Sathytes linzhiensis, Yin & Shen, 2020

Yin, Zi-Wei & Shen, Qi, 2020, Fifteen new species of Sathytes Westwood from China (Coleoptera, Staphylinidae, Pselaphinae), with an updated checklist of world species, European Journal of Taxonomy 722, pp. 37-74 : 47-49

Sathytes linzhiensis sp. nov.

urn:lsid:zoobank.org:act:5B7777C6-80EB-4E6A-B54E-A4255CE82C81

Fig. 6

Differential diagnosis

The male of this new species shares with S. perpusillus Yin & Li, 2012 , S. vafelus Löbl, 1979 and S. minutus Löbl, 1979 the antennomere 11 bearing two small protuberances at the base of the mesal margin. This new species has the largest body size (1.70–1.91 mm), and can be readily separated from S. perpusillus (TBL = 1.48–1.52 mm) by the more distal position of the apophysis on antennomere 9; from S. vafelus (TBL 1.4–1.5 mm) by the relatively shorter antennomere 11 (length / width = 1.6) and less protruding basal protuberance on it; and from S. minutus (TBL = 1.3 mm) by the much larger body size and more relatively elongate antennomere 11.

Etymology

The new species is named after Linzhi City, where the type locality of this species is situated.

Type material (4 specimens) Holotype

CHINA • ♂; Xizang, Motuo County, path from Bari village (ƂHLj) to Renqingbeng Temple (ŪÊởử); 29°18′44.82″ N, 95°21′27.18″ E; alt. 1833 m; 19 Mar. 2017; X.-B. Song leg.; SNUC.

Paratypes

CHINA • 1 ♂; same collection data as for holotype; SNUC • 1 ♂; Xizang, Motuo County, Beibeng Village (ỡởø); 30°14′52″ N, 94°47′55″ E; alt. 1700–1900 m; 5 Aug. 2014; Wen-Xuan Bi leg.; SNUC • 1 ♂; same collection data as for previous; 29°14′11″ N, 95°09′54″ E; alt. 1825 m; 5 Aug. 2014; Cheng, Peng and Shen leg.; mixed leaf litter, sifted; SNUC .

Description

Male

MEASUREMENTS. AeL = 0.16 mm; AnL = 0.79–0.82 mm; AL = 0.47–0.55 mm; AW = 0.52–0.57 mm; TBL = 1.70–1.91 mm; EL = 0.47–0.55 mm; EW = 0.61–0.65 mm; HL = 0.37–0.42 mm; HW = 0.36– 0.41 mm; LE = 0.15 mm; LT = 0.09 mm; PL = 0.39–0.41 mm; PW = 0.38–0.40 mm.

Body ( Fig. 6A ) reddish-brown, mouthparts and tarsi paler. Head about as long as wide. Each eye composed of about 22 facets; LE:LT = 1.7. Antennal clubs ( Fig. 6B ) formed by antennomeres 9–11; antennomere 9 ( Fig. 6C ) each with mesal margin shorter than lateral margin, long semi-membranous apophysis at middle of mesal surface; antennomere 10 strongly transverse, obconical; antennomere 11 ( Fig. 6B ) about 1.6 times as long as wide, each with two small basal protuberances covered with long apical setae ( Fig. 6D ). Pronotum about as long as wide. Elytra strongly transverse. Abdomen widest at tergite 1 (IV) and narrowing apically. Aedeagus ( Fig. 6E ) almost symmetrical, with slightly angulate apex.

Female

Unknown.

Distribution

China: Xizang.

Figures

Fig. 6. Sathytes linzhiensis sp. nov., ♂ (population of Beibeng). A. Dorsal habitus. B. Antennal club. C. Antennomere 9. D. Modification of antennomere 11, enlarged. E. Aedeagus, ventral view. Scale bars: A = 0.5 mm; B = 0.2 mm; C, E = 0.1 mm; D = 0.05 mm.