Macroscytus japonensis Scott 1874
Creators: name: Zhu, Geng-Ping
name: Liu, Guo-Qing
name: Lis, Jerzy A.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cydnidae
Macroscytus
Macroscytus japonensis

description: Macroscytus japonensis Scott, 1874
(Fig. 6)
Aethus badius: Walker 1867: 159 [syntype from North China].
Macroscytus japonensis Scott, 1874: 289 [name only], 294; Lis 1994: 221, 2000: 429. Macroscytus niponensis Signoret, 1883: 475 (syn. by Horváth 1919: 241).
Macroscytus subaeneus: Wu 1935: 269; Hsiao et al. 1977: 46 [part]; Zhang and Lin 1992: 108. Macroscyrtus [sic!] subaenus [sic!]: Lin and Zhang 1992: 218.
Diagnostic characters: Body length: 8.10–10.5 mm, body width: 4.65–6.00 mm. General body colour from castaneous to almost black. Head almost impunctate, its lateral parts sometimes wrinkled and with a few punctures; clypeus without a subapical pair of hair-like setae; each paraclypeus submarginally with a single preocular hair-like seta (Fig. 6 a); 3rd antennal segment 1.09–1.19 times longer than 2nd; ocular index 1.98– 3.00; interocellar index 5.5–9.1. Pronotal transverse impression behind calli absent, or only slightly marked on either side and interrupted medially; lateral margins with 5–6 submarginal setigerous punctures (Fig. 6 a). Propleural depression with a row of coarse punctures, propleural anterior convexity moderately punctate, posterior convexity with large punctures. Exocorium densely punctate; mesocorium with puncturation weaker than that of exocorium; costa separated from exocorium along almost its entire length; costal margin with 2 setigerous punctures. Male hind tibiae slightly carinate, and subbasally with distinct small tubercles, hind femora with several small teeth on its ventral margin and one subapical tooth on dorsal margin (Fig. 6 b); female hind femora without teeth, and hind tibiae without tubercles. Abdominal sterna with patches of punctures posteriorly to spiracles. Opening of male genital capsule as in Fig. 6 d, its margins completely sclerotized; paramere as in Fig. 6 c; aedeagus as in Fig. 6 e; apical part of the 2nd conjunctival appendages laterally curled.
Material examined: CHINA: Guizhou Province: Daozhen county (28°53'N, 107°36'E), alt. 600m, 24.v.2004, 2 females, Wei-bing Zhu leg.; Maolan county (27°39'N, 108°96'E), alt. 900m, 1 male, 1.viii.1999, Wen-jun Bu leg.; Hainan Province: Mt. Diaoluo, Lingshui county (18°66'N, 109°93'E), alt. 70m, 1 male, 28.v.2007, light-trapped, Xu Zhang leg., 1 female, 2.vi.2007, light-trapped, Ji-meng Hua leg., 1 female, 28.v.2007, light-trapped, Xiao-ming Li leg.; Duowenling (19°80'N, 109°77'E), 1 male, 1 female, 2.v.2009, light-trapped, Gengping Zhu leg.; Hubei Province: Wuchang county (30°21'N, 114°18'E), 1 male, viii.1982; Yichang county (30°46'N, 111°19'E), 1 male, vii.1985, 1 female, 9.v.1985, 2 females, 28.v.1986, Chuan-ren Li leg.; Shizi mountain (25°32'N, 102°22'E), 2 males, 20.v.1980, 3 males, 1 female, 15.x.1990.; Sichuan Province: Chengdu (30°40'N, 104°04'E), 1 male, vi.1956; Wulong county (29°19'N, 107°43'E), 2 females, vii.1958; Yunnan Province: Jinping county (22°47'N, 103°12'E), alt. 500m, 8 males, 8 females, 20.iv.1956, 1 female, 19.iv.1956, Ke-ren Huang leg.; Hekou county (22°31'N, 103°59'E), 1 male, 9.vi.1956, 1 male, 7.vi.1956, 1 female, 10.vi.1956, Ke-ren Huang leg.; Zhejiang Province: Mt. Tianmu (30°26'N, 119°34'E), 1 male, 2.vii.1972, Zi-Qing Wang leg., 1 male, 8.vii.2007, light-trapped, Geng-ping Zhu leg.
Distribution: China (Beijing, Fujian, Gansu, Guangdong, Guizhou, Hainan, Henan, Hubei, Hunan, Shandong, Shanghai, Shanxi, Sichuan, Taiwan, Yunnan, Zhejiang), Burma (north), Korea, Japan, Russia (Far East), Vietnam (north).
Note: The species is very similar to M. fraterculus, but can be separated from the latter by the characters given in the key to species.
description: Published as part of Zhu, Geng-Ping, Liu, Guo-Qing & Lis, Jerzy A., 2010, A study on the genus Macroscytus Fieber, 1860 from China (Hemiptera: Heteroptera: Cydnidae), pp. 1-15 in Zootaxa 2400 on pages 9-10, DOI: 10.5281/zenodo.194079