Nazeris zhaotongus Yang & Hu, 2025

Nazeris zhaotongus Yang & Hu sp. nov.

Figs 1B View FIGURE 1 , 3A–G View FIGURE 3

Type material. Holotype: CHINA: male: “China: Yunnan, Zhaotong, Sanjiangkou N. R. , Wumeng Mt. , Laziping , 28°12’25.7’’N, 103°54’49.4’’E, 1952m, 15.vii.2023, Wei Guohao leg. [云南省Dzdz市三江口保护区乌ae山OiŦ 坪]” ( SNUC). GoogleMaps

Diagnosis. Body reddish brown; head with umbilicate punctation; abdomen with fine microsculpture on all tergite; aedeagal ventral process widened near middle in ventral view, with small triangular excision at apex; dorso-lateral apophyses wide, with round apex in ventral view, not reaching apex of ventral process.

Description. Body length 5.8 mm; forebody length 2.9 mm.

Body ( Fig. 1B View FIGURE 1 ) reddish brown; antennae and legs yellowish brown.

Head ( Fig. 3A View FIGURE 3 ) 1.08 times as long as wide; punctation moderately dense and coarse, distinctly umbilicate, but not confluent, interstices lacking microsculpture; postocular portion approximately 1.9 times as long as eye length.

Pronotum ( Fig. 3A View FIGURE 3 ) 1.17 times as long as wide, as long as and 0.92 times as broad as head; punctation non-umbilicate, moderately dense, less coarse than that of head; midline with long and narrow impunctate elevation; interstices lacking microsculpture.

Elytra ( Fig. 3A View FIGURE 3 ) 0.72 times as long as wide, 0.57 times as long and 0.92 times as broad as pronotum; punctation more dense and less coarse than that of pronotum; interstices lacking microsculpture.

Abdomen with punctation dense and rather coarse on tergites III–IV, dense and less coarse on tergite V, moderately dense and fine on tergites VI–VIII; with fine microsculpture on all tergites.

Male. Sternite VII ( Fig. 3B View FIGURE 3 ) with posterior margin slightly protruding in middle. Sternite VIII ( Fig. 3C View FIGURE 3 ) with triangular posterior excision. Aedeagus ( Figs 3D–G View FIGURE 3 ) moderately sclerotized; ventral process widened near middle in ventral view, with small triangular excision at apex; dorso-lateral apophyses wide, with round apex in ventral view, not reaching apex of ventral process.

Distribution and habitat data. The species is known only from Wumengshan N. R. in northeast Yunnan. The specimen was collected by sifting leaf litter at an altitude of 1952 m.

Comparative notes. The new species is distinguished from all the known species of Nazeris from Yunnan and adjacent area by the abdomen with fine microsculpture on all tergites; by the sternite VII with posterior margin slightly protrude in the middle ( Fig. 3B View FIGURE 3 ); and by the wide dorso-lateral apophyses in ventral view ( Figs 3D, E View FIGURE 3 ).

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