Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Species Gomphurus fraternus - Midland Clubtail

Midland Clubtail - Gomphurus fraternus - male Unicorn Clubtail? - Gomphurus fraternus Midland Clubtail - Gomphurus fraternus - male Clubtail - Gomphurus fraternus - male Midland Clubtail - Gomphurus fraternus - female Midland Clubtail (Gomphus fraternus) - Gomphurus fraternus Clubtail dagonfly - Gomphurus fraternus Clubtail dagonfly - Gomphurus fraternus
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 Gomphurus
Species fraternus (Midland Clubtail)
Size
length about 50-60 mm
Identification
side of abominal segments 8 and 9 with large yellow spot; dorsal surface of S9 entirely black; terminal club wide and flattened in male; individuals with turquoise eyes usually have light grayish-green patches on back of thorax - and those with grayish eyes usually have bright yellowish-green patches on back; face either pale yellowish or same color as dorsal thoracic patches; series of elongate and apically-pointed markings along top of abdomen, becoming increasingly shorter and more yellow rearward; oblique greenish stripes on side of thorax; remainder of body black; wings clear except for black stigma; legs black
Range
concentrated mainly around the Great Lakes and in a broad band running diagonally from Tennessee to Manitoba; scattered locations east to the Atlantic; range boundaries: Quebec and Maine to North Carolina, west to Iowa and South Dakota, north to western Manitoba
Habitat
sandy areas along rivers and streams
Season
June to August
See Also
Plains Clubtail (Gomphus externus) has large yellow spot on top of abdominal segment 9 (that area is entirely black in Midland Clubtail)
Internet References
live adult images plus description, flight season, habitat, similar species (Iowa Odonata Survey)
live adult image by Nick Donnelly (U. of Massachusetts)
live adult image by David Westover (U. of Michigan)
live adult image by Paul Pratt (Regional Lists of Ontario Odonata)
live adult images by Ann Johnson (Dragonflies & Damselflies of New Jersey)
male and female images by David Westover (Odonata of Ohio)