Tetrathemis irregularis is a species of dragonfly in the family Libellulidae,[3][4] known as the rainforest elf.

[5] It is a tiny to small, slender dragonfly with black and yellow markings.

[5] It inhabits rainforest streams in north-eastern Australia[6] and Southeast Asia, including the Aru Islands.

[7] The species Tetrathemis irregularis includes the following subspecies:[5]