Aquatic Insects of Michigan
by Ethan Bright, Museum of Zoology Insect Division and School of Natural Resources and Environment
Molannidae, Molanna (Hood Casemaker Caddisflies) of Michigan - Identification
Two genera of Molannidae occur in North America, Molanna and Molanniodes, of which only the former occurs in Michigan. Ross (1944) provided descriptions of the males of five species to occur in Michigan, and Roy and Harper (1980) described the females of Nearctic Molanna. Schmid (1983) provided a needed detailed update to Ross' descriptions, and also treated females. Larval descriptions for M. blenda, M. tryphena and M. uniophila were given by Sherberger and Wallace (1971), M. blenda, M. ulmerina, and M. uniophila by Morton and Stewart (1996), and M. flavicornis by Wiggins (1996). No one synopsis for the pupae has been published.
The common name (hood casemakers) refers to the distinctive shape and function of the cases that larvae create.
Adults (adapted from Roy and Harper 1980, Schmid 1983)
Ross HH. 1944. The Caddis Flies, or Trichoptera, of Illinois. Bulletin of the Illinois Natural History Survey 23(1):1-326.
Schmid F. 1983. Revision des trichoptères canadiens. III. Les Hyalopsychidae, Psychomyiidae, Goeridae, Brachycentridae, Sericostomatidae, Helicopsychidae, Beraeidae, Odontoceridae, Calamoceratidae et Molannidae. Mémoires de la Société Entomologique du Canada 125:1-109.
Sherberger FF, Wallace JB. 1971. Larvae of the southeastern species of Molanna. Journal of the Kansas Entomological Society 44(2):217-224.
Wiggins GB. 1996. Larvae of the North American caddisfly genera (Trichoptera). University of Toronto Press: Toronto, Ontario. 457 pp. + xiii.
Page created: October 23, 2003; Last edited: November 08, 2013 (EB)