Archibasis mimetes is a species of damselfly in the family Coenagrionidae, commonly known as a blue-banded longtail. It is a medium-sized damselfly; the male is bright blue and black. It has been recorded from New Guinea and northern Australia, where it inhabits streams.
The species name mimetes is from a Greek word meaning imitative. Robin Tillyard named this species of damselfly after its close resemblance to Pseudagrion australasiae.