Lycocerus nigrobilineatus Pic 1916
Creators: name: Xi, Huacong
name: Wang, Younan
name: Yang, Xingke
name: Liu, Haoyu
name: Yang, Yuxia
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cantharidae
Lycocerus
Lycocerus nigrobilineatus

description: Lycocerus nigrobilineatus Pic, 1916
Figs 1A–B, 2A–C, 6A, 7A
Lycocerus nigrobilineatus Pic, 1916: 16.— Kazantsev and Brancucci 2007: 252.
Athemus (s.str.) nigrobilineatus (Pic, 1916) — Wittmer, 1995: 267, figs. 127‒128, 191‒192.
Type material examined. Holotype: ♀ (MNHN), [h] “ Yunnan / China ”, [h]“type”, [h] “nigrobilineatus / Pic”, [h] “ Athemus s.str. / nigrobilineatus / (Pic) / det. W. Wittmer ”, [h] “61/2”, [p] “TYPE”.
Additional material examined. China, Yunnan: 1♀ (IZAS, IOZ (E)1119866), Weixi, Pantiange, 2400 m, 25.vii.1981, leg. S.Y. Wang; 1♀ (IZAS), Cangshan, 2850 m, 30.vi.1981, leg. S. Y.Wang; 1♀ (IZAS, IOZ (E)1435293), Weixi, Pantiange, 2500 m, 26.vii.1981, leg. S. Y. Wang; 1♂ (NWAFU), Dali, Diancangshan, 2940 m, 19.–20.vi.1974, leg. Y. Zhou & F. Yuan; 1♂ (MHBU), Daxing, Laduhe, 26.vii.2011, leg. H. Y. Liu; 1♂ (MHBU), “ Habashan mts. SE slope, 2000–3000 m, 27˚20’N, 100˚11’E, 10.–13.vii.1992, leg. Vít Kubáň ”.
Redescription. Male (Fig. 1B). Body black, mandibles brown, pronotum red, with two large dark brown markings on both sides which conjoint in center of disc, elytra red, darkened at the whole length of all elytral interstices. Body densely covered with short, decumbent brown pubescence.
Head evenly narrowed behind eyes, surface densely and finely punctate; eyes moderately protruding, head width across eyes distinctly wider than anterior margin of pronotum; terminal maxillary palpomeres long-triangular, arcuate and sharp at apical half length of inner margins; antennae subfiliform, nearly extending to apical one-third length of elytra when reclined, antennomere II shortest, nearly as long as wide at apices, III‒VII feebly widened apically, III about three times as long as wide at apices, III‒XI each with an oblong to round smooth impression at apical part of inner margin, IV widest and slightly longer than III, VIII longest, VIII‒XI nearly parallel-sided, XI longer than X and pointed at apices.
Pronotum 1.1 times longer than wide, widest at base, anterior margin arcuate, lateral margins moderately diverging posteriorly, posterior margin slightly arcuate and narrowly bordered, anterior angles rounded, posterior angles rectangular, disc moderately convex at postero-lateral parts, surface semillustrous, sparsely punctate than that on head.
Elytra about 4.8 times longer than pronotum, 3.3 times longer than humeral width, which about 1.5 times wider than posterior margin of pronotum, lateral margins nearly parallel, apices rounded, elytra venations weakly developed, not costate, surface matt, wrinkled, sparsely and finely punctate.
Legs slender, all claws simple.
Aedeagus (Figs 2A–C): ventral process of each paramere nearly straight both in ventral and lateral views, with apex feebly expanded and rounded; dorsal plate shorter than ventral process, longitudinally ridged laterally on inner surface, with inner margin hardly protuberant in middle, apical margin rounded and obviously emarginate at outer apical angle, which subrounded in lateral view; laterophyse feebly shorter than dorsal plate, with apex acutely hooked and bent dorsally, opposite to apical end of longitudinal ridge of dorsal plate.
Female (Fig. 1A). Similar to the male, but eyes less protruding, antennae shorter, extending to basal one-third length of elytra when reclined, III‒XI without impressions, pronotum wider, about 1.2 times wider than long, feebly convex on postero-lateral parts of disc, pro- and meso-outer tarsal claws each with a digitiform tooth at base.
Abdominal sternite VIII (Fig. 6A): roundly emarginate in middle and deeply and nearly triangularly emarginate on both sides of posterior margin, lateral emarginate parts much deeper than the middle one, the portion between lateral and middle emarginate parts obtuse-angled at apex, lateral emarginate parts membranous-lobed laterally, latero-apical angles subrounded at apices, not reaching apices of the portions between lateral and middle emarginate parts.
Internal organ of reproductive system (Fig. 7A): vagina stout and abruptly thinned at ventro-apical portion into a stout tube, where diverticulum and spermathecal duct arising separately; diverticulum moderately long, evenly thin and spiral; spermathecal duct obviously shorter and thicker than diverticulum; spermatheca provided with a spiral tube, longer than diverticulum, abruptly thinned at basal one-third, with the basal portion feebly thinned apically and much thicker than apical portion; accessory gland directly opening at base of spermatheca, thin and much longer than spermatheca.
Body length: 7.5–9.0 mm; width: 1.8 ‒ 2.2 mm.
Distribution. China (Yunnan).
description: Published as part of Xi, Huacong, Wang, Younan, Yang, Xingke, Liu, Haoyu & Yang, Yuxia, 2021, New species and taxonomic notes on Lycocerus hickeri species-group (Coleoptera Cantharidae), pp. 541-557 in Zootaxa 4980 (3) on pages 542-544, DOI: 10.11646/zootaxa.4980.3.5, http://zenodo.org/record/4897200