Nazeris yaoluopingus, Miao & Hu, 2020

Miao, Zheng-Yi & Hu, Jia-Yao, 2020, New data of Nazeris Fauvel in Anhui, China (Coleoptera, Staphylinidae, Paederinae), Zootaxa 4896 (2), pp. 277-282 : 280

Nazeris yaoluopingus , sp. n.

( Figs 1–6 )

Type material. Holotype: China: male: ‘ China: An’hui , Yuexi County, Yaoluoping N. R., Duozhijian , 30°58′38″N, 116°06′59″E, beech forest, mixed leaf litter, humus, sifted, 1650 m, 19.VI.2013, Dai & Peng leg.’ ( SNUC). Paratypes: 3 males, 2 females, same data as holotype; 3 males, 3 females, same data, except ‘ 30°59′25″N, 116°04′46″E, on dead wood with Polypores, coll. by hand, 1050 m, 17.VI.2013, Dai & Peng leg.’; 1 male, 4 females, ‘ China: Anhui, Anqing City, Yuexi Co. , Baojiaxiang, Yaoluoping N. R., 30°59’24.17”N, 116° 6’10.36”E, 1200m, 16.X.2019, sifted, Li, Ma, Miao, Pan, Wang & Zhao leg.’; 8 males, 6 females, ‘ China: Anhui, Anqing City, Yuexi Co. , Baojiaxiang, Yaoluoping N. R., 30°58’51.31”N, 116°7’0.57”E, 1600m, 17.X.2019, sifted, Li, Ma, Miao, Pan, Wang & Zhao leg.’.

Description. Body length 4.2–4.9mm; forebody length 2.4–2.7mm.

Body ( Fig.1, 2 ) reddish brown; abdomen dark brown; antennae and legs yellowish brown.

Head ( Fig.1, 2 ) 1.02–1.09 times as long as wide; punctation dense and coarse, non-umbilicate, interstices lacking microsculpture; postocular portion approximately twice as long as eye length.

Pronotum ( Fig. 1, 2 ) 1.11–1.29 times as long as wide, 0.94–1.06 times as long and 0.83–0.91 times as broad as head; punctation non-umbilicate, moderately dense and as coarse as that of head; midline lacking impunctate elevation; interstices without microsculpture.

Elytra ( Fig. 1, 2 ) 0.64–0.69 times as long as wide, 0.51–0.61 times as long and 0.99–1.06 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, dense and less coarse on tergite VI–V, moderately dense and fine on tergites VI–VIII; interstices lacking microsculpture.

Male. sternite VII ( Fig. 3 ) shallowly depressed in posterior middle, with truncate posterior margin. Sternite VIII ( Fig. 4 ) with V-shaped posterior excision. Aedeagus ( Fig. 5, 6 ) with ventral process constricted in basal third, with pair of small basal laminae ventrally; dorso-lateral apophyses weakly curved in ventral view, wide and nearly straight in lateral view, with pointed apex, extending slightly beyond apex of ventral process.

Comparative notes. The new species is most similar to N. cultellatus Assing ( Assing 2013: 23, Figs 93–99) in general appearance and aedeagal characters, but can be separated by the more reddish body ( Fig. 1 ), by sternite VII shallowly depressed in posterior middle ( Fig. 3 ), by the wider dorso-lateral apophyses of aedeagus in lateral view, with pointed apex ( Fig. 6 ). The new species can also be separated with N. anhuiensis by the abdomen lacking microsculpture (according to the original description, abdomen of N. anhuiensis with fine microsculpture). Moreover, distribution of these two species are separated by the Changjiang River, which is a wide gap for these micropterous species.

Distribution and habitat data. The species is known only from Yaoluoping N. R. in southwest Anhui. The specimens were collected by sifting mixed leaf litter and on dead wood at altitudes of 1050–1650 m.

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

Figures

FIGURES 1–2. N. yaoluopingus 1. habitus; 2. forebody. Scale bars: 1 mm

FIGURES 3–6. N. yaoluopingus 3. male sternite VII; 4. male sternite VIII; 5. aedeagus, in ventral view; 6. aedeagus, in lateral view. Scale bars: 0.25 mm