Arixyleborus hirsutulus Schedl, 1969

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

Arixyleborus hirsutulus Schedl, 1969 Fig. 26A, B, I

Arixyleborus hirsutulus Schedl, 1969a: 212.

Type material.

Holotype (PPST). Not examined.

Diagnosis.

2.0 mm long (n = 1); 2.27 × as long as wide. This species is distinguished by the protibiae posterior faces flat, unarmed; antennal club as broad as tall; posterolateral carina oblique, granulate; elytral weakly convex, without a transverse depression; striae not impressed; declivital striae and interstriae covered with small equally sized granules; and elytra densely covered with setae, setae increasing in density towards apex.

Similar species.

Arixyleborus granulifer , A. sittichayai .

Distribution.

Philippines, Thailand. Imported to Japan from ‘Borneo’ and Indonesia (Maluku) ( Sittichaya et al. 2019).

Host plants.

Recorded from Anisoptera , Dipterocarpus , Dryobalanops , Shorea . ( Dipterocarpaceae ), Artocarpus ( Moraceae ), and an unidentified species of Sapotaceae ( Ohno 1990).

Figures

Figure 26. Dorsal, lateral and declivital view of Arixyleborus hirsutulus, 2.0 mm (A, B, I), A. leprosulus, 1.9 - 2.0 mm (C, D, J), A. malayensis, 2.1 mm (E, F, K), and A. mediosectus, 1.9 - 2.0 mm (G, H, L).