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

Species Phanogomphus spicatus - Dusky Clubtail

Dusky Clubtail in New Brunswick - Phanogomphus spicatus - male Dusky Clubtail - Phanogomphus spicatus - female Anisoptera, Gomphus; Female - Phanogomphus spicatus - female Anisoptera, Gomphus; Female - Phanogomphus spicatus - female Gomphus  - Phanogomphus spicatus - female Dusky Clubtail - Phanogomphus spicatus - female Dusky clubtail - Phanogomphus spicatus - male Dusky clubtail - Phanogomphus spicatus - 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 Phanogomphus
Species spicatus (Dusky Clubtail)
Synonyms and other taxonomic changes
A member of the Sub-genus Phanogomphus, see here for discussion
Identification
A medium-sized clubtail with dull colouration. Mostly brown with dull yellow makings, except that when recently emerged the yellows are a lot brighter. Dorsally, abdomen has an almost contiguous yellow stripe on S1-S7, each component being dagger-shaped (wide anteriorly and narrowing to a point posteriorly). On S8 there is an anterior yellow triangle. S9 usually dark, S10 yellow dorsally. No club. Eyes blue/gray.
Laterally, thorax has 2 broad yellow stripes that expand posteriorly (dorsally). Dull yellow markings on abdomen except that S9 has large yellow patch.
One of the earlist Gomphus spp to emerge.
Similar to the other species in the Subgenus and possibly impossible to separate from Ashy Clubtail in the field where the 2 species are sympatric. Both are eastern but Dusky is absent from the south and ranges further north. Ashy not yet found in NB so ID of Dusky here is not so difficult. Positive identification can be made by examining terminalia of males and subgenital plate of females.
The Images page has dorsal and lateral views of both sexes and photos of male terminalia and female subgenital plate
Range
Eastern NA, NB to NC and east to western Ontario
Habitat
A species of lentic habitats that helps in separating it from the similar Harpoon Clubtail that prefers clear, rapid streams with silt-bottomed pools.
Season
mid April to late July