See text Thasus is an insect genus of the Coreidae, or leaf-footed bugs.

[1][2] It is a genus in the New World Nematopodini tribe that feeds on plants.

[4] In 1862, Carl Stål distinguished two types in the then existing genus Pachylis, those where the muscle widening (dilation) of the hind-leg tibia occurs only ventrally (downward), and those where it occurs on both sides (ventrally and dorsally).

[5] In 1865, he separated these into two genera, leaving the ventral only type in Pachylis, and moving the three species with the muscle widening on both sides into the newly established genus Thasus.

[4] Van Duzee later picked Thasus gigas as the type species (logotype) for the genus, as he felt that it best represented the characteristics of the genus.