Nazeris nanlingensis Hu, Luo & Li, 2018

Hu, Jia-Yao, Luo, Yong-Ting & Li, Li-Zhen, 2018, New species and record of Nazeris Fauvel in southern China (Coleoptera, Staphylinidae, Paederinae), Zootaxa 4429 (1), pp. 173-180 : 177-178

Nazeris nanlingensis Hu, Luo & Li , sp. n.

( Figs 7 , 14–18 )

Type material. Holotype: CHINA: male: ‘ China: Guangdong Prov., Ruyuan, Nanling N. R., Shikengkong , 24°55′33″N, 112°59′29″E, bamboo forest, leaf litter, sifted, 1820 m, 30.IV.2015, Peng, Tu, Zhou leg.’ ( SNUC) . Paratypes: 15 males, 10 females, same data as holotype ; 2 males, 1 female, same data, except ‘ 1100 m, 14.VIII.2008, Nan Qi & Zi-Wei Yin leg.’ ; 1 male, same data, except ‘ Shikengkong , 24°55′38″N, 112°59′30″E, bamboo forest, leaf litter, sifted, 1850 m, 27.IV.2015, Peng, Tu, Zhou leg.’ ; 1 male, 1 female, same data, except ‘ Hamashi , 24°55′37″N, 112°59′21″E, mixed forest, leaf litter, sifted, 1750 m, 1.V.2015, Peng, Tu, Zhou leg.’ ; 5 males, 2 females, same data, except ‘ Disilindao , 24°55′47″N, 112°59′50″E, mixed forest, leaf litter, wood, sifted, 1500 m, 5.V.2015, Peng, Tu, Zhou leg.’ ; 2 males, 1 female, ‘ China: Hunan, Chenzhou, Yizhang, Mangshan N. R. 24°56′26″N, 112°59′18″E, mixed forest, leaf litter, wood, sifted & beating, 1400 m, 26.IV.2015, Peng, Tu, Zhou leg.’ .

Description. Body length 3.8–4.4 mm; forebody length 2.1–2.4 mm.

Body ( Fig. 7 ) reddish brown; antennae and legs yellowish brown.

Head ( Fig. 14 ) approximately as long as wide; punctation moderately dense, moderately coarse, distinctly umbilicate and partly confluent, interstices lacking microsculpture; postocular portion approximately 1.5 times as long as eye length.

Pronotum ( Fig. 14 ) 1.08–1.14 times as long as wide, approximately as long and 0.87–0.89 times as broad as head; punctation non-umbilicate, moderately dense and as coarse as that of head; midline posteriorly with short and very narrow impunctate elevation; interstices lacking microsculpture.

Elytra ( Fig. 14 ) 0.63–0.65 times as long as wide, 0.53–0.58 times as long and 0.96–0.99 times as broad as pronotum; punctation as dense as, and slightly less coarse than 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. 15 ) with posterior margin shallowly concave in the middle. Sternite VIII ( Fig. 16 ) with triangular posterior excision. Aedeagus ( Figs 17, 18 ) with ventral process distinctly broad in apical half and apex shallowly concave in the middle in ventral view, with pair of wing-like basal laminae ventrally; dorso-lateral apophyses very slender, distinctly curved near apex in ventral view, extending beyond apex of ventral process.

Distribution and habitat. The species is known from Nanling in northern Guangdong and Mangshan in southern Hunan. The specimens were collected by sifting leaf litter at altitudes of 1100 –1850 m.

Comparative notes. The new species is very similar to N. rubidus from the same locality in general appearance and aedeagal characters, but can be separated by the smaller forebody size; less dense punctation of the head and pronotum ( Figs 14 ); wider ventral process and slenderer dorso-lateral apophyses of the aedeagus in ventral view ( Fig. 17 ).

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

Figures

FIGURES 6–8. Habitus of new species 6—Nazeris rubidus; 7—N. nanlingensis; 8—N. gaoleii. Scale bars: 1 mm.

FIGURES 14–18. Nazeris nanlingensis 14—forebody; 15—male sternite VII; 16—male sternite VIII; 17—aedeagus, in ventral view; 18—aedeagus, in lateral view. Scale bars: 14: 1 mm, 15–18: 0.5 mm.