Nazeris gyirongensis 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 gyirongensis

description: Nazeris gyirongensis sp. n.
Figs 1F, 2F, 8A–F, 10L
Type material. Holotype: CHINA: male, ‘ China: Xizang, Gyirong County, Gyirong Valley, pass nr. Jifu Vill. 28°21′35″N, 85°20′46″E, 2600–2700 m, 19.vi.2021, Z. Peng, Z. Yin & W. Zhang leg. (ƱAEƋṞflâfiaeâffin' ṈĀƜȇ)’ (SNUC). Paratypes: 1 female, same data as holotype; 1 male, same data except ‘pass nr. Ru Kupuqiong, 28°25′47″N, 85°15′50″E, 3000 m, 20.vi.2021. (ƱAEƋṞflâfiaeẘNJĂḎṈĀ)’.
Diagnosis. Body dark reddish brown; head with non-umbilicate punctation; abdominal tergites lacking microsculpture; aedeagal ventral process with round apex in ventral view; dorso-lateral apophyses with round apex in ventral view, not reaching apex of ventral process.
Description: Body length 4.0– 4.3 mm; forebody length 2.2–2.3 mm.
Body (Fig. 1F) dark reddish brown; antennae and legs yellowish brown.
Head (Fig. 2F) 1.03–1.07 times as long as wide; punctation moderately dense, very coarse, non-umbilicate and not confluent, interstices lacking microsculpture; postocular portion approximately twice as long as eye length.
Pronotum (Fig. 2F) 1.13–1.15 times as long as wide, 0.89–0.95 times as long and 0.85–0.86 times as broad as head; punctation non-umbilicate, less dense and as coarse as that of head; midline posteriorly with short and very narrow impunctate elevation; interstices lacking microsculpture.
Elytra (Fig. 2F) 0.65–0.72 times as long as wide, 0.59–0.65 times as long and 1.01–1.04 times as broad as pronotum; punctation as dense as, and less coarse than that of pronotum; interstices lacking microsculpture.
Abdomen (Fig. 1F) 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. 8A) with posterior margin truncate at middle, and with shallow postero-median impression, on either side of this impression with a tuft of dense dark setae. Sternite VIII (Fig. 8B) with triangular posterior excision. Aedeagus (Figs 8C–F) moderately sclerotized; ventral process long, with round apex in ventral view; dorso-lateral apophyses very slender, slightly curved, not reaching apex of ventral process.
Distribution and habitat data. The species is known only from Gyirong County in southern Xizang (Fig.
10L). The specimen was collected by sifting leaf litter at altitudes of 2600–3000 m.
Comparative notes. The new species is most similar to N. flexus Assing, 2014 in general appearance and aedeagus characters, but can be separated by the male sternite VII with truncate posterior margin (Fig. 8A), and the broader apex of ventral process of aedeagus in ventral view (Fig. 8C, D).
Etymology. The specific epithet is derived from the name of the type locality: Gyirong.
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 pages 140-142, DOI: 10.11646/zootaxa.5369.1.7, http://zenodo.org/record/10144947