Tamopsis

Spiders in this genus are mostly endemic to Australia, with one species endemic to New Guinea.^[1]

Tamopsis species are small to medium-sized spiders. Females of the type species Tamopsis eucalypti have a body length of about 7 millimetres (0.28 in), and males have a body length of about 5 millimetres (0.20 in). They resemble other members of the family Hersiliidae in having unusually long posterior lateral spinnerets (the outside rear pair), which in some species can be longer than the abdomen. They live in trees rather than on the ground and do not make complex webs. Their legs are relatively long, with an undivided metatarsus. The chelicerae have three teeth at the front edge. The male palpal bulb has a complex median apophysis (projection), sometimes coiled and usually with a hook-shaped structure at the end. The embolus of the palpal bulb can slide out of a lateral apophysis, which otherwise partly or completely hides it. The female has one to three seminal receptacles on each side.^[2]

In 1987, Barbara Baehr and Martin Baehr reviewed the Australian members of the family Hersiliidae. They erected a new genus Tamopsis, and described 25 new species within the genus. Two species formerly placed in the genus Tama were transferred to Tamopsis.^[2] They described even more species in a series of papers from 1988 to 1998.^{[4][5][6][7][8][9]}

Two Australian species, T. novaehollandiae and T. brachyura, are regarded as doubtful because their described types are either juveniles or have been lost and are not identifiable from their descriptions.^[2]

As of October 2025^[update], this genus includes fifty species:^[1]