Sasajiscymnus obliquus Tong & Wang

TONG, JUNBO, CHEN, XIAOSHENG, ZHANG, XIAONING, HUO, LIZHI, WU, GANG, PENG, ZHENGQIANG & WANG, XINGMIN, 2022, A review of the genus Sasajiscymnus Vandenberg, 2004 from China (Coleoptera, Coccinellidae), Zootaxa 5207 (1), pp. 1-104 : 45-46

Sasajiscymnus obliquus Tong & Wang sp. nov.

( Figs 30 , 70 )

Chinese name: ḦṄḧ瓢•

Diagnosis. This species can be distinguished from other species of Sasajiscymnus by the pointed apex of penis with membranous appendage, and elytra with characteristic pattern ( Figs 30a–b, 30f ).

Description. TL: 1.58–2.17 mm, TW: 1.17–1.61 mm, TH: 0.82–1.14 mm.

Body oval, moderately convex, surfaces covered with short pubescence ( Figs 30a–c ). Head yellow with interocular distance distinctly greater than eye width in frontal view. Pronotum yellow. Scutellar shield yellowish brown. Elytron with characteristic yellow and black pattern as show in Figure 30a . Ventral surfaces yellow to black. Legs yellow. Abdominal postcoxal lines incomplete, not recurved toward the base of ventrite ( Fig. 30d ).

Male genitalia: Penis stout, penis capsule with stout outer arm and long inner one, apex of penis constricted with membranous appendage ( Figs 30e–f ). Penis guide with prominent keel at base in lateral view, then tapering towards pointed apex; parameres about 2/5 as long as penis guide, with a tuft of long setae at apex; penis guide widest at base in ventral view, then gradually narrowing to blunt apex ( Figs 30g –h ).

Female genitalia: Coxites elongate, triangular; styli well developed with terminal setae; spermatheca distinctly curved, with basal ramus and elongate nodulus.

Type material. Holotype: China: Xizang: ♂, Chayu County, 2320 m, 12.X.2007, Wang XM leg ( SCAU) . Paratypes (SCAU): China: Xizang: 7♂11♀, Same data as holotype; 7♂6♀, Cibagou National Nature Reserve, 2000 m, 13.X.2007, Wang XM leg; 1♂1♀, Xiachayu Town, Chaiyu County, 1800 m, 14.X.2007, Wang XM leg; 3♂ 1♀, North Downtown of Chaiyu County, 2300 m, 18.X.2007, Wang XM leg ; 1♂ 6♀, Cibagou National Nature Reserve , 1615 m, 26.IX.2011, Huo LZ leg ; 1♂, Shangchayu Town–Xiachayu Town , Chayu County, 1650 m, 27.IX.2011, Huo LZ leg ; 1♀, Chayu County, 2400 m, 29.IX.2011, Huo LZ leg.

Distribution. China (Xizang).

Etymology. The specific epithet obliquus derives from the Latin word “obliquus” and refers to the oblique marks on the elytra.

Figures

FIGURE 30. S. obliquus Tong & Wang sp. nov.: a dorsal view, b lateral view, c frontal view, d abdomen, male, e–h male genitalia: e penis, f apex of penis, g tegmen, lateral view, h tegmen, ventral view. Scale bars: a–c: 0.5 mm; d–h: 0.1 mm.

FIGURE 70. Distribution of the Sasajiscymnus hareja species group: ● S. lancetapicalis (Pang & Gordon, 1986); ■ S. flexus Tong & Wang sp. nov.; ◆ S. obliquus Tong & Wang sp. nov.; ▲ S. lamellatus (Yang & Wu, 1972); ★ S. truncatulus (Yu, 1997)