Aquatic Insects of Michigan
by Ethan Bright, Museum of Zoology Insect Division and School of Natural Resources and Environment
Macromiidae (Cruisers) of Michigan - Identification
Mature nymphs are large sprawlers in loose substrates, distinctive for their very long, slender legs with simple, slender long tarsal claw, and oval, broad abdomens adorned with sharp, cultriform dorsal hooks. Nymphs are frequently found in larger streams as well as channels and lakes. They are absent from stagnant waters. Members of this family are most diverse in warmer regions of the world, with a few species extending into colder regions. Four species in two genera of Macromiidae are found in Michigan: Macromia illinoiensis and Didymops transversa are commonly encountered in most parts of the state, with Macromia taeniolata and Macromia alleghaniensis less commonly encountered in the southern LP.
Taxanomic references (Needham et al. 2014, Tennessen 2019)
Page created: June 10, 2003; Last edited: April 19, 2020 (EB)