Hexarhopalus (Leprocaulus) qiului Jiang, Bai, Ren & Wang 2020, sp. nov.
Creators: name: Jiang, Ri-Xin
name: Bai, Xing-Long
name: Ren, Guo-Dong
name: Yang, Hui-Yu
name: Wang, Shuo
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Tenebrionidae
Hexarhopalus
Hexarhopalus qiului

description: Hexarhopalus (Leprocaulus) qiului Jiang, Bai, Ren & Wang sp. nov.
(Figs 12–13, 21I, 22E)
Type material (4 spec. 2 ♂♂, 2 ♀). Holotype: CHINA: ♂, labeled ‘ China: Yunnan, Yuxi City (ṮÃḿ), Xinping YizuDaizu Autonomous County (ǛṬṖKėKÞảss), Gasa Town (ǟāẘ), Yaonan Village (ḆĦń), Ailaoshan N. R. (ṘẆƜÞǿùếṽ), 2018.5.24, Lu Qiu leg.’ (MHBU). Paratypes: CHINA: 1 ♂, 2 ♀. Same collected data with holotype (1♂, 1 ♀, MYNU; 1 ♀, MHBU).
Description. Male (Figs 12A, 13A – G). Body elongate, black, convex and crude.
Head (Fig. 13A) distinctly transverse, dorsal surface covered with dense big punctures and short hairs, length of hairs equal to about 1.5 times of diameters of the eye facets. Labrum narrower than clypeus, covered with bristles of medium length in apical portion. Antennal tubercles weak, antenna (Fig. 13B) slightly longer than the combined length of head and pronotum, clubs loosely formed by apical four antennomeres. Antennomere I slightly expanded; II shortest, longer than wide; III longest, about 2.5 times as long as II, IV-VI similar, shorter than III, VII expanded at apex; apical four dark brown, expanded, XI with rounded apex.
Pronotum (Fig. 13A) strongly concave at middle, and about as long as wide, widest at middle, dorsal surface covered with dense big punctures and short hairs, punctures of pronotum are formed to strong wrinkles. Groove of pronotum much deep at base, the back angle oblique indentation slightly short, deep, curved forward and upward. Lateral groove continuously connected with the back angle oblique indentation, deep and much wider, other two groove on pronotum shallow and not obvious, median line not obvious.
Elytra about twice as long as wide, widest at apical 1/3, shoulders strong, Disc with regular rows of orderly foveolate punctres, scutellum transverse, near triangular. Hind wings fully developed.
Femora strongly expanded at middle, all tibiae covered with brown setae at apex, protibiae and mesotibiae obviously curved. All legs dark brown at basal part, and with black apex.
Aedeagus (Figs 13 C–E), near symmetrical, abdominal ventrite VIII (Fig. 13G) deeply split medially at posterior margin and with long hairs at hind margin. Spiculum gastrale (Fig. 13F) dissymmetrical, short, with large apical lobes and apex with varying lengths hairs.
Measurements. AnL 3.79–3.82 mm, BL 11.34–11.66 mm, HL 1.31–1.36 mm, HW 2.19–2.23 mm, PL 2.79–2.84 mm, PW 2.80–2.83 mm, EL 7.24–7.46 mm, EW 3.74–3.86 mm, AL 1.34 mm.
Female (Figs 12B, 13H – I). Similar to males. Ventrite VIII (Fig. 13H) weakly split medially at posterior margin and covered with long dense hairs. Spiculum (Fig. 13I) slightly curved, apex rounded. Apex of ovipositor (Fig. 11I) with one long hair and two much shorter hairs.
Measurements. AnL 3.65–3.67 mm, BL 10.27–10.74 mm, HL 1.26–1.31 mm, HW 2.05–2.18 mm, PL 2.07–2.20 mm, PW 2.08–2.19 mm, EL 6.94–7.21 mm, EW 3.53–3.55 mm.
Comparative Notes. The new species is most similar to Hexarhopalus (Leprocaulus) eva Bečvář & Purchart, 2008 and Hexarhopalus (Leprocaulus) difformis (Pic, 1922) in general appearance. All three species have the same black body, pronotum with strong wrinkles and elytra with regular rows of orderly foveolate punctres. The new species could be separated from Hexarhopalus (L.) eva by the wide and obvious pronotal lateral groove and the lateral groove posteriorly not interrupted; and can be distinguished from H. (L.) difformis by: 1) the shorter hairs on head and pronotum (1.5 times of diameters of the eye facets in H. (L). qiului and 2 times in H. (L.) difformis); 2) vanishing median line of pronotum; and 3) shorter aedeagus with wide base (vs. with slender aedeagus).
Distribution. China: Yunnan.
Biology. The adult was collected on the tree trunk at night.
Etymology. This species is named in honor of our friend Dr. Lu Qiu, who collected the type series.
description: Published as part of Jiang, Ri-Xin, Bai, Xing-Long, Ren, Guo-Dong, Yang, Hui-Yu & Wang, Shuo, 2020, A taxonomic revision of the genus Hexarhopalus (Coleoptera, Tenebrionidae Cnodalonini) from China, pp. 277-304 in Zootaxa 4821 (2) on pages 291-292, DOI: 10.11646/zootaxa.4821.2.3, http://zenodo.org/record/4440916