Sasajiscymnus robustus 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 : 60-62

Sasajiscymnus robustus Tong & Wang sp. nov.

( Figs 42 , 71 )

Chinese name: ffi瓣ḧ瓢•

Diagnosis. This species is similar to S. bivalvis (Yu, 1997) in body colouration, but can be distinguished from the later by more robust penis guide, and parameres about 2/3 as long as penis guide ( Figs 42g –h ) In S. bivalvis , penis guide is more slender, parameres are about 1/2 as long as penis guide ( Figs 39g –h ).

Description. TL: 1.64–2.56 mm, TW: 1.38–1.97 mm, TH: 0.98–1.47 mm.

Body oval, moderately convex, surfaces covered with short pubescence ( Figs 42a–c ). Head yellowish brown with interocular distance distinctly greater than eye width in frontal view. Pronotum yellowish brown. Scutellar shield black. Elytra black with yellowish brown apices. Ventral surfaces yellowish brown to black. Legs yellowish brown. Abdominal postcoxal lines incomplete, recurved toward the base of ventrite ( Fig. 42d ).

Male genitalia: Penis stout, penis capsule with stout outer arm and long inner one, apex of penis distinctly expanded with membranous appendage ( Figs 42e–f ). Penis guide with prominent keel at base in lateral view, then tapering towards pointed apex; parameres about 2/3 as long as penis guide, with a tuft of long setae at apex; penis guide approximately parallel sided for basal 1/ 3 in ventral view, apically rounded ( Figs 42g –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: Guangdong: ♂, Nanling National Nature Reserve , [24°54'59"N 113°2'4"E], 880 m, 17.XI.2017, Huo LZ leg ( SCAU) . Paratypes ( SCAU): China: Guangdong: 1♂, Qinshuigu, Nanling National Nature Reserve , 30.IX.2004, Wang XM leg ; 3♂ 1♀, Yangqiu Mountains, Shimentai National Nature Reserve , 6.X.2004, Wang XM leg ; 1♂, Wulangzhang, Shimentai National Nature Reserve , 8.X.2004, Wang XM leg ; 1♂, Nankunshan National Forest Park, 21.X.2004, Wang XM leg ; 8♂ 11♀, Huangdong, Shimentai National Nature Reserve , 30.X.2004, Wang XM leg ; 9♂ 10♀, Huangdong, Shimentai National Nature Reserve , 31.X.2004, Wang XM leg ; 4♂, Chebaling National Nature Reserve , 22–23.VIII.2019, Wang XM leg. Fujian: 1♂, Guaxi Village, Fu’an City , 260 m, 21.IX.2012, Huo LZ leg. Jiangxi: 1♂, Garden Spot , Xunwu County, 4.X.1981 , collector unknown. Hunan: 1♂, Mangshan National Nature Reserve , 3.X.2004, Ren SX leg. Guangxi: 1♂, Hillside, Mao’ershan National Nature Reserve , 17.X.2004, Wang XM leg ; 3♂, Shili Canyon, Mao’ershan National Nature Reserve , 19.X.2004, Wang XM leg. Chongqing: 1♂, Wuxi County, 2.VII.1989, Ren SX leg.

Distribution. China (Fujian, Jiangxi, Hunan, Guangdong, Guangxi, Chongqing).

Etymology. The specific epithet robustus derives from the Latin word “robustus” and refers to the rubust penis guide and parameres.

Figures

FIGURE 39. S. bivalvis (Yu, 1997): 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 42. S. robustus 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 71. Distribution of the Sasajiscymnus hareja species group: ● S. seboshii (Ohta, 1929); ◆ S. niganulus Tong & Wang sp. nov.; ▲ S. robustus Tong & Wang sp. nov.; ★ S. ancistroides (Pang & Huang, 1986)