If freshwater insects did senior superlatives before graduating from aquatic life, what would yearbook entries say about dobsonflies? Largest? Most ferocious? Most likely to change names? Most likely to bite a human? Or to be used as fish bait? Or to be confused with a centipede?
All of these superlatives apply to larval hellgrammites – insects that, upon emerging from the water, promptly change names to become dobsonflies. These fascinating predators spend their larval stage eating other invertebrates, including other hellgrammites. They’re equipped with impressive mandibles that can open wider than the width of their own heads and can handily crunch through the tough exoskeletons of most insects. An occasional angler has learned the hard way that the mandibles of larger hellgrammites are quite capable of penetrating human skin. » Continue Reading.