Cymatopus thaicus Grootaert & Meuffels, 2001

Figs. 6–8

Grootaert & Meuffels, 2001: 351 (figs 31–36).

Material examined. THAILAND: Andaman Sea: 4 males, Lidi Island, Langu, Satun Province (Andaman Sea), 6°46′56.4″N, 99°45′58.5″E, 30 July 2015, sweep netting, coll. A. Samoh; 12 males, 4 females, Tarutao Island, Langu, Satun Province, 6°44′19.2″N 99°38′45.4″E, 9 January 2015, sweep netting, coll. A. Samoh; 1 male, 1 female, Nang thong beach, 8°39′06.01″N, 98°14′46.60″E, Phang-Nga Province, 5 November 2017, hand collecting on rocks in the sea, leg. P. Grootaert & I. Van de Velde; 6 males, 4 females, Ko Phra Thong, 9°07′33.9″N 98°14′58.5″E, Phang-nga Province, leg. A. Samoh (PSUNHM).

NGS barcodes see annexe 1.

Diagnosis. A small species (2–2.2 mm) with yellow legs. Fore tibia with a black foliaceous bristle and without an apical spur, but with a long black apical bristle on a short tubercle. Tarsomere 4 dorsally somewhat excavated with long dorsal bristles and as long as the flattened tarsomere 5. Posterior wing border normal, set with equally long hairs. Veins not deformed. Male terminalia as in Fig. 8.

Distribution. Thailand, Malaysia and Singapore.

The longipilus -group

Only one species in Thailand.