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

(Figs 13, 14)

Material examined. THAILAND: Surat Thani Province, 9 ♂, 14 ♀, Tha Chang District, Ban Khao Than (9°19’43.4”N 99°12’31.6”E), 21.IV. 2015, coll. A. Samoh. Satun Province, 1 ♂, 3 ♀, Mueang District, Tammalang, (6°32’21.7”N 100°04’09.3”E), sweep netting, 2. V.2015, coll. A. Samoh ; 2 ♂, 1 ♀, Langu, Pakbara (6°50’30.4”N 99°46’32.9”E), sweep netting, 29.IV.2015, coll. A. Samoh. Pattani Province, 2 ♂, 7 ♀, Muang District, Prince of Songkla University Pattani campus (PSU), (6°53’04.9”N 101°14’10.1”E), sweep netting and Malaise trapping, 11.IV.2015, coll. A. Samoh ; 3 ♂, 4 ♀, Yaring District, Ban Dato (6°55’17.1”N 101°19’50.7”E), sweep netting, 14.IV.2015, coll. A. Samoh ; Ban Pak Phanang Tawantok, Pak Phanang, Nakhon Si Thammarat, (8°22’30.2”N 100°10’00.4”E), sweep netting, 1.IV.2015, coll. A. Samoh. Chumphon Province, 4 ♂, 3 ♀, Muang District, Phanangtak, (N 10°30’23.9’, E 99°13’55.6’), sweep neeting, 17.II.2015, coll. A. Samoh. Songkhla Province, 4 ♂, 2 ♀, Singha Nakhon District, Ban Hua Khao (7°12’03.6”N 100°34’36.8”E), sweep netting, 27. V.2015, coll. A. Samoh. SINGAPORE: 614 specimens have been collected from mangroves all around Singapore. 240 specimens have been barcoded.

Remarks. This is a small to medium-sized species (body length about 3.7 mm, wing length about 3.3 mm). Wing with wide, yellowish brown to grey stigma behind tip of R 1, stigma reaching the level of thickening of R 4+5. R 4+5 thickened from basal quarter (Zhang et al., 2008), but narrow again before reaching wing border.

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