Didymops Rambur, 1842 - Cruisers
Didymopstransversa(Say,1839) - Stream Cruiser

Notes -References
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Page last updated: 03August 1998 (EB)

Notes on Didymopstransversa inMichigan

Of the two species of Didymops found in NorthAmerica, only D. transversais found in Michigan and is widespreadin our state (Map 1, below). (D.floridensis Davis (1921) is known only from Florida and Alabama).

Map 1: County distribution ofDidymops transversain Michigan
Click on map for a larger image

Larvae sprawl within the well-aerated sandy andmuddy substrates of lakes and sometimes slow-moving areas of streams.Their habits closely parallel those of our Macromia species(Walker andCorbet (1975). Adults emerge fromlate-May (s.LP) through the last half of June (UP), with exuviaefound some considerable distance from the water on bushes, treetrunks and buildings. At Ives Lake in northern Marquette Co, UP,emergence appears to be synchronous, with larvae crawling uponbuildings vertically a distance of over 3 m (pers. obs. 1996,1997).


Davis, W. T.. 1921. A new dragonfly fromFlorida. Bulletin of the Brooklyn Entomological Society16(5):109-111, 1 pl.

Rambur, J. P. 1842. Histoire naturelledes insectes neuroptères. LibraireEncyclopédique de Roret, Paris. 534 pp.

Say, T. 1839.Descriptions of new North American neuropterous insects andobservations on some already described by (the late) Th. Say.Journal of the Academy of NaturalScience of Philadelphia 8:9-46.

Walker, E. M.and P. S. Corbet. 1975. The Odonata of Canada and Alaska, Vol. 3.University of Toronto Press: Toronto. xvi + 308 p.

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