Arixyleborus nudulus Smith, Rabaglia & Cognato, 2018

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 nudulus Smith, Rabaglia & Cognato, 2018 Fig. 27E, F, K

Arixyleborus nudulus Smith, Rabaglia & Cognato, 2018 (in Smith et al. 2018c): 841.

Type material.

Holotype (NMNH), paratypes (MSUC, 3; NMNH, 1).

Diagnosis.

1.5-1.8 mm long (mean = 1.56 mm; n = 5); 2.5-3.0 × as long as wide. This species is distinguished by the protibiae posterior faces inflated, granulate; antennal club wider than long; pronotum lateral margin oblique; pronotum anterior margin without serrations; posterolateral carina acute, denticulate; strial furrows and interstrial ridges anteriorly extending no further than midpoint of disc; and interstriae sparsely setose with minute bristles, almost appearing glabrous.

Similar species.

Arixyleborus mediosectus .

Distribution.

Vietnam.

Host plants.

Unknown.

Figures

Figure 27. Dorsal, lateral and declivital view of Arixyleborus minor, 1.2 - 1.4 mm (A, B, I), A. moestus paratype, 2.5 - 2.7 mm (C, D, J), A. nudulus holotype, 1.5 - 1.8 mm (E, F, K), and A. phiaoacensis holotype, 2.2 mm (G, H, L).