Sathytes transversus sp. nov.

urn:lsid:zoobank.org:act: 92D74AE8-1C41-46C5-BFD6-0AE8F334E6FB

Fig. 13

Differential diagnosis

The male of S. transversus sp. nov. is most similar to that of S. usitatus from Yunnan in the similar form of the antennomeres 9 and 11, but can be clearly separated form it by the larger body size (2.61–2.72 mm vs 2.23–2.42 mm), more posteriorly located apophysis of antennomere 9 and longer basal protuberance of antennomere 11.

Etymology

The specific name refers to the strongly transverse antennomere 9 of the male.

Type material (7 specimens)

Holotype

CHINA • ♂; Xizang, Nyingchi, Pailong Country; 30°0′34.71″ N, 94°57′57.64″ E; alt. 2190 m; 15 Jul.– 1 Aug. 2019, Z.-W. Yin leg.; FIT (flight intercept trap); SNUC.

Paratypes

CHINA • 3 ♂♂, 1 ♀; same collection data as for holotype; SNUC • 1 ♀; Xizang, Linzhi City, near Pailong village; 30°01′10″ N, 94°59′48″ E; alt. 2040 m; 6 Jul. 2018; Cheng, Peng and Shen leg.; mixed leaf litter, sifted; SNUC • 1 ♂; Xizang, Motuo County, near 80 K; 29°41′09″ N, 95°30′10″ E; alt. 2330 m; 9 Jul. 2018; Cheng, Peng and Shen leg.; mixed leaf litter, sifted; SNUC .

Description

Male

MEASUREMENTS. AeL = 0.24 mm; AnL = 1.19–1.22 mm; AL = 0.73–0.75 mm; AW = 0.82–0.83 mm; TBL = 2.61–2.72 mm; EL = 0.74–0.77 mm; EW = 0.96–0.99 mm; HL = 0.55–0.58 mm; HW = 0.51– 0.53 mm; LE = 0.17 mm; LT = 0.16 mm; PL = 0.59–0.62 mm; PW = 0.53–0.57 mm.

Body (Fig. 13A) reddish-brown, mouthparts and tarsi paler. Head slightly longer than wide. Each eye composed of about 20 facets; LE:LT = 1.1. Antennal clubs (Fig. 13B) formed by antennomeres 9–11; antennomere 9 (Fig. 13C) strongly transverse, each with semi-membranous apophysis at apex of mesal expansion, and at approximately apical ²/5 of antennomere; antennomere 10 strongly transverse, obconical; antennomere 11 (Fig. 13B) about 1.4 times as long as wide, each with single moderately long basal protuberance covered with tuft of setae at apex (Fig. 13D). Pronotum about slightly longer than wide. Elytra moderately transverse. Abdomen widest at tergite 1 (IV) and narrowing apically. Aedeagus (Fig. 13E) slightly asymmetrical at apex.

Female

MEASUREMENTS. AnL = 1.16 mm; AL = 0.71–0.72 mm; AW = 0.86–0.87 mm; TBL = 2.52–2.55 mm; EL = 0.69–0.70 mm; EW = 0.91–0.92 mm; HL = 0.56 mm; HW = 0.49 mm; LE = 0.13 mm; LT = 0.16 mm; PL = 0.56–0.57 mm; PW = 0.55–0.56 mm.

Slightly smaller than male in size. Each eye composed of about 16 facets; LE: LT = 0.8. Antennal clubs lacking modifications.

Distribution

China: Xizang.