Sathytes valentulus, 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 : 60-61

Sathytes valentulus sp. nov.

urn:lsid:zoobank.org:act:394D438A-130F-4160-B63C-A2E07142B155

Fig. 14

Differential diagnosis

The male of S. valentulus sp. nov. can be readily separated from all congeners by the markedly stout antennomere 11 alone, aided by the unique form of antennomere 9, and its distribution in Guangxi.

Etymology

The specific name refers to the stout male antennomere 11 of the new species.

Type material (3 specimens)

Holotype

CHINA • ♂; Guangxi, Jinxiu County (Ŀñn), “ 7 km ”; 24°09′07″ N, 110°12′29″ E; alt. 1300 m; 16 Jul. 2014; Peng, Song, Yu and Yan leg.; beech forest; mixed leaf litter, humus, sifted; SNUC.

Paratypes

CHINA • 1 ♂, same collection data as for holotype; SNUC • 1 ♂; same collection data as for holotype; Laosahan Forest Farm (ZƜWĸ); 24°07′02″ N, 110°11′51″ E; alt. 950 m; 26 Jul. 2014; Zhong Peng leg.; beech forest, rotten wood, colony of ant; SNUC .

Description

Male

MEASUREMENTS. AeL = 0.23 mm; AnL = 1.14–1.17 mm; AL = 0.54–0.56 mm; AW = 0.76–0.79 mm; TBL = 2.29–2.42 mm; EL = 0.71–0.76 mm; EW = 0.85–0.89 mm; HL = 0.50–0.53 mm; HW = 0.52– 0.55 mm; LE = 0.14 mm; LT = 0.17 mm; PL = 0.54–0.57 mm; PW = 0.53–0.56 mm.

Body ( Fig. 14A ) reddish-brown, mouthparts and tarsi paler. Head approximately as long as broad. Each eye composed of about 20 facets; LE: LT = 0.8.Antennal clubs ( Fig. 14B ) formed by antennomeres 9–11; antennomere 9 ( Fig. 14C ) strongly transverse when widths are fully visible, each with semi-membranous apophysis at apical ²/5 of mesal margin; antennomere 10 strongly transverse, obconical; antennomere 11 ( Fig. 14B ) about 1.2 times as long as wide, each with single broad basal protuberance covered with tuft of setae at apex ( Fig. 14D ). Pronotum about as long as wide. Elytra moderately transverse. Abdomen widest at tergite 1 (IV) and narrowing apically. Aedeagus ( Fig. 14E ) moderately asymmetrical.

Female

Unknown.

Distribution

China: Guangxi.

Figures

Fig. 14. Sathytes valentulus sp. nov., ♂ (population of Laoshan Forest Farm). 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.