Aquatic Critters

DobsonflyThe adult dobsonfly is a large dark flying insect. Most dobsonfly species are nocturnal. Males of some species have mandibles which are tusklike. They can bite.

Dobsonfly Nymph (hellgrammite)The dobsonfly nymph, known as hellgrammite, is predaceous, feeding on smaller aquatic invertebrates. They are large larvae up to 3 inches (7.5 cm) in length, which strong jaws and legs and seven or eight pairs of gill filaments attached to the abdomen, which look like small legs. They are most often found in fast moving streams. Fisherman use the hellgrammites for bait.

Copyright © 2002 Missouri Botanical Garden
MBGnet Home