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.