Webbia Hopkins, 1915b: 222.
Xelyborus Schedl, 1939a: 349. Browne, 1963: 57.
Prowebbia Browne, 1962: 208. Browne, 1972: 25.
1.90−3.40 mm long, 2.6−3.75 times as long as wide. Webbia can be distinguished by the scutellum narrow, minute, convex, and slightly raised above elytra; dense tuft of setae present along elytral base associated with an elytral mycangium; antennal funicle 2-segmented; protibia slender, lateral margin armed with more than 9 denticles, posterior face inflated, unarmed; pronotum conspicuously elongated, rectangular in dorsal aspect, disc flat, anterolateral corners inflated (type a); elytra with few setae, abruptly truncated, and often elaborately ornamented with large projections.
Amasa, Arixyleborus, Cyclorhipidion and Pseudowebbia
throughout the Paleotropics
The unbranched radial entrance tunnel leads to a single large brood chamber in the longitudinal plane (Browne 1961b).
The majority of species are strongly associated with Dipterocarpaceae, but single species are specialised on Fagaceae and Sapotaceae (Browne 1961b).