Coptotermes kalshoveni Kemner, 1934 (Figures 5A–E, 13C) Coptotermes kalshoveni Kemner, 1934: 61. Material examined THAILAND: Trang: Ka Chong, 3 March 1962, M. Ahmad coll. [NHML]; Narathiwat: two series, Hara Bara Wildlife Sanctuary, 300 m alt., 29 May 1997, Y. Takematsu coll.; Phu To Daeng, 31 May 1997, Y. Takematsu coll. Diagnosis Soldier. Head and pronotum sparsely hairy; postmentum with several long hairs. Head subcircular, considerably narrowed anteriorly, bHW / mHW 0.50–0.55 (0.52); mandibles weakly incurved, LML / HL 0.57–0.63 (0.59). Antennae with 13–14 segments. Narrowest part of postmentum located about one-third of the distance from the posterior margin to the widest point. Measurements (mm) Eleven soldiers from three series: HL, 1.04–1.20 (1.10); mHW, 0.94–1.01 (0.97); LML, 0.61–0.74 (0.65); PL, 0.35–0.40 (0.37); PW, 0.60–0.73 (0.65); PosL, 0.61–0.70 (0.65); PosW, 0.29–0.34 (0.31). Distribution Thailand (South), Peninsular Malaysia, Sumatra, Borneo, Java. Remarks This species has only been recorded south of the Kra Isthmus (Figure 13C). This small species can be distinguished from the smaller individuals of C. gestroi by having a more rounded head that is strongly narrowed anteriorly, and the postmentum narrowest near the posterior end.

Published as part of Takematsu, Yoko & Vongkaluang, Charunee, 2012, A taxonomic review of the Rhinotermitidae (Isoptera) of Thailand, pp. 1079-1109 in Journal of Natural History 46 (17 - 18) on pages 1088-1089, DOI: 10.1080/00222933.2011.651653, http://zenodo.org/record/5199813