Sathytes communis Shen & Yin, 2020

Shen, Qi & Yin, Zi-Wei, 2020, Five new species and a new record of Sathytes Westwood from eastern China (Coleoptera: Staphylinidae: Pselaphinae), Zootaxa 4751 (2), pp. 386-394 : 387

Sathytes communis Shen & Yin , sp. nov.

( Fig. 1 )

Type material (102 exx). HOLOTYPE: CHINA : ♂, ‘ China: Zhejiang, Quzhou City (ınjhv), Kaihua Country (ƛƙe), Gutianshan N. R. (+田Ɯ.9fyņ), 29°14’41.72”N, 118°07’1.63”E, alt. 420 m, mixed leaf litter, sifted, 15.viii.2018, Cheng & Miao leg.’ ( SNUC) . PARATYPES (all in SNUC): CHINA : 1 ♂, ‘ China: Anhui Prov., Huangshan City (黄Ɯhv), Huangshan (黄Ɯ), Jiulong Waterfall (HẄae), alt 460-910 m, 26.xi.2011, PENG Zhong leg. ’; 18 ♂♂, 19 ♀♀, same label data as holotype; 2 ♂♂, 5♀♀, same label data as holotype, except for ‘ 28°19’39.60”N, 118°40’36.93”E, alt. 461 m, 14.viii.2018 ’; 5 ♂♂, 12 ♀♀, same label data except for ‘ 14.viii.2018 ’; 3 ♂♂, 3♀♀, same label data as holotype, except for ‘N. Zhejiang, 29°14’54”N, 118°07’14”E, 500–800 m, 21.vi.2013, Xie, Lü & Yu leg. ’; 1 ♀, same label data as holotype, except for ‘N. Zhejiang, 29°14’54”N, 118°06’52”E, 400–500 m, 19.vi.2013, Zheng & Li leg. ’; 1 ♂ 1 ♀, same label data as holotype, except for ‘N. Zhejiang, 29°14’54”N, 118°06’52”E, 400-500 m, 19.vi.2013, Song leg. ’; 1 ♂, ‘ China: Zhejiang Prov., Lin’an City (DZ Ẩhv), Qiangqing Mt. ( ŦNJƜ), Lelifeng (ṃNjẘ), 17.v.2012, 1200 m, Chen, Ma & Zhao leg. ’; 1 ♂, ‘ China: Zhejiang Prov., Lin’an City, Shunxiwu (ḤAEnj), 18.v.2012, 380– 550 m, Chen, Ma & Zhao leg. ’; 2 ♂♂, ‘ China: Zhejiang Prov., Lin’an City, West Tianmushan ( MƑHƜ), 18.viii. 2008, 300 m, HU & TANG leg .’; 2 ♂♂ 4 ♀♀, ‘ China: S. Zhejiang, Li- shui City (ṀẈhv), Longquan (ŶḆhv), Fengyangshan N. R. (ḤṚƜƦṂOiṖṈ), forest nr. Jitou Vil. (NJ ẆÙ), 27°55’58”N, 119°12’44”E, fern, silvergrass, fir, sifted, ca. 1050 m, 9.x.2013, Z. Peng, Y.-M. Yu, Z-W. Yin leg. ’; 3 ♂♂, 2 ♀♀, ‘ China: Zhejiang Province, Zhuji City (aeDzhv), Majian Town (ḨḢDz), Dashan ( AƜ), shrub, sweeping, 150 m, 8.ix.2013, Tie-Xiong Zhao leg. ’; 2 ♂♂, same label data except for ‘mixed forest, leaf litter, sifted, 300 m, 20.viii.2013 ’; 1 ♂, same label data except for ‘C. Zhejiang, 29°29’11”N, 120°23’54”E, leaf litter, sifted, 300 m, 20.x.2012 ’; 1 ♂, same label data except for ‘mixed forest, leaf litter, sifted, 4.x.2013 ’; 1 ♂, ‘ China: Zhejiang, Zhuji City, Sanbaoli Vil. (Ā ṚOEÙ), Dong-quan-xi-lin Villa ( ẄḆW 林ƜÈ), 29°34’6.32”N, 120°11’16.0”E, 100 m, 12.x.2013, Tie-Xiong Zhao leg. ’; 1♂, ‘ China: Zhejiang, Jinhua City (ṁṃhv), Pan’an County ( Oi ẨD), Dapanshan N. R. (AdzƜĦ ṂṚṔLJ), path to the park, 28°57’37.98”N, 120°30’50.60”E, mixed leaf litter, sifted, 531–845 m, 06.v.2016, Jiang, Liu & Zhou leg. ’; 1 ♂, ‘ China: Jiangxi, Pingxiang City (ŘŞhv), Luxi County (ỌÃ D), Yangjia Ling ( ẂŴḲ), 27°35’03”N, 114°15’02”E, path in mixed leaf litter, sifted, ca. 820 m, bamboo forest, wood with fungi, 15.vii.2013, Song, Yin, Yu leg. ’; 1 ♀, ‘ China: W. Jiangxi Province, Luxi County, Wugong Shan (ǨḿƜ), 27°27’53”N, 114°10’47”E, mixed forest, leaf litter, wood, sifted & beating, ca. 1570 m, 27.x.2013, Peng, Shen, Yan .’; 1 ♂, 6 ♀♀, ‘ China: Jiangxi, Yichun City (ṘRhv), Fengxin County (ḤďD), Baizhangshan ( UÌƜ), 28°42’40”N, 114°45’35”E, Cunninghamia lanceolata leaf litter, sifted, 850–1100 m, 17.vii.2013, Hu & Lü leg. ’.

