Macroscytus badius ( Walker, 1867 )

Zhu, Geng-Ping, Liu, Guo-Qing & Lis, Jerzy A., 2010, A study on the genus Macroscytus Fieber, 1860 from China (Hemiptera: Heteroptera: Cydnidae), Zootaxa 2400, pp. 1-15 : 4

Macroscytus badius ( Walker, 1867)

( Fig. 2 )

Aethus badius Walker, 1867: 159 .

Macroscytus badius: Distant 1899: 222 ; Lis 2000: 392. Macroscytus expansus Signoret, 1883: 479 (syn. by Lis 1994: 236). Macroscytus subaeneus: Hsiao et al. 1977: 46 [part].

Diagnostic characters: Body length: 5.70–7.83 mm, body width: 3.15–4.44 mm. General colour from pale brown to black-brown, corium somewhat paler. Head dorsally impunctate, except for several almost indistinct tiny punctures on paraclypei; clypeus without subapical setigerous punctures (sporadically with a pair of setae – Fig. 2 a); each paraclypeus with a row of 4–8 submarginal hair-like setae; 2nd antennal segment about 1.2 times longer than the 3rd; ocular index 2.10–2.80; interocellar index 9.0–15.0. Pronotal transverse discal impression behind calli absent or shallow; lateral margins with 9–13 submarginal setigerous punctures ( Fig. 2 a). Propleural depression and its posterior convexity densely punctate, propleural anterior convexity sparsely punctate apically. Mesocorial disc and exocorium almost evenly punctate; costa separated from exocorium along its entire length; costal margin with 4–7 setigerous punctures ( Fig. 2 a). Male hind femora with large subapical tooth on dorsal margin ( Fig. 2 b); male hind tibiae carinate, without denticles ( Fig. 2 b). Abdominal sterna impunctate or with small punctures posterior to spiracles. Male pygophore as in Fig. 2 d (dorsal view); paramere as in Fig. 2 c; aedeagus as in Fig. 2 f, apical part of 2nd conjunctival appendages more or less curled laterally ( Fig. 2 g); proctiger as in Fig. 2 e.

Material examined (clypeus without subapical hair-like setae): CHINA: Hainan Province: Mt. Diaoluo, Lingshui county (18°66'N, 109°93'E), alt. 75m, 1 males, 1 female, 28.v.2007, light-trapped, Peng-zhi Dong leg., 1 male, 28.v.2007, light-trapped, Xu Zhang leg., 2 males, 3 females, 19.iv.2008, light-trapped, Geng-ping Zhu leg.; Datian Cervus eldi National Nature Reserve (19°11'N, 108°80'E), alt. 100m, 52 males, 45 females, 28.iv.2009, light-trapped, Geng-ping Zhu, Yi-ran Mu leg., 7 males, 6 females, 29.iv.2009, light-trapped, Yiran Mu leg., 2 females, 26.iv.2009, light-trapped, Li Xi leg., 2 females, 27.iv.2009, light-trapped, Yi-ran Mu leg.; Maoyang Town (18°94'N, 109°52'E), 1 male, 18.iv.2009, light-trapped, Geng-ping Zhu leg., 1 male, 18.iv.2009, light-trapped, Yi-ran Mu leg.; Tongguling National Nature Reserve (19°68'N, 111°02'E), 9 males, 16 females, 18.vii.2008, light-trapped, Zhong-hua Fan, Xu Zhang leg.; (clypeus with a pair of subapical hairlike setae): CHINA: Hainan Province: Mt. Diaoluo, Lingshui county (18°66'N, 109°93'E), alt. 70m, 1 male, 22.iv.2008, light-trapped, Geng-ping Zhu and Bo Cai leg., 1 female, 19.iv.2008, light-trapped, Geng-ping Zhu leg.; Datian Cervus eldi National Nature Reserve (19°11'N, 108°80'E), alt. 100m, 1 male, 1 female, 28.iv.2009, light-trapped, Geng-ping Zhu leg., 2 males, 3 females, 28.iv.2009, light-trapped, Li Xi leg., 3 males, 4 females, 28.iv.2009, light-trapped, Geng-ping Zhu,Yi-ran Mu leg., 3 males, 1 female, 29.iv.2009, light-trapped,Yi-ran Mu leg.; Maoyang Town (18°94'N, 109°52'E), 1 female, 18.iv.2009, light-trapped, Yi-ran Mu leg.

Distribution: China (Hainan), Burma, India, Maldive Islands, Nepal, Sri Lanka.

Notes: Wu (1935) listed this species from North China in his catalogue of the Chinese insects, but then its presence there was regarded as doubtful ( Lis 1994, 2000). Our present study confirms its occurrence in the Hainan Province (South China); however, its presence in northern regions of the country still needs confirmation. Several specimens studied by us had a cephalic chaetotaxy different of its typical specimens, i.e., possessed a pair of subapical setigerous punctures on the clypeus – Fig. 2 a (all hitherto known specimens of this species bear no hair-like setae on the clypeus).

Figures

FIGURE 2. Macroscytus badius from China. (a) body outline (with cephalic chaetotaxy variation); (b) male hind leg, dorsal view; (c) left paramere; (d) male genital capsule, dorsal view; (e) proctiger; (f) aedeagus; (g) apical part of the 2 nd conjunctival appendages, dorsal view. Scale bar = 0.25 mm.