Nazeris meihuaae 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 meihuaae Lin & Hu sp. nov.

Figs 3 , 15-21 , 27

Type material.

Holotype: China: ♂: "China: Guangdong Prov., Shixing County, Chebaling N. R., 24°40'41.82"N, 114°10'20.42"E, 1067 m, 20.viii.2020, Liang Tang leg." (SNUC). Paratypes: 5 ♂♂, 18 ♀♀, same data as holotype; 3 ♂♂, 8 ♀♀, same data, except "872 m, 20.viii.2020"; 2 ♀♀, "China: Guangdong Prov., Shixing County, Chebaling N. R., 24°40'58"N, 114°10'14"E, 468-870 m, 24.vi.2020, Xia, Zhang, Yin and Lin leg."; 6 ♂♂, 3 ♀♀, "China: Jiangxi Prov., Longnan County, Jiulianshan N. R., 24°30'10"N, 114°26'35"E, 795 m, 18.viii.2020, Liang Tang leg."; 1 ♂, 2 ♀♀, "China: Jiangxi Prov., Longnan County, Jiulianshan N. R., 24°30'10.43"N, 114°26'35.28"E, leaf litter, sifted, 1253 m, 17.viii.2020, Liang Tang leg."; 5 ♂♂, 1 ♀, "China: Jiangxi Prov., Longnan County, Jiulianshan, Huangniushi, 24°31'22.7"N, 114°25'3.6"E, 600-1000 m, 10.v.2021, C.-L. Zhou & C. Li leg."; 3 ♀♀, "China: Jiangxi Prov., Longnan County, Jiulianshan, summit of Huangniushi, 24°30'53"N, 114°26'6.72"E, 1000-1230 m, 12.v.2021, Zhou and Li leg."; 1 ♂, "China: Jiangxi Prov., Longnan County, Jiulianshan, summit of Huangniushi, 24°30'53"N, 114°26'6.72"E, 1,000-1,230 m, 12.v.2021, Zhou and Li leg." (SNUC).

Description.

Body length 4.1-4.8 mm; forebody length 2.2-2.6 mm.

Body (Fig. 3 ) reddish brown; antennae and legs yellowish brown.

Head (Fig. 15 ) 0.97-1.03 times as long as wide; punctation very dense, moderately coarse, distinctly umbilicate and partly confluent, interstices lacking microsculpture; postocular portion approximately 1.5-2.1 times as long as eye length.

Pronotum (Fig. 15 ) 1.05-1.23 times as long as wide, 0.91-1.10 times as long and 0.83-0.87 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. 15 ) 0.61-0.75 times as long as wide, 0.54-0.66 times as long and 0.97-1.10 times as broad as pronotum; punctation as dense as, and slightly 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. 16 ) with posterior margin shallowly emarginate in the middle. Sternite VIII (Fig. 17 ) with wide triangular posterior excision. Aedeagus (Figs 18-21 ) with ventral process short, widened near middle in ventral view, with pair of finger-like basal laminae ventrally; dorso-lateral apophyses distinctly curved and widened in apical third in ventral view, extending beyond apex of ventral process.

Distribution and habitat data.

The species is known from Chebaling in northern Guangdong and Jiulianshan in southern Jiangxi (Fig. 27 ). The specimens were collected by sifting leaf litter at altitudes of 468-1253 m.

Comparative notes.

This species is very similar in general appearance and aedeagal characters to N. pengzhongi Hu & Li, 2015, but can be separated by the finger-like basal laminae of the ventral process and the longer dorso-lateral apophyses of the aedeagus (Figs 18 , 20 ). The new species is also similar in general appearance to N. rubidus and N. nanlingensis , but can be separated by the distinctly longer laminae of the ventral process and the apically wider dorso-lateral apophyses of the aedeagus (Figs 18 , 20 ). Compared with the holotype from Chebaling, Guangdong (Figs 18 , 19 ), the specimens from Jiulianshan, Jiangxi (Figs 20 , 21 ) display a slightly shorter ventral process and slightly narrower apices of the dorso-lateral apophyses of the aedeagus. Based on the similar general appearance and male sternites, these aedeagal differences are treated as intraspecific variation.

Etymology.

The species is named in honor of Mei-Hua Xia, who collected some of the type specimens.

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 15 - 21. Nazeris meihuaae (15 - 19 specimen from Chebaling 20 - 21 specimen from Jiulianshan) 15 forebody 16 male sternite VII 17 male sternite VIII 18, 20 aedeagus in ventral view 19, 21 aedeagus in lateral view. Scale bars: 1.0 mm (15); 0.5 mm (16 - 21).