Fortiborus major (Stebbing, 1909) Fig. 60C, D, H

Phloeosinus major Stebbing, 1909: 19.

Xyleborus major (Stebbing): Stebbing 1914: 590.

Notoxyleborus major (Stebbing): Maiti and Saha 1986: 100.

Fortiborus major (Stebbing): Hulcr and Cognato 2010a: 17.

Xyleborus siclus Schedl, 1936d: 26. Synonymy: Hulcr and Cognato 2010a: 18.

Type material.

Holotype Phloeosinus major (FRI). Allotype Xyleborus siclus (NHMUK).

New records.

India: Andaman Islands, N. Andaman, 3.xi.1930, C.F.C. Beeson, Dipterocarpus turbinatus (NMNH, 1). [West] Bengal, Chilapata forest, Buxa, 1.ix.1915, C.F.C. Beeson, Shorea robusta bark (NMNH, 1).

Diagnosis.

5.2-6.0 mm long (mean = 5.58 mm; n = 5); 2.52-2.71 × as long as wide. This species is distinguished by the moderate size; conspicuously angulate elytral apex; posterolateral declivital costa conspicuously elevated and asperate, making the declivity appear very broad and flat; declivital interstrial granules uniformly sized, present from base to apex; and discal interstrial punctures confused.

Similar species.

Fortiborus macropterus .

Distribution.

‘Borneo’, India (Andaman Is*, Assam, West Bengal*), Indonesia (Mentawai Is, Sumatra), New Guinea, Thailand.

Host plants.

This species is also closely associated with Dipterocarpaceae (Browne 1961b). There are records of single specimens taken from three other families (Ohno 1990), but they may not have been breeding.