Webbia subuculae (Browne, 1962) Fig. 5C, D New records. Songkhla Province, Ton Nga Chang Wildlife Sanctuary, 6°59'32.1"N, 100°08'57.8"E, tropical rainforest, ethanol baited trap, 01.iii.2015 (1), Surat Thani Province, Khao Sok National Park, 8°55'16.6"N 98°31'30.4"E, tropical rainforest, ethanol baited trap, 01.iv.2015 (1), Trang Province, Khao Banthat Wildlife Sanctuary, 7°24'54.6"N 99°49'47.5"E, tropical rainforest, ethanol baited trap, 01.xii.2013 (1), 01.ii.2014 (1) all W. Sittichaya (3 WSTC, 1, RABC). Diagnosis. 2.10–2.60 mm long (mean = 2.35 mm; n = 5); 2.96–3.21× as long as wide (mean = 3.05 mm; n = 5). This species is distinguished by the unarmed, carinate declivital margin; upper portion of declivity slightly concave, mid-part slightly convex; declivital face with small, equally sized granules, seriately arranged in central part of declivity, more irregularly arranged towards margins; moderately densely covered with semi-recumbent, slightly flattened hair-like setae, unarmed by spines or processes. W. planicauda also has an unarmed, carinate declivital margin, but is distinguished by the denser, feathery setae covering the declivital face, concealing the granules. Distribution. East Malaysia (Sarawak). New to Thailand (Songkhla, Surat Thani, Trang). Host plants. Unknown.

Published as part of Sittichaya, Wisut, Smith, Sarah M. & Beaver, Roger A., 2023, New species, taxonomic changes and newly recorded species of Webbia Hopkins, ambrosia beetles from Thailand and neighbouring countries (Coleoptera: Curculionidae: Scolytinae: Xyleborini), pp. 47-63 in Zootaxa 5264 (1) on pages 58-59, DOI: 10.11646/zootaxa.5264.1.3, http://zenodo.org/record/7836130