Fortiborus macropterus (Schedl, 1935)

Smith, Sarah M., Beaver, Roger A. & Cognato, Anthony I., 2020, A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China, ZooKeys 983, pp. 1-442 : 1

Fortiborus macropterus (Schedl, 1935) Fig. 60A, B, G

Xyleborus macropterus Schedl, 1935b: 271.

Fortiborus macropterus (Schedl): Beaver et al. 2014: 51.

Type material.

Lectotype (NHMW).

Diagnosis.

4.8-5.1 mm long (mean = 4.93 mm; n = 3); 2.55-3.06 × as long as wide. This species is distinguished by the small size; conspicuously angulate elytral apex; posterolateral declivital costa weakly elevated and asperate; declivity appearing very broad and rounded; tubercles on declivital interstriae uniformly sized, present from base to apex; and discal interstrial punctures uniseriate.

Similar species.

Fortiborus major .

Distribution.

‘Borneo’, Indonesia (Sumatra), East & West Malaysia, Philippines, Thailand.

Host plants.

Apart from a single record from Sapotaceae , recorded only from various genera of Dipterocarpaceae ( Balanocarpus , Dipterocarpus , Dryobalanops , Hopea , Shorea , Vatica ) ( Browne 1961b; Ohno 1990).

Figures

Figure 60. Dorsal, lateral and declivital view of Fortiborus macropterus lectotype, 4.8 - 5.1 mm (A, B, G), F. major, 5.2 - 6.0 mm (C, D, H), and F. pseudopilifer, 6.6 mm (E, F, I).