Chromagrion Needham,1903
Chromagrionconditum (Hagen in Selys,1876) - OpenwingDamsel


Notes - References
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Page last updated: 11February 1998

Notes onChromagrionconditum in Michigan

A monotypic genus, the dark larvae ofC. conditum are easily distinguished by their angularposterolateral head, narrow legs, and dark, white-mottled andeventually white-tipped caudal gills (Walker 1953, Westfall and May1996). Widely distributed in Michigan(more common in the LP than the UP), larvae are found in unpollutedspring-fed brooks with ample riparian shading as well as clean pondsand lakes, clinging to submerged vegetation, leaves and other debris(Needhamand Heywood 1929, Garman 1927). Larvae emerge from late May through June.


References

Garman, P. 1927. Guide to the Insects of Connecticut,Part V : The Odonata or Dragonflies of Connecticut. ConnecticutGeological and Natural History Survey Bulletin 39, 331 pp.

Needham, J. G. 1903.Aquatic insects of New York State. Part 3. Life histories of Odonata,suborder Zygoptera. New York StateMuseum Bulletin 68:218-279.

Needham, J.G., and H. B. Heywood. 1929. A Handbook of the Dragonflies of NorthAmerica (Anisoptera). C. C. Thomas: Springfield, Illinois. 378pp.

Selys-Longchamps, M.E. de. 1876. Synopsis des agrionines, cinquième légion:Arion(suite). Le genre Agrion. Bulletin del'Académie royale des Sciences de Belgique (2) 41:247-322, 496-539, 1233-1309 (reprint1-199).

Walker, E. M. 1953.The Odonata of Canada and Alaska, Vol. 1. University of TorontoPress: Toronto, Ontario. xii + 292 pp.

Westfall, M.J., and M. L. May. 1996. Damselflies of North America. ScientificPublishers: Gainesville, Florida. x + 650 pp.