Anisandrus improbus (Sampson, 1913)

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

Anisandrus improbus (Sampson, 1913) Fig. 21E, F, K

Xyleborus improbus Sampson, 1913: 444.

Anisandrus improbus (Sampson): Hulcr et al. 2007: 578.

Type material.

Holotype (NHMUK).

Diagnosis.

3.3-3.4 mm long (mean = 3.4 mm; n = 2); 2.43-2.54 × as long as wide. This species is distinguished by the mesonotal mycangial tuft the length of the scutellum; elytral disc convex; declivity appearing flat when viewed laterally; declivital striae clearly impressed; declivital summit armed by a minute denticle on each interstriae 2 and 3; granules present on basal 1/2 of interstriae 2-4; declivital posterolateral margin costate to interstriae 7; declivital face strongly shiny; and declivital interstriae clearly punctate.

Similar species.

Anisandrus eggersi , A. feronia , A. mussooriensis .

Distribution.

China (Xizang), India (Assam, West Bengal).

Host plants.

Recorded from Quercus ( Fagaceae ), Machilus ( Lauraceae ), and Eucalyptus ( Myrtaceae ) ( Maiti and Saha 2004).

Figures

Figure 21. Dorsal, lateral and declivital view of Anisandrus hera holotype, 3.9 mm (A, B, I), A. hirtus, 3.4 - 4.5 mm (C, D, J), A. improbus holotype, 3.3 - 3.4 mm (E, F, K), and A. klapperichi 5.4 - 5.6 mm (G, H, L).