Streptocranus bicolor Browne, 1949

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

Streptocranus bicolor Browne, 1949 Fig. 75A, B, I

Streptocranus bicolor Browne, 1949: 900.

Coptoborus bicolor (Browne): Wood and Bright 1992: 662.

Streptocranus bicolor Browne: Hulcr et al. 2007: 582.

Type material.

Holotype (NHMUK).

Diagnosis.

2.4-3.6 mm long (mean = 2.69 mm; n = 5); 4.0-4.17 × as long as wide. This species is distinguished by its moderate size; strongly attenuate elytra; and dorsal margin of elytral process with a minute denticle (occasionally absent) at the level of the elytral apex.

Similar species.

Streptocranus fragilis , S. mirabilis , S. petilus .

Distribution.

East & West Malaysia, Thailand.

Host plants.

Recorded from Dryobalanops , Shorea ( Dipterocarpaceae ), Eugenia ( Myrtaceae ), and Palaquium ( Sapotaceae ). Probably polyphagous ( Beaver et al. 2014).

Figures

Figure 75. Dorsal, lateral and declivital view of Streptocranus bicolor, 2.4 - 3.6 mm (A, B, I), S. bicuspis lectotype, 2.2 - 3.4 mm (C, D, J), S. fragilis holotype, 1.9 - 2.15 mm (E, F, K), and S. mirabilis lectotype, 4.1 - 4.9 mm (G, H, L).