Stirellus grandis Matsumura 1914

Stirellus grandis (Matsumura, 1914)

(Figs. 9–10)

Aconura grandis Matsumura, 1914: 229; Esaki & Ito, 1954: 173; Li & Wang, 1991: 171. Doratulina grandis, Vilbaste, 1965: 10; Lee & Kwon, 1977: 64; Kwon & Lee, 1979: 101, plate III; Lee, 1979: 328, Figs. 221– 223.

Stirellus grandis, Li et al, 2011: 272, Fig. 5 –273.

Length. Male: 5.0– 5.5mm; female: 6.4–8.1mm.

Color. General color stramineous throughout (Fig. 9).

Body. Head narrower than pronotum, subconical, anterior margin acutely angled. Vertex longer than 2x width between eyes (Fig. 9 A, 9D). Ocellus next to eye slightly below anterior margin (Fig. 9 B, 9E). Eye relatively large (Fig. 9 A, 9D). Anteclypeus nearly parallel-sided, extending beyond normal curve of genae (Fig. 9 C, 9F). Pronotum median length shorter than median length of crown. Mesonotum and scutellum shorter than pronotum or nearly as long as pronotum (Fig. 9 A, 9D). Forewing macropterous, usually exposing apex of abdomen in female and sometimes in male (Fig. 9 A–B, 9D–E).

Male. Pygofer side without macrosetae, apex as Fig. 10 A (Fig. 10 A–B). Subgenital plate concave laterally, macrosetae uniseriate laterally (Fig. 10 D). Style narrow, apophysis short, digitate, slightly laterally curved (Fig. 10 E–F). Connective stem nearly as long as arms (Fig. 10 G). Aedeagal shaft bent at near base, long, straight, parallel to aedeagal base (Fig. 10 H–I).

Female. Hind margin of seventh sternum nearly straight (Fig. 9 G).

Material examined. China, Shanghai.: 2♀, Jinshan County, Dajinshan, 24 November 1985, coll. Liu Zuyao & Zheng Jianzhong (SHEM); Zhejiang Prov.: 1Ƌ, 3♀, Mt. Wuyanling, 900–1000m, 30 July 2006, coll. Duan Yani; Fujian Prov.: 1Ƌ, Shouning County, 26 July 2003, coll. Duan Yani; Hunan Prov.: 1Ƌ, Shaoshan City, 24 April 2002, coll. Yuan Zhonglin; Guangxi Prov.: 1♀, Shiwandashan, 29 November 2001, coll. Wang Zongqing; Hainan Prov.: 3Ƌ, 9♀, Mt. Diaoluo, 2 June 2007, coll. Duan Yani; Shaanxi Prov.: 1Ƌ, Mt. Qinling, 27 October 1950.

Distribution. Korea; Japan and widespread in China.

Remarks. This species was described from an unknown number of specimens from Taiwan and Hong Kong (syntypes). These types have not been examined and the identity of the species is based on the figures of Kwon & Lee (1979) and Lee (1979). This species is similar to S. productus (Matsumura), but it can be distinguished by the following combination of characters: larger size; apophysis of style short, slightly laterally curved; aedeagal shaft thick, close to aedeagal base.