Eustheniidae

Eustheniidae is a family of insects in the order Plecoptera, the stoneflies. They are native to Australia, New Zealand, and Chile.

The nymphs live in lakes and in swift-flowing rivers and streams, where they cling to rocks. They are carnivorous. They take two to three years to develop into adults.

Genera include:
 * Cosmioperla McLellan, 1996
 * Eusthenia Westwood, 1832
 * Neuroperla Illies, 1960
 * Neuroperlopsis Illies, 1960
 * Stenoperla McLachlan, 1867
 * Thaumatoperla Tillyard, 1921
 * † Boreoperlidium Sinitshenkova, 2013
 * † Stenoperlidium Tillyard, 1935