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TaxonomyBrowse
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Genus Phanogomphus

Pronghorn Clubtail, Gomphus  graslinellus - Phanogomphus graslinellus Gomphus kurilis? - Phanogomphus kurilis - male - female Pacific Clubtail - Gomphus kurilis - Phanogomphus kurilis - male Gomphus - Phanogomphus borealis - female dragonfly - Phanogomphus militaris - male Ashy clubtail? (DDF771a and b) - Phanogomphus exilis Gomphus descriptus - Phanogomphus descriptus - male Dusky Clubtail ? - Phanogomphus borealis
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 Phanogomphus
Identification
I. Phanogomphus
The 17 members of this subgenus are medium-sized, slender, and have small to moderate-sized clubs (S8 & S9) in males, barely present in females. All species have yellow patches on the club and yellow dorsal markings on most of the abdominal segments. All have brownish thoraces with two yellow lateral stripes. The shape and extent of the dorsal markings combined with the shape of the terminalia in males are the most reliable characteristics for identification. The restricted distribution of some species may help in their identification. All species are illustrated on Plates 7 and 8 in Dunkle (1).

The six widespread eastern species of these Clubtails (Ashy, Beaverpond, Dusky, Harpoon, Lancet, Rapids) are not always identifiable from photographs. Clear dorsal and lateral photos of a specimen, and dorsal and lateral close-up views of male terminalia would be a significant contribution to BugGuide. Nikula (2) illustrates the terminalia of all six widespread eastern species.
Range
throughout North America except dry areas in the west
Internet References
Slender Clubtail ID A great web site that compares the various field marks on the six most common species in this group.
Works Cited
1.Dragonflies Through Binoculars: A Field Guide to Dragonflies of North America
Sidney W. Dunkle. 2000. Oxford Press.
2.Field Guide to the Dragonflies and Damselflies of Massachusetts
Blair Nikula, Jennifer L. Loose, Matthew R. Burne. 2003. Massachusetts Division of Fisheries & Wildlife.