scutellum dark brown; female abdominal sternite VIII (Fig. 17C View Figure 17 ) with the portion between lateral and middle emarginations rounded at apices, which obviously extending over latero-apical angles. In comparison, L. zdeneki has yellow scutellum; female abdominal sternite VIII (Fig. 16F View Figure 16 ) with the portion between lateral and middle emarginations feebly extending over latero-apical angles.

Description.

Male (Fig. 19A View Figure 19 ). Head, prothorax and legs yellowish orange, vertex with a small triangular dark brown marking, mandibles dark brown at apices, antennomeres III-XI black, pronotum with two dark brown irregular markings near middle of anterior and posterior margins, scutellum black, elytra pale yellow and almost transparent, legs more or less darkened at tarsi, apices of tibiae and femora, meso- and metasterna and abdomen black. 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 slightly wider than anterior margin of pronotum; antennae filiform, extending to three-fifths of elytra when reclined, antennomere II shortest, ~ 1.5 × longer than wide at apex, III-VI feebly widened apically, IV-XI each with a short smooth impression near basal part of outer margin, VII-XI nearly parallel-sided, VIII longest.

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

Elytra ~ 3.75 × longer than pronotum, 5.0 × 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 claw, and hind claws simple.

Aedeagus: basal piece slightly longer than dorsal plate of each paramere (Fig. 9A-C View Figure 9 ); ventral process of each paramere slender, feebly bent inwards and approaching to each other in ventral view (Fig. 9A View Figure 9 ), inclining ventrally in lateral view (Fig. 9C View Figure 9 ); dorsal plates of parameres slightly longer than ventral processes (Fig. 9A, C View Figure 9 ), with inner margins emarginate at apical parts, outer margins slightly converging apically, apical margins slightly arcuate and descending inwards, inner apical angle acute angled and outer angle rounded in dorsal view (Fig. 9B View Figure 9 ); laterophyse feebly longer than ventral process, with apices acute and directing dorso-inwards in ventral view (Fig. 9A View Figure 9 ).

Female (Fig. 19B View Figure 19 ). Similar to the males, but eyes less protruding, antennae shorter and extending to basal third length of elytra 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. 13C View Figure 13 ): spermatheca nearly as long as diverticulum; accessory gland nearly as long as spermatheca.

Abdominal sternite VIII (Fig. 17C View Figure 17 ): subrounded emarginations in middle and on both sides of posterior margin, lateral emarginations deeper than and as wide as the middle one, the portions between lateral and middle emarginations moderately wide and rounded at apices, obviously extending over apices of latero-apical angles, which are narrowly triangular.

Body length: 9.0-10.0 mm (9.1 mm in holotype); width: 1.7-2.3 mm (1.8 mm in holotype).

Distribution.

China (Guangxi).

Etymology.

The specific name is derived from the name of the type locality, Maoershan, Guangxi, China.