Archaeosynthemis spiniger is a species of dragonfly of the family Synthemistidae,[3] known as the spiny tigertail.

[4] It is a medium-sized dragonfly with black and yellow markings.

[4] It inhabits streams and rivers in south-western Australia.

[5][6] Archaeosynthemis spiniger was once known as Synthemis spiniger.

[7]