Sasajiscymnus atypicus 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 : 65-66

Sasajiscymnus atypicus Tong & Wang sp. nov.

( Figs 1i , 3a, 3e , 45 , 74)

Chinese name: Ǿ特ḧ瓢•

Diagnosis. This is a very distinctive species of Sasajiscymnus characterized by the yellowish brown head bearing a large black spot, long penis with swollen outer arm and fin-shaped apex, and parameres nearly as long as penis guide ( Figs 45c–h ).

Description. TL: 1.76–2.44 mm, TW: 1.34–1.86 mm, TH: 0.79–1.08 mm.

Body oval, moderately convex, surfaces covered with short pubescence ( Figs 45a–c ). Head yellowish brown with a large black spot, interocular distance distinctly greater than eye width in frontal view. Pronotum yellowish brown with a black spot at base. Scutellar shield black. Elytra black with yellowish brown apices. Ventral surfaces yellowish brown to black. Legs yellowish brown. Abdominal postcoxal lines incomplete, not recurved toward the base of ventrite ( Fig. 45d ).

Male genitalia: Penis long, penis capsule with swollen outer arm and short inner one, apex of penis fin-shaped ( Figs 45e–f ). Penis guide long in lateral view, gradually narrowing to pointed apex; parameres long and slender, nearly as long as penis guide, covered with long setae at apex and inner sides; penis guide stout in ventral view, widest at basal 3/4, distinctly narrowed at base, with widest part about 1.42× of basal width ( Figs 45g –h ).

Female genitalia: Coxites board; styli strongly reduced and hardly visible; spermatheca worm-like, without clear ramus or nodulus ( Figs 3a, 3e ).

Type material. Holotype: China: Sichuan: ♂, Fengtongzhai National Nature Reserve , 1560 m, 2–3.X.2007, Wang XM leg ( SCAU) . Paratypes ( SCAU): China: Sichuan: 3♂ 2♀, Same data as holotype ; 2♂ 1♀, Liziping Reserve , 465 m, 16.IX.2010, Wang XM leg ; 3♂ 2♀, Zhengjiang Tianmushan National Nature Reserve , 450–1000 m, 18.IX.2010, Wang XM leg. Anhui: 2♀, Yaoluoping National Nature Reserve , 600–800 m, 30.IX.2010, Wang XM leg ; 3♂ 3♀, Jinzhai Tianma National Nature Reserve , 600 m, 3–5.X.2010, Wang XM leg. Hubei: 2♂, Hongping, Shennongjia National Nature Reserve , 19.VII.1997, Peng ZQ leg ; 1♂ 1♀, Banqiao, Shennongjia National Nature Reserve , 1170 m, 21–24.VII.2007, Wang XM leg ; 1♂ 1♀, Pingzhan, Shennongjia National Nature Reserve , 1600 m, 27.VII.2007, Wang XM leg. Hunan: 4♂ 2♀, Shennonggu National Forest Park, 1100 m, 7.X.2010, Wang XM leg ; 5♂ 4♀, Shennonggu National Forest Park, 1000 m, 8.X.2010, Wang XM leg. Guizhou: 1♂, Leigongshan National Nature Reserve , 30.VII.1997, Peng ZQ leg ; 1♂ 1♀, Datangwan, Leigongshan National Nature Reserve , 1100 m, 5.X.2008, Wang XM leg ; 2♂, Wudong Village– Maoping, Leigongshan National Nature Reserve , 1350 m, 6.X.2008, Wang XM leg ; 1♀, Wudong Village– Fangxiang, Leigongshan National Nature Reserve , 7.X.2008, Wang XM leg ; 4♂ 2♀, Lianhuaping, Leigongshan National Nature Reserve , 8.X.2008, Wang XM leg ; 1♂, Taojiang Town , Rongjiang County, 1000 m, 10–11.X.2008, Wang XM leg. Shaanxi: 10♂ 10♀, Daguping Village, Foping National Nature Reserve , 1170 m, 21.VII.2009, Wang XM leg.

Distribution. China (Zhejiang, Anhui, Hubei, Hunan, Sichuan, Guizhou, Shaanxi).

Etymology. The specific epithet atypicus derives from the Latin word “atypicus” and refers to the atypical head colouration and structures of the male genitalia.

Figures

FIGURE 1. Body size and colouration of Chinese Sasajiscymnus spp.: a S. amplus (Yang & Wu, 1972), b S. nakanei (Araki, 1963), c S. intricatus Tong & Wang sp. nov., d S. tumidus Tong & Wang sp. nov., e S. ocellatus (Yu, 2000), f S. dapae (Hoàng, 1978), g S. sylvaticus (Lewis, 1896), h S. ancistroides (Pang & Huang, 1986), i S. atypicus Tong & Wang sp. nov., j S. kuriharai Kitano, 2012, k S. parenthesis (Weise, 1923). Scale bars: 1 mm

FIGURE 3. Female genitalia of Chinese Sasajiscymnus spp.: a, e S. atypicus Tong & Wang sp. nov., b, f S. bivalvis (Yu, 1997), c, g S. sylvaticus (Lewis, 1896), d, h S. acutus Tong & Wang sp. nov., i, m S. amplus (Yang & Wu, 1972) j, n S. intricatus Tong & Wang sp. nov., k, o S. kurohime (Miyatake, 1959), l, p S. tumidus Tong & Wang sp. nov., a–d, i–l spermatheca, e–h, m–p ovipositor. Scale bars: 0.1 mm

FIGURE 45. S. atypicus 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.