Nazeris huaiweni Lin & Hu, 2021

Lin, Xiao-Bin & Hu, Jia-Yao, 2021, The Nazeris fauna of the Nanling Mountain Range, China (Coleoptera, Staphylinidae, Paederinae), ZooKeys 1059, pp. 117-133 : 117

Nazeris huaiweni Lin & Hu sp. nov.

Figs 2 , 10-14 , 27

Type material.

Holotype: China: ♂: "China: Guangdong, Shaoguan, Nanling N. R., 24°56'38"N, 112°59'31"E, 1316-1575 m, 29.vi.2020, Xia, Zhang, Yin and Lin leg." (SNUC). Paratypes: 2 ♀♀, same data, except "Ruyuan, Nanling, nr. Ruyang, Xiaohuangshan, 24°53'44.7"N, 113°1'26.9"E, 1270-1570 m, 2021.v.02, Hu, Lin, Zhou and Li leg." (SNUC).

Description.

Body length 6.2-6.8 mm; forebody length 3.2-3.3 mm.

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

Head (Fig. 10 ) approximately as long as wide; punctation very dense, moderately coarse, distinctly umbilicate, interstices lacking microsculpture; postocular portion approximately twice as long as eye length.

Pronotum (Fig. 10 ) 1.12-1.21 times as long as wide, 0.93-1.02 times as long and 0.83-0.84 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. 10 ) 0.67-0.76 times as long as wide, 0.69-0.71 times as long and 1.03-1.12 times as broad as pronotum; punctation slightly denser and coarser 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. 11 ) with posterior margin truncate at middle. Sternite VIII (Fig. 12 ) with triangular posterior excision. Aedeagus (Figs 13 , 14 ) with ventral process gradually narrowed in apicad half, with acute apex in ventral view or lateral view, with pair of wing-like basal laminae ventrally; dorso-lateral apophyses moderately slender, slightly widened near middle and apices in ventral view, not reaching apex of ventral process.

Distribution and habitat data.

The species is known only from Nanling in northern Guangdong (Fig. 27 ). The specimens were collected by sifted leaf litter at altitudes of 1270-1575 m.

Comparative notes.

The new species is very similar to N. divisus Hu & Li, 2015 in general appearance, but can be separated by the wider and shallower posterior excision of male sternite VIII (Fig. 12 ), by the ventral process with acute apex (Fig. 13 ), and by the wider dorso-lateral apophyses of aedeagus (Fig. 13 ).

Etymology.

The species is named in honor of Huai-Wen Wang (Administration of Nanling National Nature Reserve) who helped a lot during our collection in Nanling.

Figures

Figure 27. Map showing the distribution of Nazeris in Nanling Mountain Range A N. inaequalis B N. rubidus C N. nanlingensis D N. gaoleii E N. huaiweni F N. obtortus G N. huapingensis H N. alatus I N. exilis J N. chenyanae K N. latilobatus L N. maoershanus M N. rugosus N N. yuyimingi O N. biacuminatus P N. yanzhuqii Q N. xingmini R N. meihuaae S N. lichongi.

Figures 1 - 4. Male habitus of Nazeris spp 1 N. xingmini 2 N. huaiweni 3 N. meihuaae 4 N. lichongi. Scale bars: 1.0 mm.

Figures 10 - 14. Nazeris huaiweni 10 forebody 11 male sternite VII 12 male sternite VIII 13 aedeagus in ventral view 14 aedeagus in lateral view. Scale bars: 1.0 mm (10); 0.5 mm (11 - 14).