Lycocerus parameratus, Yang & Yang, 2013

Yang, Yu-Xia & Yang, Xing-Ke, 2013, Four new species of Lycocerus Gorham, 1889 from China (Coleoptera: Cantharidae), Journal of Natural History 47 (1 - 2), pp. 75-86 : 77-80

Lycocerus parameratus sp. nov.

( Figures 2A , 3 A–C, 3G)

Male. See Figure 2A . Body length: 8.0– 8.5 mm; width: 1.7–1.8 mm. Head black, clypeus and mouthparts yellow, mandibles dark brown, maxillary and labial palpomeres black, antennae black, antennomeres I–IV yellow ventrally, pronotum black, pronotal hypomera yellow at lower margins, scutellum and elytra black, legs black, coxae, trochanters and femora yellow, femora black along upper sides, prosternum yellow, meso- and metasterna and abdomen black, lateral and posterior margins of abdominal ventrites and the whole last ventrite yellow. Body densely covered with light yellow short pubescence, sparsely mixed with long erected pubescence on clypeus, pronotum and elytra.

Head. Rounded, breadth across eyes wider than anterior margin of pronotum, dorsum finely and densely punctate, eyes moderately protruding, apical maxillary palpomeres long-triangular, widest nearly in middle, apical half of inner margins sharp and arcuate, antennae subfiliform and slightly flatted, extending to apical one-fifth of elytra, antennomeres II as long as wide at apex, IV slightly longer and narrower than III, IV–XI each with a short and narrow longitudinal furrow near middle of outer margin, XI longer than X and pointed at apex.

Pronotum. Subquadrate, distinctly longer than wide, anterior margin arcuate, lateral margins nearly parallel, posterior margin arcuate and slightly bordered, anterior angles rounded, posterior angles nearly vertical, disc convex at posterolateral parts, surface finely and densely punctate as that on head.

Elytra. About three times longer than pronotum, three times longer than humeral width, lateral margins distinctly converging posteriorly, disc densely and slightly largely punctate than that on pronotum.

Legs. Pro- and meso-outer claws each with an obtuse tooth at base, inner claws simple, both meta-outer and inner claws simple.

Aedeagus. See Figure 3 A–C. Conjoint dorsal plate of parameres widely emarginated at apical margin and slightly protuberant in middle of emargination, lateral angles acute, lateral margins triangularly protuberant nearly in middle and folded inwards, with an inverse-triangular ridge extending from apical margin along median longitudinal line on inner surface; ventral process of each paramere strongly curved at base and distinctly shorter than conjoint dorsal plate; laterophyses narrow, with apices rounded and turned inwards, next to each other in middle.

Female. Similar to male, but eyes slightly protruding; antennae filiform, slightly narrower and shorter than that of male, extending to middle of elytra, antennomeres IV–XI without furrows; pronotum with disc slightly convex; elytra with lateral margins slightly converging posteriorly; pro- and meso-femora and tibiae yellow, apical parts of femora and the whole tibiae black along upper sides; abdominal sternite VIII ( Figure 3G ) with a large semicircle emargination in middle and two small rounded emarginations on both sides of posterior margin.

Type material. Holotype: ♂, China, Guangdong, Nanling, Xiaohuangshan , 1318–1574 m, 17 July 2008, leg. Gan-Yan Yang [transliterated from Chinese label] (in IZAS) . Paratypes: 1♀, China, Hunan, Yizhang, Mangshan, Tiantaishan , 15 July 2008, leg. Hong-Bin Liang [transliterated from Chinese label] ( IZAS) ; 1♂, same data, 1487 m, 24.97 ◦ N, 112.96 ◦ E ( IZAS) .

Etymology. This specific name is derived from the Latin paramere (lateral lobe), referring to its characteristic parameres of aedeagus.

Remarks. The right protarsomeres IV–V of the holotype are missing. The right antennomeres III–XI, left mesoleg and right metatarsi of the paratype male are missing. The right metatarsomeres II–V of the paratype female are missing.

Figures

Figure 2. Male habitus in dorsal view. (A) Lycocerus parameratus sp. nov.; (B) L. nigroapicis sp. nov.; (C) L. bifurcatus sp. nov.; (D) L. nigrigenus sp. nov.

Figure 3. Lycocerus parameratus sp. nov. (A–C, G) and L. nigroapicis sp. nov. (D–F, H). (A, D) Aedeagus in ventral view; (B, E) aedeagus in dorsal view; (C, F) aedeagus in lateral view; (G, H) female abdominal sternites VIII in ventral view. Note: Scale bars = 1 mm.