Typhochlaena costae is a species of tarantula in the family Theraphosidae, subfamily Aviculariinae.

[1] The specific name honors Miriam Costa, who collected the holotype and several other spider taxa during her several years at Instituto Butantan.

The male has a thinner and shorter embolus than other Typhochlaena species.

The female has non-spiraled spermathecae, which diverge in the basal sections and are quite long.

The chelicerae and the very most anterior dorsal edge of the cephalothorax (which is otherwise brown) have long, and very stiff setae.