Arixyleborus puberulus (Blandford, 1896)

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 puberulus (Blandford, 1896) Fig. 28A, B, I

Xyleborus puberulus Blandford, 1896b: 215.

Arixyleborus puberulus (Blandford): Browne 1955: 351.

Xyleborus hirtipennis Eggers, 1940: 146. Synonymy: Hulcr 2010: 106.

Type material.

Holotype Xyleborus puberulus (NHMUK).

Diagnosis.

2.6-2.9 mm long (mean = 2.66 mm; n = 5); 2.48-2.64 × 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 disc flat, without a transverse depression; elytral striae deeply impressed on disc; elytral interstriae with at least two rows of tubercles and long erect fine hair-like setae, setae 2 × width of an interstria.

Similar species.

Arixyleborus moestus , A. scabripennis , A. setosus .

Distribution.

Indonesia (Java), East Malaysia, New Guinea, Thailand.

Host plants.

Recorded from three genera of Dipterocarpaceae , Canarium ( Burseraceae ) ( Ohno 1990) and Hevea ( Euphorbiaceae ).

Remarks.

Hulcr and Cognato (2013) synonymised Xyleborus morio Eggers, 1923 with this species. However, we consider it to be a distinct species. Hence it is not included in the list of synonyms.

Figures

Figure 28. Dorsal, lateral and declivital view of Arixyleborus puberulus, 2.6 - 2.9 mm (A, B, I), A. resecans paratype, 3.0 mm (C, D, J), A. rugosipes, 1.7 - 2.0 mm (E, F, K), and A. scabripennis, 2.5 - 2.55 mm (G, H, L).