Nazeris chenyanae Hu & Li, 2017

Li, Li-Zhen, 2017, Four new species of Nazeris Fauvel in Guangxi, China (Coleoptera, Staphylinidae, Paederinae), Zootaxa 4312 (2), pp. 333-342 : 339

Nazeris chenyanae Hu & Li , sp. n.

( Figs 9 , 25–30 )

Type material. Holotype: CHINA: male: " China: Guangxi Prov., Lingui County, Huaping N. R., Anjiangping , 1200 m, 13.VII.2011, Zhu, Chen & Ma leg." ( SNUC).

Description. Body length 6.7 mm; forebody length 3.2 mm.

Body ( Fig. 9 ) dark brown; antennae and legs yellowish brown.

Head ( Fig. 25 ) 1.03 times as long as wide; punctation very dense, moderately coarse, distinctly umbilicate, interstices without microsculpture; postocular portion approximately twice as long as eye length.

Pronotum ( Fig. 25 ) 1.18 times as long as wide, approximately as long and 0.89 times as broad as head; punctation non-umbilicate, moderately dense and as coarse as that of head; midline posteriorly with very short and narrow impunctate elevation; interstices without microsculpture.

Elytra ( Fig. 25 ) 0.69 times as long as wide, 0.59 times as long and as broad as pronotum; punctation as dense as, and less coarse than that of pronotum; interstices without microsculpture.

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

Male. Sternite VII ( Fig. 26 ) with posterior margin truncate at middle. Sternite VIII ( Fig. 27 ) with V-shaped posterior excision. Aedeagus ( Figs 28, 29 ) moderately sclerotized; ventral process long, dorsal parts widened near middle and at apex in ventral view, with pair of triangular basal laminae ventrally; dorso-lateral apophyses slender, extending slightly beyond apex of ventral process.

Distribution and habitat data. The species is known only from Huaping in northeast Guangxi ( Fig. 30 ). The specimen was collected by sifting leaf litter at an altitude of 1200 m.

Comparative notes. The new species is similar in general appearance and aedeagal characters to N. shaanxiensis Hu, Li & Zhao , but can be separated by denser and coarser punctation of the pronotum a wider ventral process of the aedeagus ( Fig. 28 ), and by narrower and longer dorso-lateral apophyses ( Figs 28 ).

Etymology. The species is named in honor of Yan Chen, who collected some of the type specimens.

Figures

FIGURE 30. 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. damingshanus; H – N. longilobus; I – N. bihamatus; J – N. latilobatus; K – N. obtortus; L – N. huapingensis; M – N. alatus; N – N. exilis; O – N. chenyanae.

FIGURES 6 – 9. Habitus of new species 6 – Nazeris huapingensis; 7 – N. alatus; 8 – N. exilis; 9 – N. chenyanae. Scale bars: 1 mm.

FIGURES 25 – 29. Nazeris chenyanae 25 – forebody; 26 – male sternite VII; 27 – male sternite VIII; 28 – aedeagus, in ventral view; 29 – aedeagus, in lateral view. Scale bars: 25: 1 mm, 26 – 29: 0.5 mm