Hexarhopalus (Leprocaulus) nanlingensis Jiang & Li & Ji & Engel & Wang 2021, sp. nov.
Creators: name: Jiang, Ri-Xin
name: Li, Ze-Chuan
name: Ji, Quan-Yu
name: Engel, Michael S.
name: Wang, Shuo
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Tenebrionidae
Hexarhopalus
Hexarhopalus nanlingensis

description: Hexarhopalus (Leprocaulus) nanlingensis sp. nov.
(Figs 6–7)
Type material. Holotype: CHINA: ♂, labeled ‘ China: Guangdong, Ruyuan County, Nanling National Forest Park, H: ~ 900m, 01.VIII.2019 ’ (MHBU).
Description. Male (Fig. 6A): Body elongate, black, convex, and shiny.
Head (Fig. 6B) distinctly transverse, dorsal surface finely covered with small punctures, each puncture bearing a short, thin seta. Labrum narrower than epistoma, covered with medium-length bristles in apical portion, apical margin rounded. Antennal tubercles weak, antenna (Fig. 7A) slightly shorter than combined lengths of head and pronotum, club loosely formed by apical four antennomeres. Relative lengths of antennomeres: 0.33: 0.23: 0.47: 0.33: 0.33: 0.33: 0.33: 0.30: 0.27: 0.27: 0.37; relative widths of antennomeres: 0.20: 0.17: 0.17: 0.17: 0.17: 0.17: 0.20: 0.27: 0.30: 0.30: 0.33. Antennomere I slightly expanded; antennomere II shortest, longer than wide; antennomere III longest, more than twice as long as natennomere II, antennomeres IV–VII similar, shorter than antennomere III, apical four dark brown, distinctly expanded, antennomere XI with rounded apically.
Pronotum (Fig. 6B) about as long as wide, widest at apical 1/3, strongly convex, dorsal surface finely covered with small punctures and short setae, punctures much larger basally; mediolongitudinal sulcus wide and deep, about 2/3 pronotal length; pronotal groove deeper basally and shallower in anterior part; oblique indentation of posterior angle deep (Fig. 7B), curved forward and upward. Prosternum distinctly rained before procoxae, surface weakly wrinkled, glabrous, apex of prosternal process obtuse.
Elytra more than twice as long as wide, widest at apical 1/3, humerus strong, disc with regular rows of regularly spaced punctures and small nodules; mesoscutellum transverse, nearly triangular; wings fully developed.
Metaventrite and abdomen shiny and finely covered with small punctures and minute setae; median sulcus of metaventrite quite shallow but present, extending from anterior margin to ca. 4/5 of metaventrite length. Abdominal ventrite I longest, about as long as combined lengths of ventrites III and IV; ventrite II longer than ventrite III; ventrites III and IV clearly concave; ventrite V shorter than combined lengths of ventrites III and IV, rounded apically; ventrite VIII (Fig. 7F) with deeply medial emargination in posterior margin, with sparse long setae along hind margin.
Femora distinctly claviform medially, all tibiae covered with brown setae apically, pro- and mesotibiae slightly curved, metatibia straight, meso- and metatibiae slightly expanded apically; tarsomeres simple, distal pro- and mesotarsomeres each about as long as combines lengths of proximal four pro- and mesotarsomeres, respectively, distal metatarsomere about as long as combines lengths of metatarsomeres II–IV.
Aedeagus (Figs 7C–E) symmetrical in dorsal view, distinctly curved in lateral view. Spiculum gastrale (Fig. 7G) asymmetrical, short, with large apical lobes.
Measurements: BL 13.15 mm, HL 1.57 mm, HW 2.31 mm, PL 2.98 mm, PW 3.28 mm, EL 8.60 mm, EW 4.85 mm.
Female: Unknown.
Differential diagnosis. This new species is similar to H. (Leprocaulus) sinjaevi Bečvář & Purchart, 2008 from North Vietnam in its general appearance, but it can be distinguished from it by the strongly convex pronotum (in lateral view) with a wide and deep median sulcus, while the median sulcus narrow and shallow in H. (L.) sinjaevi.
Distribution. China: Guangdong.
Biology. Unknown.
Etymology. The specific epithet refers to the type locality, Nanling National Forest Park (Guangdong Province, Ruyuan County); adjective.
description: Published as part of Jiang, Ri-Xin, Li, Ze-Chuan, Ji, Quan-Yu, Engel, Michael S. & Wang, Shuo, 2021, Three new species of the genus Hexarhopalus Fairmaire, 1891 (Coleoptera, Tenebrionidae: Cnodalonini) from China, pp. 587-597 in Zootaxa 5004 (4) on pages 594-596, DOI: 10.11646/zootaxa.5004.4.7, http://zenodo.org/record/5140970