Platambus punctatipennis Brancucci, 1984

Hájek, Jiří & Zhang, Tao, 2019, A new Platambus from Sichuan, with new records of species of the P. sawadai group from China (Coleoptera: Dytiscidae: Agabinae), Zootaxa 4612 (4), pp. 533-543 : 536

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 ).

Figures

FIGURE 20. Map of distribution of Platambus sawadai group in China.

FIGURES 8–11. Habitus of Platambus sawadai group in China. 8. P. micropunctatus (Heishiding, Guangdong); 9. P. punctatipennis (Tianmu Shan, Zhejiang); 10. P. regulae (Jizu Shan, Yunnan); 11. P. wangi (Daba Shan, Hubei). Scale bar 2 mm.

FIGURES 12–15. Median lobe of aedeagus of Chinese species of Platambus sawadai group, lateral view. 12. P. micropunctatus (Heishiding, Guangdong); 13. P. punctatipennis (Tianmu Shan, Zhejiang); 14. P. regulae (Jizu Shan, Yunnan); 15. P. wangi (Daba Shan, Hubei). Scale bar 0.5 mm.

FIGURES 16–19. Habitat of Platambus sawadai group in China. 16. Heishiding, Guangdong; 17. Jinggang Shan, Jiangxi. 18. Tianmu Shan, Zhejiang. 19. Jizu Shan, Yunnan.