Sathytes xingdoumontis, 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 : 62-63

Sathytes xingdoumontis sp. nov.

urn:lsid:zoobank.org:act:F8A011D4-D284-410E-A1BA-EF0A72463BC7

Fig. 15

Differential diagnosis

Among the species possessing a single basal protuberance of antennomere 11 and a conspicuously oblique mesal margin of antennomere 9 (see Differential diagnosis under S. shennong sp. nov.), the male of S. xingdoumontis sp. nov. can be readily distinguished by the unique position and shape of the apophysis of antennomere 9.

Etymology

The new species is named after Xingdoushan Nature Reserve, where the type locality of this species is situated.

Type material (2 specimens)

Holotype

CHINA • ♂; Hubei, Enshi (Ḅẁ), Xingdoushan N. R. (¶ẇƜon'ẉợṵ), San-Xian-Chang (Ẹnĸ); 30°2′20.48″ N, 109°8′33.89″ E; alt. 1114 m; 19 May 2017; Zhou G.C., Tian T. and Huang Z.G. leg.; sifted; SNUC.

Paratype

CHINA • 1 ♀; same collection data as for holotype; 30°2′29.98″ N, 109°8′1.60″ E; alt. 1253 m; 18 May 2017; SNUC .

Description

Male

MEASUREMENTS. AeL = 0.32 mm; AnL = 1.20 mm; AL = 0.51 mm; AW = 0.69 mm; TBL = 2.15 mm; EL = 0.69 mm; EW = 0.84 mm; HL = 0.46 mm; HW = 0.46 mm; LE = 0.16 mm; LT = 0.13 mm; PL = 0.49 mm; PW = 0.48 mm.

Body ( Fig. 15A ) reddish-brown, mouthparts and tarsi paler. Head about as long as wide. Each eye composed of about 22 facets; LE:LT = 1.2. Antennal clubs ( Fig. 15B ) formed by antennomeres 9–11; antennomere 9 ( Fig. 15C ) angularly expanded mesally, each with semi-membranous apophysis anterior to apex of expansion; antennomere 10 transverse, obconical; antennomere 11 ( Fig. 15B ) about 1.5 times as long as wide, each with single short basal protuberance covered with tuft of setae at apex ( Fig. 15D ). Pronotum approximately as long as wide. Elytra moderately transverse. Abdomen widest at tergite 1 (IV) and narrowing apically. Aedeagus ( Fig. 15E ) lobe slightly constricted near middle, almost symmetrical.

Female

MEASUREMENTS. AnL = 0.97 mm; AL = 0.69 mm; AW = 0.75 mm; TBL = 2.21 mm; EL = 0.52 mm; EW = 0.51 mm; HL = 0.48 mm; HW = 0.48 mm; LE = 0.15 mm; LT = 0.16 mm; PL = 0.52 mm; PW = 0.51 mm.

Slightly larger than male in size. Each eye composed of about 14 facets; LE: LT = 0.9. Antennal clubs lacking modifications.

Distribution

China: Hubei.

Figures

Fig. 15. Sathytes xingdoumontis sp. nov., ♂. 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.