UPCOMING EVENTS
View full calendarKey to Aquatic Macroinvertebrates in Utah - Megaloptera
The Megaloptera Order includes dobson flies, alder flies, and helgramites. They are identified by the lateral filaments on each abdominal segment. They are found in the southern half of the state.
Family
Corydalidae (dobson flies, fish flies, helgramites)
Description: Up to 100 mm in length. Corydalidae have lateral filaments on abdominal segments
1-8 and 2 pairs of lateral hooks on the last abdominal segment.
They have large aggressive mandibles.
Habitat: In Utah, confined to larger streams in the Colorado Plateau. Commonly associated with debris fans and riffles at the mouth of side canyons.
Sialidae (alder flies)