Abstract A new species is described belonging to the genus Chaerilus Simon, 1877. Chaerilus annapurna sp. n. was discovered in the high plateaux of the Himalayas in Central-Western Nepal. For comparative purposes a precise re-diagnosis is proposed for Chaerilus truncatus Karsch, 1879, originally described from an imprecise locality in Himalaya. This species has recently been discussed by several authors: nevertheless, it has sometimes been the subject of misidentification.