Prosopistoma sinense Tong & Dudgeon, 2000

Boonsoong, Boonsatien & Sartori, Michel, 2019, Review and integrative taxonomy of the genus Prosopistoma Latreille, 1833 (Ephemeroptera, Prosopistomatidae) in Thailand, with description of a new species, ZooKeys 825, pp. 123-144 : 125-127

Prosopistoma sinense Tong & Dudgeon, 2000 Figures 1C, 4A, 4B, 4C, 4D, 5A, 5B, 5C, 12D, 14

Prosopistoma sinense Tong & Dudgeon, 2000: 122-128, figs. 1-14. (orig.); Barber-James, 2009: 153-154, Table 2 (morph. matrix); Tungpairojwong & Boonsoong, 2011: 68; Shi & Tong, 2013: 95 (key).

Material examined.

THAILAND; 2 larvae, Kanchanaburi province, Thong Pha Phum, Pussaduklang Ranger Station, 14°33'13"N, 98°34'17"E, 317 m, 20.II.2016, B Boonsoong leg. (ZMKU); 2 larvae, Kanchanaburi province, Thong Pha Phum, Pak Kok stream, 14°39'32.1"N, 98°31'59.2"E, 161 m, 20.II.2016, B Boonsoong leg. (ZMKU), 1 larva same data (MZL, GBIFCH00657969); 4 larvae, Chiang Mai province, Chiang Dao, Mae Na, 19°19'13.08"N, 98°53'25.98"E, 742 m, 11.III.2017, B Boonsoong leg. (ZMKU).

Diagnosis.

The larvae of Prosopisoma sinense can be distinguished from those of other congeners by (i) antennae with 4-5 segments, (ii) antenna segment III much longer than the combined length of segments IV–V (iii) and apex of the ventral margin of the fore-tibia with 6-8 serrated spines (Fig. 4B) ( Shi and Tong 2013).

Distribution.

Kanchanaburi province (W), Chiang Mai province (N).

Remarks.

The larvae of P. sinense were originally described by Tong and Dudgeon (2000) and collected from China (Guangdong, Hongkong). In Thailand, Tungpairojwong and Boonsoong (2011) reported this species from a slightly disturbed stream in Kanchanaburi province. In this study, we found the larvae in the same habitat (Fig. 12D) and streams as previous studies. In addition, we found this species at a slightly disturbed stream in Chiang Dao, Chiang Mai province (N).