SAC SPIDER

also called Two-clawed Hunting Spider, any member of the family Clubionidae (order Araneida), a relatively common, widespread group. Sac spiders range in body length from 3 to 15 mm (about 0.12 to 0.6 inch) and build silken tubes under stones, in leaves, or in grass. Chiracanthium inclusum, found throughout the United States, is venomous to humans. Its greenish white body is about 8 mm long.