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TaxonomyBrowse
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Species Dromogomphus spinosus - Black-shouldered Spinyleg

Black-Shouldered Spinyleg - Dromogomphus spinosus - male Black-shouldered Spinyleg - Dromogomphus spinosus - female Unknown Club or snaketail - Dromogomphus spinosus MN June - Dromogomphus spinosus Black-shouldered Spinyleg  - Dromogomphus spinosus - male Clubtail from Benzie Co - Dromogomphus spinosus Clubtail in Otisfield, Maine - Dromogomphus spinosus Black-shouldered Spinyleg - Dromogomphus spinosus - male
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Odonata (Dragonflies and Damselflies)
Suborder Anisoptera (Dragonflies)
Family Gomphidae (Clubtails)
Genus Dromogomphus (Spinylegs)
Species spinosus (Black-shouldered Spinyleg)
Size
body length 54-67 mm
Identification
Spines on upper leg are of two lengths, longer ones interspersed with shorter ones. Capital "I" on top of thorax is distinctive. (1)
Range
Eastern US and southeastern Canada.
Habitat
Rivers, streams, small lakes with sandy or muddy bottoms.
Season
End of May to mid-September in the midwest. May to November in the south.
Internet References
live adult image by John Abbott, plus overview (Odontata Central)
live adult image (Paul Pratt, Ontario Odonata)
Works Cited
1.Dragonflies of Indiana
James R. Curry. 2001. Indiana Academy of Science.