Nazeris gladius Gao & Da & Hu 2023, sp. n.
Creators: name: Gao, Zhuo-Qun
name: Da, Wa
name: Hu, Jia-Yao
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Nazeris
Nazeris gladius

description: Nazeris gladius sp. n.
Figs 1E, 2E, 7A–F, 10K
Type material. Holotype: CHINA: male, ‘ China: Xizang, Gyirong County, Gyirong Valley, pass nr. Ru Kupuqiong, 28°25′47″N, 85°15′50″E, 3000 m, 20.vi.2021, Z. Peng, Z. Yin & W. Zhang leg. (ƱAEƋṞflâfiaeẘNJĂḎ ṈĀ)’ (SNUC). Paratypes: 10 males, 6 females, same data as holotype; 4 males, 7 females, same data except ‘Langjicuo, 28°24′10″N, 85°23′58″E, 4000–4100 m, 21.vi.2021. (ƱAEƋṞflâfiaeḇâDzờā)’.
Diagnosis. Body dark reddish brown; head with non-umbilicate punctation; abdominal tergites lacking microsculpture; aedeagal ventral process very long, with acute apex in ventral view; dorso-lateral apophyses with narrow apex in ventral view, not reaching apex of ventral process.
Description. Body length 4.1–5.2 mm, forebody length 2.4–2.6 mm.
Body (Fig. 1E) dark reddish brown; antennae and legs yellowish brown.
Head (Fig. 2E) 1.03–1.06 times as long as wide; punctation moderately dense, very coarse, non-umbilicate and not confluent, interstices lacking microsculpture; posterior portion 1.7–1.9 times as long as eye length.
Pronotum (Fig. 2E) 1.06–1.15 times as long as wide, 0.89–0.95 times as long and 0.84–0.86 times as broad as head; punctation similar to that of head; midline posterior with short and very narrow impunctate elevation; interstices lacking microsculpture.
Elytra (Fig. 2E) 0.58–0.68 times as long as wide, 0.53–0.65 times as long and 1.03–1.09 times as broad as pronotum; punctation similar to that of pronotum; interstices lacking microsculpture.
Abdomen (Fig. 1E) with punctation dense and rather coarse on tergites III–IV, dense and less coarse on tergites V–VI, moderately dense and fine on tergites VII–VIII; interstices lacking microsculpture.
Male. Sternite VII (Fig. 7A) with posterior margin shallowly emarginated in the middle, and with shallow postero-median impression, on either side of this impression with a tuft of dense dark setae. Sternite VIII (Fig. 7B) with V-shaped posterior excision.Aedeagus (Figs 7C–F) with ventral process very long and narrow, with acute apex in ventral view; dorso-lateral apophyses slender, slightly curved near apex in ventral view, not reaching apex of ventral process.
Distribution and habitat. The species is known from Gyirong County in southern Xizang (Fig. 10K). The specimen was collected by sifting leaf litter at altitudes of 3000–4100 m.
Comparative notes. This species is similar to N. hirsutiventris Assing, 2014 in general appearance and aedeagus characters, but can be separated by the round apex of dorso-lateral apophyses (Figs 7C, D), and the narrower apex of ventral process of aedeagus in lateral view (Figs 7E, F).
Etymology. The specific epithet ‘ gladius (sword)’ is a Latin noun referring to the special ventral process of aedeagus.
description: Published as part of Gao, Zhuo-Qun, Da, Wa & Hu, Jia-Yao, 2023, The Nazeris fauna in Xizang, China (Coleoptera, Staphylinidae, Paederinae), pp. 131-145 in Zootaxa 5369 (1) on page 139, DOI: 10.11646/zootaxa.5369.1.7, http://zenodo.org/record/10144947