Broscosoma xuhaoi Jiang, Feng & Wang 2020, sp. nov.
Creators: name: Jiang, Ri-Xin
name: Feng, Qi
name: Wang, Shuo
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Carabidae
Broscosoma
Broscosoma xuhaoi

description: Broscosoma xuhaoi Jiang, Feng & Wang, sp. nov. ṅã珠+·
Figs. 1–2
Type material (2 specimens). Holotype: CHINA: ♂, labelled ‘ China: Chongqing City (×ƫm), Jiangjin District (Iŧss), Simianshan N. R. (..±hg.fss), Ertai (ĩŝ), elevation 1000 m, 28. V.2018, Hao Xu leg.’ (MYNU). Paratype: CHINA: 1 ♂, same label data as the holotype (MYNU).
Diagnosis. Body shiny, dark brown, legs, labrum, palpi and antennae brown. Frontal grooves irregular and impunctate, labrum with six setigerous punctures, clypeus with four setigerous punctures. Pronotum global, with a pair of setigerous punctures. Elytra with eight distinct striae, shoulders largely rounded, each elytron with two setigerous punctures at base, two setigerous punctures near apex.
Description. Male. Body (Fig. 1A) dark brown, slender and obviously convex, dorsal surface very shiny.
Head (Fig. 1B) wider than long, convex, dorsal surface shiny, lacking punctures, frontal grooves irregular and impunctate. Labrum nearly rectangular, with six setigerous punctures and slightly emarginate at apical margin. Apical margin of clypeus slightly emarginate with four setigerous punctures. Eyes large, supraorbital setae located at hind level of eyes. Antenna (Fig. 2A) longer than the combination of head and pronotum. Antennomeres I–IV glabrous, V–XI densely pubescent.
Pronotum (Fig. 1B), global, distinctly convex, slightly longer than wide, widest slightly anterior of middle, equally constricted at anterior and basal margins, dorsal surface shiny without punctures. Median longitudinal impression and anterior impression shallow but distinct. One pair of setigerous punctures located at anterior middle of lateral margin of pronotum.
Elytra (Fig. 2B), longer than wide, strongly convex, dorsal surface shiny, each elytron with eight distinct striae. Scutellum nearly triangular, small. Shoulders largely rounded, narrow. Each elytron with four setigerous punctures, two pairs located at base and two pairs located near apex. The inner setigerous punctures of basal elytra located near base of stria II, outer punctures located at shoulders; the inner apical setigerous punctures located near apex of stria III, and the outer puncture located at apex of stria VII.
Legs simple, glabrous, only tibial apex with few thin setae, protarsomeres slightly dilated.
Median lobe of aedeagus (Fig. 2C) simple, ending in a rounded tip; right paramere (Fig. 2E) arcuate, slightly expanded and rounded at apex, with dense long hairs along apical margin; left paramere (Fig. 2D) expanded at middle and tapered to narrow at apex, apically with several long hairs.
Female. Unknown.
Measurements (mm). BL 7.36–7.68; HL 1.09–1.15, HW 1.53–1.58; PL 2.18–2.34, PW 1.91–2.03; EL 4.094.19, EW 2.90–2.94.
Distribution. China: Chongqing City.
Biological notes. Both adults were collected on the lower surface of a damp cliff at night (Fig. 5).
Etymology. This species is named in honor of Dr. Hao Xu (MYNU), who collected the new species and donated it to us for study.
Remarks. The new species can be distinguished easily from other known Chinese congeners by the elytra with eight distinct striae. However, B. xuhaoi sp. nov. share similar habit characters with B. zhengyuandongi sp. nov.. B. xuhaoi sp. nov. can be distinguished from B. zhengyaundongi sp. nov. by the follow characters: 1) the striae on the elytra are shallower; 2) clypeus with four setigerous punctures; 3) apex of left paramere of aedeagus with several long hairs; 4) right paramere of aedeagus distinctly expanded near apex.
description: Published as part of Jiang, Ri-Xin, Feng, Qi & Wang, Shuo, 2020, Two new species of the genus Broscosoma Rosenhauer, 1846 (Coleoptera Carabidae, Broscinae) from China, pp. 173-180 in Zootaxa 4821 (1) on pages 174-177, DOI: 10.11646/zootaxa.4821.1.10, http://zenodo.org/record/4440482