Coptodryas confusa Hopkins, 1915

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

Coptodryas confusa Hopkins, 1915 Fig. 36A, B, I

Coptodryas confusa Hopkins, 1915a: 54.

Xyleborus cryphaloides Schedl, 1942a: 191. Synonymy: Wood and Bright 1992: 823.

Type material.

Holotype Coptodryas confusa (NMNH).

Diagnosis.

1.8-2.2 mm long (mean = 2.18 mm; n = 5); 2.0-2.25 × as long as wide. This species can be identified from all other species in the region by its unique mycangia that include both typical elytral mycangia with conspicuous medial tufts of setae and a pair of pit mycangia located near the pronotal base. In addition, the protibiae have evenly rounded outer margins; elytral strial and interstrial punctures confused; interstriae tuberculate; elytra setose; pronotum tall (type 2) when laterally viewed; and pronotum anterior margin unarmed by a row of serrations.

Similar species.

Coptodryas bella .

Distribution.

Brunei, East & West Malaysia, Philippines, Thailand.

Host plants.

Apparently highly host-selective and recorded only from trees of the family Dipterocarpaceae ( Browne 1961b; Wood and Bright 1992).

Remarks.

Browne (1961b) notes that the species attacks trees of any size down to approximately 5 cm diameter, and has been known to attack newly sawn, unseasoned boards in a sawmill.

Figures

Figure 36. Dorsal, lateral and declivital view of Coptodryas confusa, 1.8 - 2.2 mm (A, B, I), C. elegans syntype, 2.1 - 2.4 mm (C, D, J), C. inornata holotype, 3.1 - 3.2 mm (E, F, K), and C. mus, 2.3 - 2.4 mm (G, H, L).