Basis for Former Listing

Hydroptila novicola is known in Minnesota from approximately 30 localities in the northeastern portion of the state, most recently in 2001. These occurrences are disjunct from the other known populations of this species in the northeastern and southeastern United States. Further inventory work is needed to find additional populations of H. novicola and delineate its range in the state. H. novicola was listed as a special concern species in Minnesota in 1996.

  Basis for Delisting

Extensive sampling was conducted between 1999-2001 during which several additional populations of H. novicola were found in northern Minnesota. These occured in a variety of habitats suggesting the species isn't restricted by habitat. Based on these data, H. novicola appears to be more common and widespread in Minnesota than it was once thought to be, making special concern status unnecessary. Hydroptila novicola was delisted in 2013.

  References and Additional Information

Houghton, D. C., and R. W. Holzenthal. 2003. Updated conservation status of protected Minnesota caddisflies. The Great Lakes Entomologist 36(1-2):35-40.

Houghton, D. C., R. W. Holzenthal, M. P. Monson, and D. B. MacLean. 2001. Updated checklist of the Minnesota caddisflies (Trichoptera) with geographic affinities. Transactions of the American Entomological Society 127(4):495-512.

Minnesota Department of Natural Resources. 2012. Statement of need and reasonableness. Minnesota Department of Natural Resources. Division of Ecological and Water Resources. St. Paul, Minnesota. 337 pp.

Monson, M. P. 1994. The caddisflies (Insecta: Trichoptera) of the Lake Itasca region, Minnesota, and a preliminary assessment of the conservation status of Minnesota Trichoptera. Thesis, University of Minnesota, Saint Paul, Minnesota. 135 pp.

Wiggins, G. B. 1996. Larvae of the North American caddisfly genera (Trichoptera), Second edition. University of Toronto Press, Ontario, Canada. 457 pp.