Copelatus weymarni J. Balfour-Browne, 1947

Jiang, Zhuo-Yin, Zhao, Shuang, Yang, Zhen-Yu, Jia, Feng-Long & Hájek, Jiří, 2022, A review of Copelatus Erichson, 1832 of Mainland China, with description of ten new species from the japonicus complex (Coleoptera: Dytiscidae: Copelatinae), Zootaxa 5124 (3), pp. 251-295 : 274

Copelatus weymarni J. Balfour-Browne, 1947

( Figs 25 , 62–66 )

Copelatus weymarni J. Balfour-Browne, 1947: 440 ; Zeng 1989: 6 (Shanghai); Li 1992: 35 (Liaoning); Nilsson 1995: 42 (Hebei: Beidaihe).

Type locality. “Manchuria: Djalantun” [ China, Nei Mongol, Zalantun , ca. 48°00′N 122°44′E] .

Type material. Holotype ♂, deposited in BMNH (not studied).

Material examined. CHINA: Liaoning: 1 ♂, 92 km SE Benxi , 200 m, 29.ix.1994, Ji & Wang leg. ( NHMW) ; Shanghai: 6 spec., Shanghai ( IZCAS) .

Diagnosis. Medium sized (TL: 5.1–5.5 mm), oblong-oval species. Head reddish-brown, clypeus somewhat paler – testaceous; pronotum reddish-brown with broadly testaceous anterior margin and lateral sides; elytra dark brown, basal margin and especially lateral sides paler – testaceous. Pronotum with short longitudinal strioles laterally. Each elytron with six complete discal striae and one submarginal stria: all striae beginning at base and ending close to apex, only stria 6 shorter and ending at apical fourth; submarginal stria long, beginning at about elytral mid-length ( Fig. 25 ). Median lobe of aedeagus in lateral view sickle-shaped with apex slightly turned dorsally, with large irregular process on dorsal side near mid-length ( Fig. 65 ). Parameres moderately broad, ‘C’-shaped; apex rather slender; apical lobe long, club-shaped ( Fig. 66 ). Female similar to male, strioles on pronotum more numerous.

Distribution. A species described from Inner Mongolia (not Heilongjiang, as stated by Nilsson 1995), and subsequently recorded also from Hebei, Shanghai and Liaoning in northeastern China ( Zeng 1989, Li 1992, Nilsson 1995) ( Fig. 83 ). In addition to China, C. weymarni occurs in the Far East of Russia, Japan and Korea ( Satô 1985, Nilsson 1995, Park et al. 2008).

Figures

FIGURE 83. Map of distribution of Copelatus in China Mainland.

FIGURES 25–28. Habitus of Copelatus in China. 25. C. weymarni (♂; Kaymanovka, Russia); 26. C. xiniudong sp. nov. (holotype ♂; Xiniudong, Guizhou); 27. C. zimmermanni (♀; Danxia Shan, Guangdong); 28. C. sp. (♀; Lantau, Hongkong). Scale bar 1 mm.

FIGURES 51–62. Male genitalia of Copelatus. 51, 53, 55, 57, 59, 61. median lobe in lateral view; 52, 54, 56, 58, 60, 62. paramere. 51–52. C. parallelus (Yushuwan, Hunan); 53. C. puzhelongi sp. nov. (a. holotype, Pu’er, Yunnan; b. Huanglianshan, Yunnan; c. Houaphanh, Laos); 54. C. puzhelongi sp. nov. (holotype, Pu’er, Yunnan); 55–56. C. rimosus (Dali, Yunnan); 57. C. rosulae sp. nov. (a. holotype, Pianma, Yunnan; b. Kongshu, Yunnan); 58. C. rosulae sp. nov. (Kongshu, Yunnan); 59–60. C. sociennus (Hengqin Island, Guangdong); 61–62. C. tenebrosus (Hengqin Island, Guangdong). Scale bar 0.5 mm.

FIGURES 63–70. Male genitalia of Copelatus. 63, 65, 67, 69. median lobe in lateral view; 64, 66, 68, 70. paramere. 63–64. C. tengchongensis sp. nov. (holotype, Beihai, Yunnan); 65–66. C. weymarni (Honshu, Japan); 67–68. C. xiniudong sp. nov. (holotype, Xiniudong, Guizhou); 69–70. C. zimmermanni (Danxiashan, Guangdong). Scale bar 0.5 mm.