Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
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Species Dromogomphus spinosus - Black-shouldered Spinyleg

Black-Shouldered Spinyleg - Dromogomphus spinosus - male Black-shouldered Spinyleg - Dromogomphus spinosus - female 2008-09-13-GM-ODE1 - Dromogomphus spinosus Dromogomphus spinosus - male Black-shouldered spinyleg clubtail dragonfly - Dromogomphus spinosus - male Black-shouldered Spinyleg dragonfly - Dromogomphus spinosus - female Dromogomphus spinosus NJ July - Dromogomphus spinosus - male Black-shouldered spinyleg dragonfly - Dromogomphus spinosus
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)
body length 54-67 mm
Spines on upper leg are of two lengths, longer ones interspersed with shorter ones. Capital "I" on top of thorax is distinctive. (1)
Eastern US and southeastern Canada.
Rivers, streams, small lakes with sandy or muddy bottoms.
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 (Odonata Central)
live adult image (Paul Pratt, Ontario Odonata)
Works Cited
1.Dragonflies of Indiana
James R. Curry. 2001. Indiana Academy of Science.