Sasajiscymnus longus 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 : 35

Sasajiscymnus longus Tong & Wang sp. nov.

( Figs 24 , 69 )

Chinese name: Ḵ叶ḧ瓢•

Diagnosis. This species is similar to S. quinquepunctatus ( Weise, 1923) in the characters of male genitalia, but can be distinguished from the later by the more elongate penis guide and parameres about 1/2 as long as penis guide ( Figs 24g –h ). In S. quinquepunctatus , penis guide is shorter and parameres are about 3/4 as long as penis guide ( Figs 2n–o ).

Description. TL: 2.10–2.59 mm, TW: 1.46–1.80 mm, TH: 1.03–1.28 mm.

Body oval, moderately convex, surfaces covered with short pubescence ( Figs 24a–c ). Head yellow with interocular distance distinctly greater than eye width in frontal view. Pronotum yellow. Scutellar shield black. Elytra black with yellow apices. Ventral surfaces yellow to black. Legs yellow. Abdominal postcoxal lines incomplete, not recurved toward the base of ventrite ( Fig. 24d ).

Male genitalia: Penis stout, penis capsule with stout outer arm and long inner one, apex of penis distinctly expanded with membranous appendage ( Figs 24e–f ). Penis guide with prominent keel at base in lateral view, then tapering towards pointed apex; parameres conspicuously inflated, about 1/2 as long as penis guide, with a tuft of long setae at apex; penis guide approximately parallel sided for basal 1/ 2 in ventral view, then gradually narrowing to blunt apex ( Figs 24g –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: ♂, Cibagou National Nature Reserve , 1615 m, 26.IX.2011, Huo LZ leg ( SCAU) . Paratypes ( SCAU): China: Xizang: 1♂, Same data as holotype ; 1♂ 1♀, Cibagou National Nature Reserve , 2000 m, 13.X.2007, Wang XM leg. Henan: 1♂, Baotianman National Nature Reserve , 6.VII.2009, Wang XM leg. Yunnan: 1♂ 3♀, Caiyanghe National Forest Park, 4. V.2009, Wang XM leg; 2♂ 3♀, Maku Village , Gongshan County, 1600 m, 1.VIII.2010, Wang XM leg ; 2♂, Qinglandan, Maku Village , Gongshan County , 4–7.VIII.2010, Wang XM leg.

Distribution. China (Henan, Yunnan, Xizang).

Etymology. The specific epithet longus derives from the Latin word“longus” and refers to the elongate penis guide.

Figures

FIGURE 2. Main characters of Sasajiscymnus, S. quinquepunctatus (Weise, 1923): a head, frontal view, b mandible, left, dorsal view, c mandible, right, dorsal view, d labrum, e antenna, f maxilla, g labium, h prothorax, ventral view, i prosternum, ventral view, j hind leg, k abdomen, male, m–o male genitalia: m apex of penis, l penis, n tegmen, lateral view, o tegmen, ventral view. Scale bars: 0.1 mm

FIGURE 24. S. longus 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 69. Distribution of the Sasajiscymnus hareja species group: ● S. sagittalis Tong & Wang sp. nov.; ■ S. longus Tong & Wang sp. nov.; ◆ S. hareja (Weise, 1879); ▲ S. fulvihumerus (Yang & Wu, 1972); ★ S. latus Tong & Wang sp. nov.