Euwallacea destruens (Blandford, 1896)

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

Euwallacea destruens (Blandford, 1896) Fig. 54C, D, J

Xyleborus destruens Blandford, 1896b: 221.

Euwallacea destruens (Blandford): Wood 1989: 173.

Xyleborus barbatus Hagedorn, 1910a: 11. Synonymy: Bright and Skidmore 1997: 4, 149.

Xyleborus barbatulus Schedl, 1934b: 86. Synonymy: Bright and Skidmore 1997: 4, 149.

Xyleborus pseudobarbatus Schedl, 1942a: 193. Synonymy: Wood 1989: 173.

Xyleborus nandarivatus Schedl, 1950a: 53. Synonymy: Wood 1989: 173.

Xyleborus procerrimus Schedl, 1969a: 214. Synonymy: Hulcr and Cognato 2013: 92.

Type material.

Syntype Xyleborus barbatus (SDEI). Syntype Xyleborus destruens (NHMUK).

Diagnosis.

3.9-4.6 mm long (mean = 4.19 mm; n = 6); 2.54-2.79 × as long as wide. This species is distinguished by its large body size and elongate form; protibiae distinctly triangular with 4-6 denticles in the apical 1/2; declivity commencing at posterior 1/3, steeper than in E. gravelyi , and usually appearing concave in lateral view.

Similar species.

Euwallacea gravelyi .

Distribution.

From the Andaman Islands, and Southwest China, through Southeast Asia to Malaysia, Indonesia and the Philippines to New Guinea, Australia and the Pacific islands. Recorded in the study region from China (Yunnan), India (Andaman Is), Taiwan, Thailand, Vietnam.

Host plants.

Polyphagous ( Browne 1961b).

Remarks.

The species is an important pest of teak ( Tectona grandis ) ( Lamiaceae ) in Java and other areas where there is only a short or no dry season ( Browne 1968a; Kalshoven 1962).

Figures

Figure 54. Dorsal, lateral and declivital view of Euwallacea andamanensis, 2.8 - 3.4 mm (A, B, I), E. destruens, 3.9 - 4.6 mm (C, D, J), E. fornicatior, 2.20 - 2.37 mm (E, F, K), and E. fornicatus, 2.6 - 2.7 mm (G, H, L).