Copelatus malaisei Guignot, 1954

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 : 260-261

Copelatus malaisei Guignot, 1954

( Figs 9–10 , 41–42)

Copelatus malaisei Guignot, 1954: 566 .

Type locality. “Kambaiti” [ Myanmar, Kachin State, Kambaiti Pass , ca. 25°24′N 98°09′E] .

Type material. Holotype ♂ ( NHRS), labelled: “N. E. BURMA / Kambaiti. 7000 ft. [p] / 5/4 1934 [hw] / R. MALAISE [p] // 5684 / E91 + [blue label, p] // Type [red label with black frame, p] // F. Guignot det., 19 [p] 53 [hw] / Copelatus / malaisei Guign / Type ♂ [hw] // NHRS-JLKB / 000027122” . Allotype ♀ ( NHRS), labelled: “N. E. BURMA / Kambaiti. 7000 ft. [p] / 8/4 1934 [hw] / R. MALAISE [p] // 5685 / E91 + [blue label, p] // Allotype [red label with black frame, p] // F. Guignot det., 19 [p] 53 [hw] / Copelatus / malaisei Guign / Allotype ♀ [hw] // NHRS-JLKB / 000027123” .

Additional material examined. CHINA: Yunnan: 1 ♂, Gaoligong Mts. , 24.57N 98.45E, 2200-2500 m, 8.- 16.v.1995, V. Kubáň leg. ( ZSMG) ; 5 ♂, 1 ♀, Gaoligong Shan Mts. , 30 km E Tengchong, 2800 m, meadow, helocrene spring, muddy pools, 24.x.1999, J. Šťastný leg. ( JSCL, NMPC) ; 1 ♂, 4 ♀, 14 km SE Tengchong, Renjiafen env., 24°56.0-5′N 98°35.0-7′E, 2025-2145 m, shallow pool with clayey bottom, 23.vi.2016, J. Hájek & J. Růžička leg. ( NMPC) ; 10 ♂, 7 ♀, Baoshan, Gaoligong Nature Park , 24.91N 98.81E, 1751 m, 22.v.2016, Y. Tang & R. Zhang leg. ( SYSU) ; 2 ♂, 5 ♀, Tengchong, Houqiao Town, Xintang , 25.1303N 98.2572E, 1974 m, 12.v.2021, Z. Jiang, Z. Yang & Z. Mai leg. ( SYSU) .

Diagnosis. Larger (TL: 5.1–5.7 mm), oblong-oval species. Head brownish black, usually with reddish clypeus and two oval spots on vertex; pronotum brownish black, laterally broadly testaceous and with testaceous translucent anterior margin; elytra brown with somewhat paler base. Pronotum with only very few short longitudinal strioles laterally. Each elytron with six complete discal striae and one submarginal stria: striae 5–6 beginning slightly posteriorly from base; stria 1 longest, ending close to apex, odd striae somewhat longer than even ones; stria 6 shortest, ending at apical fourth; submarginal stria long, beginning before elytral mid-length and ending at apical fourth ( Fig. 9 ). Median lobe of aedeagus in lateral view simple, sickle shaped, regularly curved to bluntly pointed apex (Fig. 41). Parameres moderately broad, ‘C’-shaped; apex short and broad; apical lobes long, club-shaped (Fig. 42). Females dimorphic; striolate form with whole pronotum and elytra except for apex densely covered with short irregular longitudinal strioles ( Fig. 10 ).

Collection details. At the locality Renjiafen, C. malaisei was collected in ruderal habitat, in a small (diameter ca. 1 m), temporary pool with clayey bottom and dense vegetation; the species was syntopical there, although less abundant, with C. diversistriatus sp. nov. In Tengchong, C. malaisei was found in a marsh with dense emergent water macrophytes ( Fig. 79).

Distribution. A species occurring in the northeastern Myanmar (Kachin State) and western Yunnan, China (Gaoligong Shan Mts.). First record from China ( Fig. 81).

Figures

FIGURES 9–12. Habitus of Copelatus in China. 9. C. malaisei (♂; Tengchong, Yunnan); 10. C. malaisei (♀; Tengchong, Yunnan); 11. C. miaowangi sp. nov. (paratype ♂; Liupanshui, Guizhou); 12. C. mopanshanensis sp. nov. (paratype ♂; Mopan Shan, Yunnan). Scale bar 1 mm.