Nazeris songi Ma, Miao & Hu, 2021

Ma, Wen-Jing, Miao, Zheng-Yi & Hu, Jia-Yao, 2021, New data of Nazeris Fauvel from the Dayao Mountains, Guangxi, China (Coleoptera, Staphylinidae, Paederinae), Zootaxa 5016 (4), pp. 579-587 : 583-584

Nazeris songi Ma, Miao & Hu , sp. n.

( Figs 2 , 9–13 , 19 )

Type material. Holotype: China: male: ‘ China : Guangxi, Jinxiu County, ‘7 km’, 24°09′07″N, 110°12′29″E, mixed leaf litter, sifted, 1300 m, 16.VII.2014, Peng, Song, Yu & Yan leg.’ ( SNUC) . Paratype: 1 female, same data as holotype .

Description. Body length 7.0– 7.1 mm; forebody length 3.8–3.9 mm.

Body ( Fig. 2 ) dark brown; antennae and legs yellowish brown.

Head ( Fig. 9 ) 1.03–1.06 times as long as wide; punctation very dense, moderately coarse, distinctly umbilicate and partly confluent, interstices lacking microsculpture; postocular portion 1.7 times as long as eye length.

Pronotum ( Fig. 9 ) 1.18–1.19 times as long as wide, 0.94–0.99 times as long and 0.84–0.86 times as broad as head; punctation non-umbilicate, moderately dense and as coarse as that of head; midline posteriorly with short and narrow impunctate elevation; interstices without microsculpture.

Elytra ( Fig. 9 ) 0.59–0.62 times as long as wide, 0.55–0.56 times as long and 1.08–1.12 times as broad as pronotum; punctation as dense and coarse as that of pronotum; interstices lacking microsculpture.

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

Male. Sternite VII ( Fig. 10 ) with posterior margin semi-circularly emarginated at middle. Sternite VIII ( Fig. 11 ) with V-shaped posterior excision. Aedeagus ( Figs 12, 13 ) well sclerotized, ventral process wide and long, gradually narrower to apex in ventral view, with pair of triangular basal laminae ventrally; dorso-lateral apophyses very slender and slightly curved in ventral view, not reaching apex of ventral process.

Distribution and habitat data. The species is known only from the Dayao Mountains in middle Guangxi. The specimens were collected by sifting leaf litter at an altitude of 1,300 m.

Comparative notes. The new species is very similar to N. megalobus Hu & Li (in Hu et al. 2012: 421, Figs 25–30) in general appearance and aedeagal characters from the same locality, but can be separated by the following characters: punctation of head partly confluent; ventral process of aedeagus wider in ventral view; dorso-lateral apophyses much shorter and slender.

Etymology. The species is named in honor of Xiao-Bin Song, who collected one of the type specimens.

Figures

FIGURE 19. Map showing the distribution of Nazeris in Guangxi A—N. dayaoensis; B—N. luoi; C—N. tani; D—N. qini; E—N. megalobus; F—N. grandis; G—N. shengtangus; H—N. songi; I—N. curvilaminatus; J—N. damingshanus; K—N. longilobus; L—N. bihamatus; M—N. latilobatus; N—N. maoershanus; O—N. rugosus; P—N. yuyimingi; Q—N. biacuminatus; R—N. yanzhuqii; S—N. obtortus; T—N. huapingensis; U—N. alatus; V—N. exilis; W—N. chenyanae; X—N. fulongensis.

FIGURES 1–3. Habitus 1—Nazeris shengtangus; 2—N. songi; 3—N. curvilaminatus. Scale bars: 1 mm.

FIGURES 9–13. Nazeris songi 9—forebody; 10—male sternite VII; 11—male sternite VIII; 12—aedeagus, in ventral view; 13—aedeagus, in lateral view. Scale bars: 0.5 mm