Taxonomic history

Xyleborus improbus Sampson, 1913: 444.

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

Diagnosis

3.3−3.4 mm long (mean = 3.4 mm; n = 2); 2.43−2.54 times as long as wide. This species can be 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 interstriae 2−3; granules present on basal half of interstriae 2−4; posterolateral margin costate to interstriae 7; declivital face strongly shining; and declivital interstriae clearly punctate.

May be confused with

Anisandrus eggersi, A. feronia, and A. mussooriensis

Distribution

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

Host plants

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

DNA data

specimens not available for sequencing