Runcinia acuminata is a species of crab spiders. Females reach a body length of about 10 mm, males less than 6 mm. They are often found in seeding heads of grasses, where the females build and camouflage their egg sacs. They mainly feed on moths that visit these grasses. Distribution This species is known from Bangladesh to Japan, Borneo, New Guinea and Australia (New South Wales and Queensland). Name The species name is derived from Latin acuminatus "pointed". External links Several pictures of a R. acuminata Thomisidae Spiders of Australia Spiders of Asia Spiders described in 1881