Webbia biformis Browne, 1958 Fig. 79A, B, I

Webbia biformis Browne, 1958: 496.

Type material.

Holotype (NHMUK), paratypes (NHMUK, 3).

Diagnosis.

2.4-3.0 mm long (mean = 2.67 mm; n = 3); 3.43-3.75 × as long as wide. This species is distinguished by the circumdeclivital margin denticulate; declivital face bearing a large triangular spine that is as much broader at apex than base; base of spine elongate, occupying approximately 1/3 of declivital length; acute spine at elytral apex arising from the sutural interstriae; and discal interstriae 1 denticulate, never prolonged into a short spine over the declivity.

Similar species.

Webbia diversicauda, W. pabo .

Distribution.

East & West Malaysia, Thailand.

Host plants.

Associated with Dipterocarpaceae ( Dipterocarpus, Hopea, Shorea) (Browne 1961b; Beaver and Browne 1975, 1979).

Remarks.

Brood size can be as high as 120 in a gallery (Beaver and Browne 1979).