Diagnostic description. Male. Body ( Fig. 1A ) dark reddish-brown, mouthparts and tarsi paler. Body length 1.55–1.61 mm. Head wider than long, length from anterior margin of clypeus to base 0.32–0.36 mm, width across eyes 0.38–0.41 mm. Each eye composed of about 20 facets. Length of eyes (0.15 mm) / length of tempora (0.07 mm) approximately 2.1:1. Length of antennae 0.81–0.83 mm; club ( Fig. 1B ) formed by antennomeres 9–11; inner margin of antennomere 9 ( Fig. 1C ) expanded, with semi-membranous apophysis at apex of expansion, and at approximately basal 1/3 of antennomere; antennomere 10 strongly transverse, obconical; antennomere 11 ( Fig. 1B ) about 1.7 times as long as wide, with one apically concave basal protuberance covered with tuft of setae at apex ( Fig. 1D ). Pronotum about as long as broad, length along midline 0.39–0.41 mm, maximum width 0.40–0.42 mm. Elytra slightly transverse, length along suture 0.52–0.56 mm, maximum width 0.60–0.63 mm.Abdomen widest at tergite 1 ( IV), and narrowing apically; mid-length of dorsally exposed part 0.38–0.42 mm, maximum width 0.53–0.56 mm. Length of aedeagus ( Fig. 1E ) 0.17 mm; median lobe slightly asymmetric, with angularly protuberant apex.

Female. Body length 1.55–1.57 mm. Head wider than long, length from anterior margin of clypeus to base 0.32–0.33 mm, width across eyes 0.37–0.39 mm. Each eye composed of about 14 facets. Length of eyes (0.13 mm) / length of tempora (0.07 mm) approximately 1.9:1. Length of antennae 0.68–0.71 mm. Pronotum about as long as broad, length along midline 0.38–0.39 mm, maximum width 0.38–0.40 mm. Elytra slightly transverse, length along suture 0.47–0.50 mm, maximum width 0.55–0.56 mm. Abdomen widest at tergite 1 ( IV), and narrowing apically; mid-length of dorsally exposed part 0.40–0.51 mm, maximum width 0.52–0.56 mm.

Comparative notes. Sathytes communis shares with Sathytes longwangshanus Yin & Li a similar body size (1.55–1.61 mm vs. 1.54 mm), and a transverse antennomere 9 with the apophysis located at basal 1/3 ( Fig. 1C ; Yin et al. 2012: fig. 7E). These two species can be readily separated by the single basal protuberance on the antennomere 11 in the new species, while there is one basal and one subbasal protuberance in S. longwangshanus . Distribution. China: Anhui, Zhejiang, Jiangxi. Etymology. The specific name indicates that it is a widely distributed species.

Figures

FIGURE 1. Sathytes communis sp. nov., male (population of Gutianshan). A. Dorsal habitus. B. Antennal club. C. Antennomere 9. D. Modification of antennomere 11, enlarged. E. Aedeagus, ventral. Scale bars: 0.5 mm in A; 0.2 mm in B; 0.1 mm in C, E; 0.02 mm in D.