Austrolestes aleison is an Australian species of damselfly in the family Lestidae,[3] commonly known as a western ringtail.

[4] It is endemic to south-western Australia, where it inhabits pools, ponds and lakes.

[5] Austrolestes aleison is a medium-sized to large damselfly, the male is blue and black.

[6] The word aleison is from the Greek word ἄλεισον, meaning a goblet.

In 1979, Tony Watson and Max Moulds named this species of damselfly after the goblet-shape of the mark on segment 2 of the male abdomen.