Sasajiscymnus nakanei ( Araki, 1963 )

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 : 20-21

Sasajiscymnus nakanei ( Araki, 1963)

( Figs 1b , 12, 64)

Chinese name: AE+ḧ瓢•

Scymnus (Scymnus) nakanei Araki, 1963: 253 (type locality: Ohdaigahara Mountains , Japan).

Pseudoscymnus nakanei: Kamiya 1966: 79 .— Sasaji 1971: 107; Wei et al. 1985: 68; Park & Yoon 1994: 65; Zhang & Yu 1997: 428; Pang et al. 2004: 88; Kovář 2007: 582.

Sasajiscymnus nakanei: Iqbal et al. 2020: 385 .

Diagnosis. This species is similar to S. subulatus sp. nov., but can be distinguished from the later by parameres not dilated in lateral view (Fig. 12f). In S. subulatus , parameres are distinctly dilated ( Fig. 10f ).

Description. TL: 1.83–2.57 mm, TW: 1.38–1.89 mm, TH: 0.71–1.03 mm.

Body oval, moderately convex, surfaces covered with short pubescence (Figs 12a–c). Head black with antennae and mouthparts brown, interocular distance distinctly greater than eye width in frontal view. Pronotum and scutellar shield black. Elytra black with brown apices. Ventral surfaces brown to black. Legs brown. Abdominal postcoxal lines incomplete, recurved toward the base of ventrite (Fig. 12d).

Male genitalia: Penis long and slender, penis capsule with short outer arm and long inner one, apex of penis pointed (Fig. 12e). Penis guide triangular in lateral view with pointed apex; parameres about 3/4 as long as penis guide, densely covered with long setae at apex; penis guide widest at base in ventral view, tapering towards pointed apex (Fig. 12f–g).

Female genitalia: Coxites distinctly elongate, triangular; styli strongly reduced and hardly visible; spermatheca distinctly curved, with basal ramus and nodulus.

Material examined. China: Hubei: 5♂ 5♀, Lulin Town , Jingshan County, 169 m, 10.VII.2007, Wang XM leg ; 2♂, Xingshan County, 16.VII.2007, Wang XM leg. Chongqing: 1♂ 1♀, Wuxi County, 2.VII.1989, Ren SX leg. Guizhou: 4♂ 4♀, Huaxi District, Guiyang City , 17–18.VIII.1987, Pang XF leg.

Distribution. China (Shandong, Hubei, Chongqing, Guizhou, Shaanxi); Japan; South Korea.

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