Abstract
Two new species of the spider family Theridiidae are described from Singapore and Indonesia under the names, Anelosimus kohi (Singapore) and Achaearanea triangula (Singapore and Indonesia). Anelosimus kohi sp. nov. is distinguished from the related species, A. crassipes and A. taiwanicus, by the straight embolus and long tibia of male palpus, and Achaearanea triangula sp. nov. is distinguished from A. camura, A. mundula, A. vervoorti, A. wau and A. kaindi, described from New Guinea by the triangular conductor.
