Hexarhopalus (Leprocaulus) qiului Jiang, Bai, Ren & Wang, 2020

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, Zootaxa 4821 (2), pp. 277-304 : 291-292

publication ID	https://doi.org/ 10.11646/zootaxa.4821.2.3
publication LSID	lsid:zoobank.org:pub:F0EBDD5F-5DBE-47A9-B946-881DF3A21BA1
DOI	https://doi.org/10.5281/zenodo.4441058
persistent identifier	https://treatment.plazi.org/id/03838217-0D4F-703F-2FBD-451BFAA6FC52
treatment provided by	Plazi
scientific name	Hexarhopalus (Leprocaulus) qiului Jiang, Bai, Ren & Wang
status	sp. nov.

Treatment

Hexarhopalus (Leprocaulus) qiului Jiang, Bai, Ren & Wang sp. nov.

( Figs 12–13 View FIGURE 12 View FIGURE 13 , 21I View FIGURE 21 , 22E View FIGURE 22 )

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 View FIGURE 12 , 13A – G View FIGURE 13 ). Body elongate, black, convex and crude.

Head ( Fig. 13A View FIGURE 13 ) 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 View FIGURE 13 ) 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 View FIGURE 13 ) 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 View FIGURE 13 C–E), near symmetrical, abdominal ventrite VIII ( Fig. 13G View FIGURE 13 ) deeply split medially at posterior margin and with long hairs at hind margin. Spiculum gastrale ( Fig. 13F View FIGURE 13 ) 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 View FIGURE 12 , 13H – I View FIGURE 13 ). Similar to males. Ventrite VIII ( Fig. 13H View FIGURE 13 ) weakly split medially at posterior margin and covered with long dense hairs. Spiculum ( Fig. 13I View FIGURE 13 ) slightly curved, apex rounded. Apex of ovipositor ( Fig. 11I View FIGURE 11 ) 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.