Arixyleborus suturalis (Eggers, 1936)

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 suturalis (Eggers, 1936) Fig. 29G, H, L

Xyleboricus suturalis Eggers, 1936b: 91.

Arixyleborus suturalis (Eggers): Schedl 1953b: 290.

Type material.

Paratype (NHMW).

New records.

Vietnam: Dong Nai, Cat Tien N.P., 11.44221, 107.43114, 379 m, 20-22.ii.2017, VN78, A.I. Cognato, T.A. Hoang, ex FIT (MSUC, 1).

Diagnosis.

1.5-1.7 mm long (mean = 1.6 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, carinate; and declivital interstriae 1 strongly elevated on apical 1/2, denticulate, denticles large.

Similar species.

Arixyleborus minor .

Distribution.

Indonesia (Java, Maluku), East & West Malaysia, Thailand, Vietnam*.

Host plants.

Polyphagous ( Browne 1961b).

Remarks.

Browne (1961b) gives some details of brood sizes and development.

Figures

Figure 29. Dorsal, lateral and declivital view of Arixyleborus setosus holotype, 2.5 mm (A, B, I), A. silvanus holotype, 1.65 - 1.8 mm (C, D, J), A. sittichayai holotype, 2.3 mm (E, F, K), and A. suturalis, 1.5 - 1.7 mm (G, H, L).