Sathytes chengzhifeii, Yin & Shen, 2020

Sathytes chengzhifeii View in CoL sp. nov.

urn:lsid:zoobank.org:act:

Fig. 4 View Fig

Differential diagnosis

The male of S. chengzhifeii sp. nov. is most similar to that of S. huapingensis sp. nov. from Guangxi, China and S. larifuga Shen & Yin, 2019 from Sabah, Borneo, with which it shares the unique, subtriangular basal protuberance of antennomere 11. The new species can be separated from the former by the larger body size ( 2.69–2.81 mm vs 2.49 mm) and the more basal and more distal positions of the protuberance and apophysis of antennomeres 11 and 9, respectively; and from the latter by the relatively much smaller eyes in relation to the head, more elongate antennomeres 9 and 11, and more distal position of the apophysis of antennomere 9.

Etymology

The new species is named after Zhi-Fei Cheng, one of the collectors of the new species.

Type material ( 5 specimens)

Holotype

CHINA • ♂; Yunnan, Dehongmang ( ṞẌĖm), Yingjiang County ( Ŋữn), Tongbiguan Town ( Ŕae ẅđ); 24°36′38.78″ N, 97°39′49.35″ E; alt. 1382 m; 18 Jul. 2019; Chen and Shen. leg.; mixed leaf litter, sifted; SNUC.

GoogleMaps

Paratypes

CHINA • 1 ♂, 2 ♀♀; same collection data as for holotype; SNUC GoogleMaps • 1 ♂; same collection data as for holotype; near Mangna Road ( Ėďŵǿ); 24°36′59.75″ N, 97°44′30.89″ E; alt. 1550 m, 29 Jul. 2019; SNUC GoogleMaps .

Description

Male

MEASUREMENTS. AeL = 0.25 mm; AnL = 1.25–1.29 mm; AL = 0.73–0.78 mm; AW = 0.86–0.89 mm; TBL = 2.69–2.81 mm; EL = 0.81–0.84 mm; EW = 0.98–1.02 mm; HL = 0.57–0.59 mm; HW = 0.55– 0.57 mm; LE = 0.21 mm; LT = 0.11 mm; PL = 0.58–0.60 mm; PW = 0.57–0.58 mm.

Body ( Fig. 4A View Fig ) reddish-brown, mouthparts and tarsi paler. Head approximately as long as wide. Each eye composed of about 20 facets; LE: LT = 1.9. Antennal clubs ( Fig. 4B View Fig ) formed by antennomeres 9–11; antennomere 9 ( Fig. 4C View Fig ) slightly elongate, each with long semi-membranous apophysis at basal ¼ of mesal margin; antennomere 10 strongly transverse, obconical; antennomere 11 ( Fig. 4B View Fig ) about 1.8 times as long as wide, each with single subtriangular and blunt basal protuberance covered with short tuft of setae at apex ( Fig. 4D View Fig ). Pronotum about as long as wide. Elytra strongly transverse. Abdomen widest at tergite 1 (IV) and narrowing apically. Aedeagus ( Fig. 4E View Fig ) flattened, slightly elongate, and slightly asymmetrical at apex.

Female

MEASUREMENTS. AnL = 1.27 mm; AL = 0.86 mm; AW = 0.95 mm; TBL = 3.0 mm; EL = 0.83 mm; EW = 1.05 mm; HL = 0.62 mm; HW = 0.60 mm; LE = 0.17 mm; LT = 0.16 mm; PL = 0.69 mm; PW = 0.65 mm.

Similar to male in size. Each eye composed of about 14 facets; LE:LT = 1.6. Antennal clubs lacking modifications.

Distribution

China: Yunnan.