Consult the references at the end of this publication for more detailed information on identification and on the biology and ecology of these or other invertebrates. Adults are terrestrial, meaning they live on land. Photo courtesy of Howell Daly. Photo courtesy of Ralph Charlton. Like mayflies, most stonefly nymphs are flattened.
Adults are terrestrial.
Adults of both groups are terrestrial. Figure 4 . Note the three leaf-like gills at the end of the abdomen. The last abdominal segment bears a pair of fleshy appendages with hooks. Adults are terrestrial and resemble small moths.