Cercyon

Jia, Feng-Long, Fikáček, Martin & Ryndevich, Sergey K., 2011, Taxonomic notes on Chinese Cercyon: description of a new species, new synonyms, and additional faunistic records (Coleoptera: Hydrophilidae: Sphaeridiinae), Zootaxa 3090, pp. 41-56 : 48

Cercyon (s. str.) quisquilius ( Linnaeus, 1761)

( Figs. 18–20 )

Scarabaeus quisquilius Linnaeus, 1761: 138 . Transferred to Cercyon by Stephens (1829). For complete synonymy see Hansen (1999).

Cercyon guangxiensis Wu et Pu, 1995 in Jia et al. 1995: 128. syn. nov.

Type material examined. C. guangxiensis : Holotype ( SYSU): 1 3, “Nanning, 19.vi.1977, leg. Zhihe Huang [transcribed from Chinese] // Holotype, Cercyon guangxiensis sp. nov., det. Pu et Wu”. Paratype: 1 Ƥ ( SYSU), “Nanning, 19.vi.1977, leg. Zhihe Huang [transcribed from Chinese] // Allotype, Cercyon guangxiensis sp. nov., det. Pu et Wu”; 1 3 ( SYSU), “Shanghai [transcribed from Chinese] // Cercyon (s. str.) // Paratype, Cercyon guangxiensis , det. Pu et Wu”; 1 ex. ( SYSU), “Shanghai [transcribed from Chinese] // Paratype, Cercyon guangxiensis , det. Pu et Wu”.

Additional material examined. CHINA: Inner Mongolia: 328 exs., Hailar, 23-26.vii.2003, leg. Fenglong Jia ( SYSU); 21 exs., Hulunbeir, Zhalainor, 21.vii.2003, leg. Fenglong Jia ( SYSU); 132 exs., Chifeng, Linxi, Zhanpu, 23.viii.2003, leg. Fenglong Jia ( SYSU). Qinghai: 5 exs., Yunning Si lamasery, 2890 m, 36°45.6'N 102°10.6'E, 1.- 2.vii.2005, leg. J. Hájek, D. Král & J. Růžička ( NMPC). Shanghai: 1 3, Shanghai, without collector data ( SYSU); 1 Ƥ, Shanghai ( SYSU); 13 exs., Yangshuo, 1985, leg. Shoujian Chen ( SYSU).

Taxonomic notes. The type specimens of C. guangxiensis correspond well with the European as well as Japanese specimens of C. quisquilius in all diagnostic characters as well as in the morphology of the male genitalia (see Vogt 1971, Smetana 1978 and Hansen 1987). For that reason, we consider C. guangxiensis as a junior subjective synonym of C. quisquilius .

Distribution. In China, the species is recorded from Inner Mongolia, Shanghai, Qinghai and Guangxi; outside China it is widely distributed throughout Palaearctic and Nearctic regions, also introduced to Australia, Argentina, Mexico, and Hawaiian Islands ( Hansen 1999, Fikáček 2009).

Figures

FIGURES 18 – 23. Holotypes of the Cercyon species. 18 – 20: C. guangxiensis Wu & Pu, 1995 [= C. quisquilius] (18: dorsal view, 19: ventral view, 20: labels). 21 – 23: C. heilongjiangensis Wu & Pu, 1995 [= C. marinus] (21: lateral view, 22: ventral view, 23: labels).