Cercyon (Paracycreon) laminatus Sharp, 1873

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 : 49-50

Cercyon (Paracycreon) laminatus Sharp, 1873

( Figs. 33–35 )

Cercyon laminatus Sharp, 1873: 66 .

Cercyon sharpi Harold, 1878: 68 . Synonymized by Satô (1961).

Cercyon vicinalis var. vicinaloides dʼOrchymont, 1925: 278. syn. nov. (elevated to species rank by Balfour-Browne (1939)). Cercyon tropisternus Wu et Pu, 1995 in Jia et al. 1995: 129. syn. nov.

Type material examined. Cercyon vicinaloides : Lectotype (hereby designated): 1 3 ( IRSNB), “male symbol // Nimrod Sd. (II) / Walker Coll. / 92 - 87 // A. d´Orchymont det. / Cercyon (Paracycreon) / vicinaloides m. // Para- / type // coll. A. d´Orchym. // LECTOTYPE / Cercyon vicinalis / var. vicinaloides / dʼOrchymont 1925 / Fikáček & Ryndevich designated 2011”.

Cercyon tropisternus : Holotype: 1 3 ( SYSU), “Guangzhou, Shipai, Pig farm [transcribed from Chinese] // Holotype, Cercyon tropisternus sp. nov. Pu et Wu, det. Wu Wu”. Paratypes: 1 Ƥ ( SYSU), “Guangzhou, Shipai, Cattle farm [transcribed from Chinese] // Allotype, Cercyon tropisternus sp. nov. Pu et Wu, det. Wu Wu”; 2 exs. ( SYSU), “Guangzhou, Shipai, Pig farm, 20.vii.1985 [transcribed from Chinese] // Paratype, Cercyon tropisternum , det. Wu Wu ”; 2 exs. ( SYSU), “Xinyi, 9.v.1986. leg. Wu Wu [transcribed from Chinese] // Paratype, Cercyon tropisternum , det. Wu Wu”.

Additional material examined. CHINA: Jilin: 233, 4ƤƤ, Changbaishan, 18-23.vi.2000 ( CASS). Guangdong: 8 exs., Xinyi, 9.v.1986, leg. Wu Wu ( SYSU); 10 exs., Guangzhou, Shipai, pig farm, 20.vii.1985, leg. Wu Wu ( SYSU); 1 ex., Guangzhou, Shipai, Cattle farm, 14.x.1985, leg. Wu Wu ( SYSU); 2 exs., Guangzhou, Shipai, pig farm, 25.vii.1985, leg. Wu Wu ( SYSU); 1 ex., Xinyi, 6.v.1986, leg. Wu Wu ( SYSU). 2 exs., intercepted in imported wastepaper from the Philippines in Xinsha Port, Guangzhou, iii.2006. 1 ex. ( SYSU); intercepted in imported wastepaper from Europe in Nansha Port, Guangzhou, 2.vi.2008 ( SYSU). Hubei: 1 ex., Hankou, 9.vii.1955 ( SYSU). Guangxi: 1 Ƥ, Nanning, 19.vi.1977, leg. Zhihe Huang ( SYSU); 2 exs., Yangshuo, 1985, leg. Shoujian Chen ( SYSU). Hunan: 2 exs., Yizhang, 9.iv.1941, leg. Zhelong Pu ( SYSU). Shaanxi: 1 ex., Xi’an, Wujiafen, 17.viii.1984, leg. Zhihe Huang ( SYSU). Sichuan: 1 ex., Sichuan, Yanyuan, Jinhe, 1250m, 30.vi.1984, lgt. Li Changfang ( NZMC). Hongkong: 1 ex., Kowloog, O. Piel leg. ( SYSU).

Taxonomic notes. Cercyon vicinalis var. vicinaloides was described according to two specimens: one from Nimrod Sound [= China, Zhejiang, 29°30'11''N, 121°29'50''E] deposited in IRSNB, and one from Shanghai deposited in BMNH, without designation of the holotype. We have studied the former specimen, which agrees with Cercyon laminatus in all external characters as well as in the morphology of the male genitalia. Hence, we designate the specimen from Nimrod Sound as lectotype and based on its examination consider C. vicinaloides as a junior subjective synonym of Cercyon laminatus .

The type specimens of C. tropisternus correspond well with the specimens of C. laminatus from Japan and Europe in all diagnostic characters including male genitalia (see Ryndevich 2008). Therefore, we propose here C. tropisternus as a junior subjective synonym of C. laminatus .

There is a specimen from Sichuan labeled as the holotype of C. tropisternus in the collection of NZMC. Unlike the holotype specimen deposited in SYSU, the label data of the specimen if NZMC do not correspond with the original description and the specimen is therefore not a part of the type series of C. tropisternus . We list it under Additional material examined here.

Distribution. China (Jilin, Hubei, Guangdong, Guangxi, Hunan, Shaanxi, Shanghai, Sichuan, Hongkong, Taiwan, Zheijang: this paper, Ryndevich 2008), Japan, Russian Far East. It was introduced and well-established in Europe and the Hawaiian Islands ( Hansen 1999). Recently it was also reported from Chile and Australia ( Fikáček 2009).

Figures

FIGURES 31 – 35. Holotypes of Cercyon species. 31 – 32. C. rhombicus Jia, 1995 [= C. inquinatus] (31: ventral view, 32: labels). 33 – 35: C. tropisternus Wu & Pu, 1995 [= C. laminatus] (33: ventral view, 34: dorsal view, 35: labels).