Cordulia Leach, 1815 (Corduliidae) - American Emerald
Cordulia shurtleffi Scudder, 1866 - American Emerald

Notes - References
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Page last updated: 23 Jan. 2017

Notes on Cordulia shurtleffi in Michigan

The one species of the genus found in North America - Cordulia shurtleffi - is widespread in our area (Map 1, below).

Map 1: Distribution of Cordulia shurtleffi in Michigan, based on MOS data.
Click on map to enlarge

Fairly hairy, robust nymph are distinguished by their distinct brown lateral thoracic stripe and lack of mid-dorsal abdominal hooks. Walker and Corbet (1975) indicate that this fairly common species prefers sphagnum bogs and ponds, and larvae appears to be able to tolerate poorly oxygenated, stagnant waters. Emergence in Michigan is fairly early, from the beginning of May into June.

Other links with information on the biology or ecology of larval Cordulia:
Brief habitat notes from Ottawa (Ontario, Canada) >>

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Leach, W. E. 1815. Entomology, pp. 52-172. In Brewster's Edinburgh encyclopaedia. Vol. 9. Edinburgh.

Scudder, S. H. 1866. Notes on some Odonata from the White Mountains of New Hampshire. Proceedings of the Boston Society of Natural History 10:211-222.

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

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