Ambrosiophilus cristatulus (Schedl, 1953)

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

Ambrosiophilus cristatulus (Schedl, 1953) Fig. 13G, H, L

Xyleborus cristatulus Schedl, 1953b: 300.

Ambrosiodmus cristatulus (Schedl): Wood and Bright 1992: 672.

Ambrosiophilus cristatulus (Schedl): Beaver et al. 2014: 24.

Type material.

Lectotype (NHMW). Not examined.

Diagnosis.

2.1-2.3 mm long (mean = 2.21 mm; n = 4); 2.3-2.39 × as long as wide. This species is distinguished by declivital interstriae 1 unarmed, interstriae 2 armed by one tubercle at declivital summit, remainder of interstriae 2 unarmed, interstriae 3 with three small denticles; declivity weakly bisulcate from sutural margin to striae 2, interstriae 3 weakly convex; pronotal surface shagreened, discal punctures small, fine, moderately spaced by 1-3 diameters of a puncture; declivital surface smooth, shiny; and small size.

Similar species.

Ambrosiophilus consimilis , A. indicus , A. subnepotulus .

Distribution.

China (Fujian), East & West Malaysia, Thailand.

Host plants.

Unknown.

Figures

Figure 13. Dorsal, lateral and declivital view of Ambrosiophilus atratus, 3.3 - 3.5 mm (A, B, I), A. caliginestris holotype, 2.9 mm (C, D, J), A. consimilis holotype, 2.6 - 3.5 mm (E, F, K), and A. cristatulus, 2.1 - 2.3 mm (G, H, L).