Arixyleborus malayensis (Schedl, 1954)

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 malayensis (Schedl, 1954) Fig. 26E, F, K

Xyleboricus malayensis Schedl, 1954a: 150.

Arixyleborus malayensis (Schedl): Schedl 1958c: 145.

Type material.

Lectotype (NHMW), paralectotypes (NHMW, 3).

New records.

China: S -Yunnan, Xishuangbanna, 37 km NW Jinghong, vic. Guo Men Shan, 22°14.48'N, 100°36.22'E, 780 m, 06.iv.2009, L. Meng (RABC, 1).

Diagnosis.

2.1 mm long (mean = 2.1 mm; n = 5); 2.63 × as long as wide. This species is distinguished by the protibiae posterior faces inflated, granulate; antennal club wider than long; posterolateral carina costate; pronotum lateral margin distinctly costate, nearly carinate; pronotum anterior margin elevated with a row of serrations; strial furrows 3 × width of interstrial ridges on disc; interstrial ridges setose, setae recumbent, hair-like, as long as striae 2 width at declivital base; interstrial ridges denticulate; striae strongly impressed; declivity weakly shagreened, interstrial ridges almost appear shiny; and moderate size.

Similar species.

Arixyleborus grandis , A. tuberculatus , A. yakushimanus .

Distribution.

China* (Yunnan), Indonesia (Java, Sumatra), West Malaysia, Sri Lanka, Thailand, Vietnam.

Host plants.

Polyphagous ( Beaver et al. 2008).

Remarks.

The gallery system is typical of the genus. One gallery excavated by Kalshoven (1959b) contained 47 offspring.

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).