Copelatus zimmermanni Gschwendtner, 1934 (Figs 27, 69–70) Copelatus zimmermanni Gschwendtner in Zimmermann, 1934: 143. Type locality. “ China (Hangchow)” [China, Zhejiang Province, Hangzhou, ca. 30°16′N 120°09′E]. Type material. Holotype ♀, originally deposited in Yenching University, Beijing, China; destroyed during fire in 1980’. Material examined. CHINA: Guangdong: 3 ♂, 4 ♀, Danxiashan Mts., 23.v.2008, F. Jia leg. (SYSU); 9 spec., 30 km NE Shaoguan, Duanshi vill., Danxiashan NP, 25°02.7′N 113°43.8′E, 125 m, pool, 4.-5.v.2011, J. Hájek leg. (NMPC); 1 ♂, Danxiashan Mts., Yangyuanshan, 10.vi.2011, F. Jia leg. (SYSU). Diagnosis. Medium sized (TL: 5.4–5.7 mm), oblong-oval species; dorsal surface distinctly convex. Head reddish, with dark band along eyes and infuscation on frons between eyes; pronotum reddish brown, laterally broadly testaceous; elytra brown, with very broad, irregularly shaped, transverse basal orange band. Pronotum with few short longitudinal strioles laterally. Each elytron with 11 superficially impressed discal striae: sutural stria usually strongly reduced to few short strioles, or almost absent in some specimens; all striae abbreviated posteriorly, striae 2, 3, 5, 7 and 9 ending in posterior fourth of elytral length, striae 4, 6, 8 and 11 reaching apical fourth of elytral length; striae 7 and 9 often fragmented to strioles throughout their length (Fig. 27). Median lobe broad, club-shaped, with two protuberances on dorsal side, sinuate on ventral margin; apex beak-shaped (Fig. 69). Paramere slender ‘C’-shaped; apex slender; apical lobe long, club-shaped (Fig 70). Female similar to male; strioles on pronotum more numerous, elytral striae more impressed. Collection details. The specimens from Danxiashan were collected in shallow open pool with sparse littoral vegetation, and in a pool on a stream (Fig. 78). Distribution. A species described from Zhejiang (China), and subsequently recorded also from Japan and Korea (Satô 1985, Park et al. 2008). First record from Guangdong province (Fig. 83).

Published as part of 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), pp. 251-295 in Zootaxa 5124 (3) on pages 275-276, DOI: 10.11646/zootaxa.5124.3.1, http://zenodo.org/record/6410696