Lycocerus bispermathecus 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/372D5287-5C6F-484C-8EAC-C8CC9DD0972E
taxon LSID	lsid:zoobank.org:act:372D5287-5C6F-484C-8EAC-C8CC9DD0972E
treatment provided by	ZooKeys by Pensoft
scientific name	Lycocerus bispermathecus Y. Yang, Wang & Liu
status	sp. nov.

Treatment

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

Figs 11D-F View Figure 11 , 15B View Figure 15 , 17F View Figure 17 , 20C, D View Figure 20

Lycocerus centrochinensis ( Švihla, 2004): Li et al. 2015: 300, fig. 1A [misidentification].

Type material.

Holotype: ♂ (MHBU), China, Ningxia, Kongtongshan, 6.VI.1992, leg. J. L. Ding. Paratypes: China: 1♀ (MHBU), Ningxia, Jingyuan, Liupanshan, 13.VI.1995, Collectors Group III of Forestry; 1♀ (MHBU), same data as the preceding, 8.VI.1995, Collectors Group III of Forestry; 1♀ (MHBU), same data as the preceding, 17.VI.1995, Collectors Group III of Forestry.

Diagnosis.

The new species seems similar to L. hubeiensis in the coloration, but differs in the following characters: tarsal claws simple in males, while fore and mid-anterior and posterior claws each with a digitiform tooth at base in the latter; aedeagus: dorsal plates of parameres triangular at apices (Fig. 11E View Figure 11 ), while truncated in the latter (Fig. 4E View Figure 4 ); spermatheca with two spiral tubes (Fig. 15B View Figure 15 ), while only one in the latter.

Description.

Male (Fig. 20C View Figure 20 ). Head, prothorax, scutellum and legs yellowish orange, mandibles dark brown at apices, antennomeres III-XI black, elytra pale yellow and almost transparent, black at apices, legs darkened at tarsi, 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 nearly wider than anterior margin of pronotum; antennae filiform, extending to apical third length of elytra when reclined, antennomere II shortest, ~ 2 × longer than wide at apices, IV-XI nearly parallel-sided, each with a short smooth impression near apical part of outer margin, IV longest.

Pronotum subquadrate, slightly 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 ~ 4.4 × longer than pronotum, 3.12 × longer than width across humeri, outer margins nearly parallel, disc semi-lustrous, coarsely and densely punctate.

Legs slender, all claws simple.

Aedeagus: basal piece obviously longer than dorsal plate of each paramere (Fig. 11D-F View Figure 11 ); ventral process of each paramere slender and straight, approaching to each other in ventral view (Fig. 11D View Figure 11 ) and feebly inclining dorsally in lateral view (Fig. 11F View Figure 11 ); dorsal plates of parameres feebly shorter than ventral processes (Fig. 11D, F View Figure 11 ), with inner margins diverging and outer margins converging apically, apical margins widely triangular in dorsal view (Fig. 11E View Figure 11 ); laterophyse obviously shorter than ventral process, with apices acutely hooked, directing dorso-inwards in ventral view (Fig. 11D View Figure 11 ); inner sac with a pair of longitudinal sclerites on dorsal side (Fig. 11E View Figure 11 ).

Female (Fig. 20D View Figure 20 ). Similar to the males, but eyes less protruding, antennae shorter and extending to 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. 15B View Figure 15 ): spermathecal duct stout, spermatheca with two spiral tubes, which are subequal in length, both of them shorter than diverticulum; accessory gland ~ 2.5 × longer than spermatheca.

Abdominal sternite VIII (Fig. 17F View Figure 17 ): triangular emarginations in middle and on both sides of posterior margin, lateral emarginations feebly deeper than the middle one, the portion between lateral and middle emarginations narrow and acute at apices, obviously extending over apices of latero-apical angles, which are widely triangular.

Body length: 9.0-10.0 mm (9.3 mm in holotype); width: 2.0-2.3 mm (2.0 mm in holotype).

Distribution.

China (Ningxia).

Etymology.

The specific name is derived from the Latin spermatike (sperm-carrying), referring to its distinctive spermatheca, which has two spiral tubes.