Sasajiscymnus seboshii ( Ohta, 1929 )

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 : 49-50

Sasajiscymnus seboshii ( Ohta, 1929)

( Figs 34 , 71 )

Chinese name: AEṄḧ瓢•

Scymnus hareja seboshii Ohta, 1929: 11 (type locality: Togakushi, Nagano, Japan).— Korschefsky 1931: 127; Miwa & Yoshida 1935: 38; Mader 1955: 940.

Scymnus (Scymnus) seboshii: Miyatake 1958: 253 .— Kamiya 1961: 296; Nakane 1963: 208.

Pseudoscymnus seboshii: Chapin 1962: 51 .— Sasaji 1971: 101; Kovář 2007: 582.

Sasajiscymnus seboshii: Yu 2011: 117 — Iqbal et al. 2020: 387.

Diagnosis. This species is similar to S. aureus sp. nov. in structures of the male genitalia, but can be distinguished from the later by the black elytra with a large yellowish brown heart-shaped marking in the middle part, and the parameres about 2/5 as long as penis guide ( Figs 34a–b, 34j ). In S. aureus , elytra are predominantly yellow with some black spots, and the parameres are about 1/3 as long as penis guide ( Figs 21a–b, 21g ).

Description. TL: 1.53–2.28 mm, TW: 1.14–1.87 mm, TH: 0.76–1.12 mm.

Body oval, moderately convex, surfaces covered with short pubescence ( Figs 34a–f ). Head yellow to yellowish brown, with interocular distance distinctly greater than eye width in frontal view. Pronotum yellow. Scutellar shield brown. Elytra black with yellow apices and humeral angles, and a large yellowish brown spot presenting in the middle part; sometimes median macula extends to lateral margins of elytra. Ventral surfaces yellow to black. Legs yellow. Abdominal postcoxal lines incomplete, not recurved toward the base of ventrite ( Fig. 34g ).

Male genitalia: Penis stout, penis capsule with stout outer arm and long inner one, apex of penis constricted with membranous appendage ( Figs 34h–i ). 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 pointed apex ( Figs 34j–k ).

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

Material examined. China: Anhui: 1♂ 1♀, Hengdu Town , Shitai County, 230 m, 20.IX.2010, Wang XM leg ; 1♂, Yaoluoping National Nature Reserve , 600–800 m, 30.IX.2010, Wang XM leg ; 2♂, Chuanling, Yaoluoping National Nature Reserve , 800 m, 2.X.2010, Wang XM leg. Fujian: 1♂ 1♀, Jiangxikou, Tongmu Village, Wuyishan National Nature Reserve , 1130 m, 19.IX.2012, Huo LZ leg. Hubei: 1♀, Guanmen Mountains, Shennongjia National Nature Reserve , 1260 m, 18.VII.2007, Wang XM leg ; 1♂, Banqiao, Shennongjia National Nature Reserve , 1170 m, 21–24.VII.2007, Wang XM leg. Guangxi: 2♂, Jiuniutang, Mao’ershan National Nature Reserve , 18.X.2004, Wang XM leg ; 1♀, Shili Canyon, Mao’ershan National Nature Reserve , 19.X.2004, Wang XM leg. Shaanxi: 1♂ 1♀, Daguping Village, Foping National Nature Reserve , 1170 m, 21.VII.2009, Wang XM leg ; 1♂, Xihe, Daguping Village, Foping National Nature Reserve , 1100 m, 22.VII.2009, Wang XM leg ; 1♂, Fengyu Forest Farm, 1500 m, 28.VII.2009, Wang XM leg. Gansu: 5♂ 3♀, Maijishan National Forest Park, Maiji District , Tianshui City, 1500 m , 10.VIII.2008, Wang XM leg.

Distribution. China (Anhui, Fujian, Hubei, Shaanxi, Gansu, Taiwan); Japan.

Remarks. This species varies in elytral patterns. Some specimens from Shaanxi, Gansu and Hubei have predominantly pale yellow elytra, with black markings reducing to small spots or narrow lines near humeral calli.

Figures

FIGURE 21. S. aureus Tong & Wang sp. nov.: a dorsal view, b lateral view, c frontal view, d abdomen, male, e–h male genita-

FIGURE 34. S. seboshii (Ohta, 1929): a, d dorsal view, b, e lateral view, c, f frontal view, g abdomen, male, h–k male genitalia: h penis, i apex of penis, j tegmen, lateral view, k tegmen, ventral view. Scale bars: a–f: 0.5 mm; g–k: 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)