Hercostomus plumatus Zhang, Yang & Grootaert, 2008 (New record)

(Figs 15, 16)

Material examined. THAILAND: Nakhon Si Thammarat Province, 10 ♂, Pak Pha Nang Bang Kong Khong (8°24’09.4”N 100°11’29.9”E), 29.IV.2015, coll. A. Samoh. Songkhla Province, 3 ♂, Chana District, Ban Nathab (7°01’25.8”N 100°43’05.0”E), sweep netting, 27.IX.2014, coll. A. Samoh. Surat Thani Province, 1 ♂, 1 ♀, Phum Riang district, Ban Nua Nam (9°23’34.0”N 99°15’24.0”E), 22.IV.2015, coll. A. Samoh. SINGAPORE: 1605 specimens have been collected in mangroves all over Singapore while nearly 500 specimens have been barcoded.

Remarks. Body length 2.4–2.7 mm, wing length 2.2–2.5 mm. First flagellomere 1.2 times as long as wide (Zhang et al., 2008). Fore coxa yellow, mid and hind coxae brownish. Dorsal lobe of surstyli with plumose hair.

Distribution. THAILAND: Nakhon Si Thammarat, Songkhla, and Surat Thani (Fig. 7).