Tetrathemis irregularis

Tetrathemis irregularis is a species of dragonfly in the family Libellulidae, known as the rainforest elf. It is a tiny to small, slender dragonfly with black and yellow markings. It inhabits rainforest streams in north-eastern Australia and Southeast Asia, including the Aru Islands.

Subspecies
The species Tetrathemis irregularis includes the following subspecies:
 * Tetrathemis irregularis irregularis Brauer, 1868 - found in South-east Asia and New Guinea
 * Tetrathemis irregularis cladophila Tillyard, 1908 - found in Australia and the Aru islands