Sasajiscymnus sylvaticus ( Lewis, 1896 )

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 : 15

Sasajiscymnus sylvaticus ( Lewis, 1896)

( Figs 1g , 3c, 3g , 8 , 65 )

Chinese name: 枝Ṅḧ瓢•

Scymnus sylvaticus Lewis, 1896: 36 (type locality: Japan).— Ohta 1929: 11; Mader 1955: 940; Bielawski 1957: 71.

Scymnus (Scymnus) sylvaticus: Korschefsky 1931: 127 .— Kamiya 1961: 294; Nakane 1963: 208.

Pseudoscymnus sylvaticus: Chapin 1962: 51 .— Sasaji 1970: 208; 1971: 104; Park & Yoon 1994: 66; Yu 1995 a: 129; Pang et al. 2004: 89; Kovář 2007: 582; Ren et al. 2009: 66.

Pseudoscymnus silvaticus: Bielawski 1980: 237 [Misspelling].

Sasajiscymnus sylvaticus: Yu 2011: 120 — Iqbal et al. 2020: 388.

Diagnosis. This species is similar to S. cultratus sp. nov., but can be distinguished from the later by yellowish brown pronotum, dark brown scutellar shield, and parameres about 3/4 as long as penis guide ( Figs 8a–c, 8g ). In S. cultratus , pronotum is yellow, scutellar shield is black, and parameres are about 1/3 as long as penis guide ( Figs 7a–c, 7g ).

Description. TL: 2.21–2.89 mm, TW: 1.59–2.03 mm, TH: 0.86–1.17 mm.

Body oval, moderately convex, surfaces covered with short pubescence ( Figs 8a–c ). Head yellowish brown with interocular distance distinctly greater than eye width in frontal view. Pronotum yellowish brown. Scutellar shield dark brown. 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. 8d ).

Male genitalia: Penis long and slender, penis capsule with short outer arm and long inner one, apex of penis pointed ( Figs 8e–f ). Penis guide long and slender in lateral view, approximately parallel sided for basal 4/5, then gradually narrowing to pointed apex; parameres about 3/4 as long as penis guide, densely covered with long setae at apex and inner sides; penis guide approximately parallel sided for basal 1/ 2 in ventral view, bifurcated apically ( Figs 8g –h ).

Female genitalia: Coxites distinctly elongate, triangular; styli reduced with terminal setae; spermatheca distinctly curved, with basal ramus and elongate nodulus ( Figs 3c, 3g ).

Materail examined (SCAU). China: Anhui: 2♂, Guniujiang National Nature Reserve , 24.IX.2010, Wang XM leg ; 1♀, Jinzhai Tianma National Nature Reserve , 600 m, 3–5.X.2010, Wang XM leg. Fujian: 1♀, Shipaichang, Longxishan National Nature Reserve , 500 m, 28–29.VIII.2012, Huo LZ leg ; 1♂, Guadun, Wuyishan National Nature Reserve , 1200 m, 14.IX.2012, Huo LZ leg ; 1♂ 1♀, Jiangxikou, Tongmu Village, Wuyishan National Nature Reserve , 1130 m, 19.IX.2012, Huo LZ leg. Jiangxi: 1♂ 1♀, Huangyangjie, Jinggangshan National Nature Reserve , 16.VIII.2004, Wang XM leg ; 1♂, Jingzhu Mountains, Jinggangshan National Nature Reserve , 22.IX.2004, Wang XM leg ; 1♂, Xiangzhou, Jinggangshan National Nature Reserve , 23.IX.2004, Wang XM leg. Hubei: 1♂, Lulin Town, Jingshan City , 169 m, 10.VII.2007, Wang XM leg ; 1♂ 1♀, Laojun Mountains, Shennongjia National Nature Reserve , 1230 m, 5.VIII.2007, Wang XM leg. Hunan: 4♂, Mangshan National Nature Reserve , 3.X.2004, Ren SX leg ; 6♀, Shennonggu National Forest Park, 1100 m, 7.X.2010, Wang XM leg ; 1♂, Shennonggu National Forest Park, 1000 m, 8.X.2010, Wang XM leg ; 7♂ 4♀, Shennonggu National Forest Park, 650–800 m, 9.X.2010, Wang XM leg. Guangdong: 1♂, Qinshuigu, Nanling National Nature Reserve , 30.IX.2004, Wang XM leg ; 3♂ 1♀, Xiaohuang Mountains, Nanling National Nature Reserve , 1.X.2004, Wang XM leg ; 2♂, Nanling National Nature Reserve , 2.X.2004, Wang XM leg ; 3♂ 2♀, Qinshuigu, Nanling National Nature Reserve , 21.IX.2005, Wang XM leg. Guangxi: 3♂, Hillside, Mao’ershan National Nature Reserve , 17.X.2004, Wang XM leg ; 17♂ 11♀, Shili Canyon, Mao’ershan National Nature Reserve , 19.X.2004, Wang XM leg ; 1♀, Gaozhai, Mao’ershan National Nature Reserve , 20.X.2004, Wang XM leg ; 1♀, Pinglong Mountains, Shiwandashan National Nature Reserve , 6–8.XI.2004, Wang XM leg ; 1♂ 1♀, Hongqi Forest Farm, Shiwandashan National Nature Reserve , 26.VII.2005, Wang XM leg ; 1♂, Pinglong Mountains, Shiwandashan National Nature Reserve , 28.VII.2005, Wang XM leg. Hainan: 1♂, Jianfengling National Nature Reserve , 11.XI.1989, Ren SX leg. Guizhou: 1♀, Wudong Village– Maoping, Leigongshan National Nature Reserve , 1350 m, 6.X.2008, Chen XS leg ; 1♀, Wudong Village– Fangxiang, Leigongshan National Nature Reserve , 7.X.2008, Chen XS leg ; 6♂ 11♀, Xiangshuiyan, Leigongshan National Nature Reserve , 980 m, 9.X.2008, Chen XS leg ; 2♂ 2♀, Jiaomi Village , Taijiang County, 710 m, 14.X.2008, Chen XS leg. Yunnan: 1♂ 1♀, Yingpan Town , Jingping County, 1487 m, 5.VIII.2013, Chen XS leg.

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

FIGURE 8. S. sylvaticus (Lewis, 1896): 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 65. Distribution of the Sasajiscymnus sylvaticus species group: ■ S. sylvaticus (Lewis, 1896); ◆ S. tainanensis (Ohta, 1929).