Arixyleborus grandis (Schedl, 1942)

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 grandis (Schedl, 1942) Fig. 25C, D, J

Xyleboricus grandis Schedl, 1942c: 27.

Arixyleborus grandis (Schedl): Schedl 1952d: 161.

Type material.

Lectotype (NHMW), paralectotype (NHMW, 1).

Diagnosis.

3.2-3.5 mm long (mean = 3.43 mm; n = 4); 2.13-2.33 × as long as wide. This species is distinguished by the protibiae posterior faces inflated, granulate; antennal club wider than long; posterolateral costa carinate; pronotum lateral margin distinctly costate, nearly carinate; pronotum anterior margin elevated with row of serrations; large size; strial furrows 3 × the 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 moderately impressed; and declivity weakly shagreened, interstrial ridges almost appear shiny.

Similar species.

Arixyleborus malayensis , A. tuberculatus , A. yakushimanus .

Distribution.

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

Host plants.

Recorded from Canarium ( Burseraceae ), Dipterocarpus ( Dipterocarpaceae ), Mangifera ( Anacardiaceae ), and Palaquium ( Sapotaceae ) ( Beaver et al. 2014).

Remarks.

Kalshoven (1959b) gives some details of gallery systems and brood found in Canarium in Java.

Figures

Figure 25. Dorsal, lateral and declivital view of Arixyleborus crassior holotype, 2.0 mm (A, B, I), A. grandis, 3.2 - 3.5 mm (C, D, J), A. granifer, 2.8 - 3.0 mm (E, F, K), and A. granulifer, 1.9 - 2.0 mm (G, H, L).