Length: typically 5-6 mm
In the subgenus Rhipidia, males have bipectinate antennae, while the antennae of the females are not pectinate.
Limonia (Rhipidia) duplicata ranges from New England south to Alabama and Florida. This is a common species in West Virginia and there are two generations per year (you may notice the adults are missing in midsummer).
The larvae don't live in bodies of water, but in damp places like around streamside rocks, algae in seeps, and under the bark of rotting trees.
Insects of West Virginia