Anisandrus Ferrari, 1867

Sittichaya, Wisut, Smith, Sarah M. & Beaver, Roger A., 2023, New species and newly recorded species of Anisandrus Ferrari, 1867 ambrosia beetles from Thailand (Coleoptera, Curculionidae, Scolytinae, Xyleborini), ZooKeys 1182, pp. 289-306 : 289

Anisandrus Ferrari, 1867

Anisandrus Ferrari, 1867: 24.

Type species.

Apate dispar Fabricius, 1792, by monotypy.

Differential diagnosis.

Antennal club obliquely truncate, type 1 (except A. achaete Smith, Beaver & Cognato, 2020, which is type 2) ( Hulcr et al 2007; Smith et al. 2020), club taller than wide (except A. achaete wider than tall); procoxae contiguous or narrowly separated; protibiae slender, obliquely or distinctly triangular, outer margin with 5-8 large socketed denticles on distal half, posterior face flat, unarmed, or with a few small granules; mesonotal mycangial tufts present (except A. achaete , A. carinensis (Eggers, 1923), A. paragogus Smith, Beaver & Cognato, 2020, and A. uniseriatus sp. nov.) along the pronotal base either as a small tuft the length of the scutellum and directly opposite it or extending laterally from the scutellum to striae 3 and with elytral base broadly, shallowly emarginated from the scutellum to striae 3; pronotum anterior margin with a row of serrations, pronotum lateral margins obliquely costate ( Smith et al. 2020).

Some Anisandrus species have a median pair of pronotal serrations larger than the remaining serrations and superficially resemble Cnestus Sampson species. The genera are easily separated by the lateral margin of the pronotum which is costate in Anisandrus and carinate in Cnestus .