Nazeris jifuensis sp. n.

Figs 1C, 2C, 5A–F, 10I

Type material. Holotype: CHINA: male, ‘ China: Xizang, Gyirong County, Gyirong Valley, slope nr. Jifu Vill. 28°22′37″N, 85°19′41″E, 2400–2700 m, 21.vi.2021, Z. Peng, Z. Yin & W. Zhang leg. (ƱAEƋṞflâfiaeâffin' ṈĀƜȇ)’ (SNUC) . Paratypes: 1 female, same data as holotypes; 3 females, same data, except ‘pass nr. Jifu Vill. 28°21′35″N, 85°20′46″E, 2600–2700 m, 19.vi.2021 ’.

Diagnosis. Body dark brown; head with umbilicate punctation; abdominal tergites lacking microsculpture; aedeagal ventral process with triangular concave at apex in ventral view; dorso-lateral apophyses with wide apex in ventral view, not reaching apex of ventral process.

Description. Body length 6.3–6.7 mm; forebody length 3.3–3.4 mm.

Body (Fig. 1C) dark brown; antennae and legs yellowish brown.

Head (Fig. 2C) 1.02–1.08 times as long as wide, punctation very dense, moderately coarse, not distinctly umbilicate and partly confluent, interstices lacking microsculpture; postocular portion 1.9–2.1 times as long as eye length.

Pronotum (Fig. 2C) 1.14–1.20 times as long as wide, 0.94–0.97 times as long and 0.84–0.87 times as broad as head; punctation non-umbilicate, very dense and moderately coarse; midline lacking impunctate elevation; interstices lacking microsculpture.

Elytra (Fig. 2C) 0.65–0.73 times as long as wide, 0.53–0.66 times as long and 0.99–1.04 times as broad as pronotum; punctation as dense as, and less coarse than that of pronotum; interstices lacking microsculpture.

Abdomen (Fig. 1C) with punctation dense and coarse on tergite III–VI, dense and less coarse on tergite VII– VIII; interstices lacking microsculpture.

Male. Sternite VII (Fig. 5A) with posterior margin shallowly emarginated in the middle. Sternite VIII (Fig. 5B) with triangular posterior excision. Aedeagus (Figs 5C–F) moderately sclerotized; ventral process wide, with triangular concave at apex in ventral view; dorsal-lateral apophyses slender, distinctly widened and curved near apex in ventral view, not reaching apex of ventral process.

Distribution and habitat. The species is known only from Gyirong County in southern Xizang (Fig. 10I). The specimen was collected by sifting leaf litter at altitudes of 2400–2700 m.

Comparative notes. The new species is similar in general appearance and aedeagus to N. elegans Coiffait, 1975, but can be separated by smaller body size (body length 6.8–7.3 mm in N. elegans); the wider apex and deeper apical concave of ventral process of aedeagus in ventral view (Figs 5C, D).

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