Gomphurus vastus
(Walsh, 1862)
cobra clubtail
A medium-sized clubtail of eastern North American rivers. perch prominently on vegetation or rocks near water, often with wings spread flat. The completes its in flowing water , with nymphs developing in river substrates.
Pronunciation
How to pronounce Gomphurus vastus: /ˈɡɒmfjʊrəs ˈvæstəs/
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Images
Habitat
Flowing rivers and streams with moderate current; associated with riverine corridors and adjacent riparian vegetation. perch on trees, rocks, and other surfaces near water.
Distribution
Eastern United States; records include West Virginia and Vermont.
Diet
capture flying insects including butterflies and . Nymphs prey on aquatic including mosquito larvae.
Life Cycle
Nymphs develop underwater in river substrates; emerge by climbing vegetation to shed . Overwinters as nymphs in aquatic stage.
Behavior
rest with wings widespread on perches near hunting grounds. Aerial hunting occurs over water and adjacent areas. Prey consumed while perched on vegetation or stones.
Ecological Role
in aquatic and terrestrial ; nymphs contribute to regulation of mosquito .