Austroperlidae

Austroperlidae is a family of stoneflies in the order Plecoptera.

There are about 10 genera and 15 described species in Austroperlidae across southern land masses Australia, New Zealand, and South America.

[1][2]Austroperlidae species are unique among stoneflies in having aposematic (warning) colouration.

[3] For instance, the New Zealand black stonefly Austroperla is a forest dwelling shredder that is toxic to predators due to its production of hydrogen cyanide.

[4] The warning colouration of this species is mimicked by several lineages of the unrelated non-toxic New Zealand stonefly Zelandoperla.