Platambus punctatipennis Brancucci, 1984

(Figs. 9, 13)

Material studied. China: 1 ♀, Fujian Province, Longyan, 2 km S Dachi, Ceyan Shan, 750 m, 29.i.1997, Ji & Wang leg., G. Wewalka det. 1998, (NHMW) ; 1 ♂, 1 ♀, Guangdong Province, Ruyuan Hsien, Nanling N.R., Laopenger- dui, 24°54′57″N, 113°02′10″E, 850 m, mixed forest, leaf litter, sifted, 3.v.2015, Peng, Tu & Zhou leg. (SNUC) ; 4 ♂, 1 ♀, Guizhou Province, Leishan County, SE, Kaili, NE Leishan, Leigong Shan, E – slope, ca. 300 m S of pass, 26°22.56′N, 108°13.40′E, 1700 m, 14.vi.2001, Schillhammer & Wang leg., G. Wewalka det. 2001 (NHMW) ; 5 ♂, 5 ♀, Guizhou Province, Leishan County, SE, Kaili, NE Leishan, Leigong Shan, E – slope, ca. 2 km W of pass, 26°22.7′N, 108°12.01′E, 1700 m, 17.vi.2001, Schillhammer & Wang leg., G. Wewalka det. 2001 (NHMW, NMPC) ; 3 ♂, 2 ♀, Jiangxi Province, Jinggang Shan Mts., Pingshuishan, stream, 26°30.4′N, 114°06.9′E, 1590 m, 28.iv.2011, M. Fikáček & J. Hájek leg. (NMPC) ; 3 ♂, 5 ♀, Zhejiang Province, West Tianmu Shan (Mts) reserve, in river btw. ‘ One & Three Li pavilion’, 30°19.8–20.0′N, 119°26.2–3′E, 530–670 m, 26.vi.–1.vii.2017, J. Hájek & J. Růžička leg. (NMPC, SNUC) .

Collecting circumstances. This species seems to inhabit a rather wide variety of running water habitats. While specimens from Jinggang Shan were collected in a small stream with a sandy bottom (Fig. 17), specimens from Tianmu Shan were collected in a larger mountain river with a stony bottom (Fig. 18).

Remarks. The coarser punctures on the elytra are somewhat smaller and sparser in the material from Guizhou than in specimens from south-eastern China. However, those specimens agree well with typical P. punctatipennis in other characters, and therefore we list them under that species.

Distribution. Relatively widespread species in south-eastern China, so far known from Guangdong, Fujian and Jiangxi. First records from Guizhou and Zhejiang (Fig. 20).