Eusynthemis tillyardi is a species of dragonfly of the family Synthemistidae,[3][4] known as the mountain tigertail.

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

[5][6] It inhabits coastal and mountain streams in south-eastern Australia[7] Eusynthemis tillyardi appears similar to Eusynthemis guttata which is found in alpine streams.

[5]