Nazeris gyirongensis, Gao & Da & Hu, 2023

Gao, Zhuo-Qun, Da, Wa & Hu, Jia-Yao, 2023, The Nazeris fauna in Xizang, China (Coleoptera, Staphylinidae, Paederinae), Zootaxa 5369 (1), pp. 131-145 : 140-142

publication ID	https://doi.org/ 10.11646/zootaxa.5369.1.7
publication LSID	lsid:zoobank.org:pub:9DCFA15A-538D-446C-B468-44276FBB60D3
DOI	https://doi.org/10.5281/zenodo.10166580
persistent identifier	https://treatment.plazi.org/id/03CC87CF-FFF1-855D-0DAD-F9AAFB75FEFA
treatment provided by	Plazi
scientific name	Nazeris gyirongensis
status	sp. nov.

Treatment

Nazeris gyirongensis sp. n.

Figs 1F View FIGURE 1 , 2F View FIGURE 2 , 8A–F View FIGURE 8 , 10L View FIGURE 10

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) GoogleMaps . Paratypes: 1 female, same data as holotype GoogleMaps ; 1 male, same data except ‘pass nr. Ru Kupuqiong, 28°25′47″N, 85°15′50″E, 3000 m, 20.vi.2021. (ƱAEƋṞflâfiaeẘNJĂḎṈĀ)’. GoogleMaps

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 View FIGURE 1 ) dark reddish brown; antennae and legs yellowish brown.

Head ( Fig. 2F View FIGURE 2 ) 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 View FIGURE 2 ) 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 View FIGURE 2 ) 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 View FIGURE 1 ) 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 View FIGURE 8 ) 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 View FIGURE 8 ) with triangular posterior excision. Aedeagus ( Figs 8C–F View FIGURE 8 ) 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. View FIGURE 10

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 View FIGURE 8 ), and the broader apex of ventral process of aedeagus in ventral view ( Fig. 8C, D View FIGURE 8 ).

Etymology. The specific epithet is derived from the name of the type locality: Gyirong.