Tramea Hagen, 1861 (Libellulidae) -Saddlebags


Notes - MichiganSpecies List - Key -References
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Page last updated: 06August 1998 (EB)

Notes on theMichigan Species ofTramea

Adults of these dragonflies are powerful fliersand migrate considerable distances, and are world-wide indistribution. Two species have been recorded in Michigan. Like othermigratory dragonfly species, larvae can develop in short periods oftime and can thrive in temporory bodies of water.

T. lacerata isfound in open marshy lagoons and bays, probably does not overwinterin the larval stage in the morthernmost localities where adults havebeen recorded. Nymphs taken in s. Utah from a spring pond containingwatercress and other aquatic plants with trees and bushes surroundingthe pond; but elsewhere nymphs may occupy ponds without surroundingtrees (Musser1962). T.carolina is found in clear waters ofponds and small lakes, especially those with rooted, submergedvegetation, and occasionally in quiet streams. Bick (1950) found larvae from standing water in mud-bottomedponds.

WWW-links on the ecology and biology of larvalTramea:
no links found as of 04 April 1998


Michigan SpeciesList

Map 1Map 2
Maps 1-2: County distribution of the Michigan species of
Tramea
Click on map for largerimage

Tramea carolina (Linnaeus, 1763) - Carolina Saddlebags
Tramea lacerata Hagen,1861 - Black Saddlebags


Key to the Mature Larvae of Michigan Tramea
(Adapted from Walker and Corbet1975 and Huggins and Brigham1982)

1a. Paraproctslonger than the epiproct (picture); lateral spines on Ab8 directedapproximately straight posteriorly (picture); antennal segment 4more than 0.67x the length of antennal segment 3 (picture) -T. carolina

1b. Paraproctsshorter than the epiproct (picture); lateral spines on Ab8 curvedinwards (picture); antennal segment 4 less than 0.67x thelength of antennal segment 3 (picture) - T. lacerta

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References

Bick, G. H. 1950. Thedragonflies of Mississippi (Odonata: Anisoptera). American Midland Naturalist 43:66-78.

Hagen, H. A. 1861.Synopsis of the Neuroptera of North America, with a list of the SouthAmerican species. SmithsonianMiscellaneous Collections4:1-347.

Huggins, D.G., and W. U. Brigham. 1982. Odonata. pp. 4.1-4.100, in Aquatic Insects andOligochaetes of North and South Carolina. A. R. Brigham, W. U.Brigham, and A. Gnilka (eds.). Midwest Aquatic Enterprises: Mahomet,Illinois, USA.

Linne, C. 1763.Amoenitates academicae seu dissert, variae, etc. Vol. sextum. Homiae1763. CXXI. Centuria Insectorum, etc. 32 pp. Johansson,Upsaliae.

Musser, R. J. 1962.Dragonfly nymphs of Utah (Odonata: Anisoptera). University of UtahBiological Series 12(6):1-66.

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

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