New species and newly recorded species of Anisandrus Ferrari, 1867 ambrosia beetles from Thailand (Coleoptera, Curculionidae, Scolytinae, Xyleborini).

Five new species, Anisandrusmontanus sp. nov. , A.phithakpa sp. nov. , A.tanaosi sp. nov. , A.triton sp. nov. , and A.uniseriatus sp. nov. are described from Thailand. Anisandruscarinensis (Eggers, 1923) is reported from Thailand for the first time and A.apicalis is removed from the Thai fauna. With the inclusion of the species described and recorded here, the diversity of Anisandrus is increased to 40 species, of which 11 occur in Thailand. A synoptic list and a key to the Anisandrus of Thailand are presented.