Adults: Tiny (3-5 mm) and moth-like in appearance; body and wings gray/brown and hairy (setae); antennae with dense setae, each segment with distinctive whorls; wings pointed, with some white spots, and usually held parallel to substrate when at rest.
Head: Antennae with dense setae, each segment with distinctive whorls
Wing: Wings pointed, with some white spots, and usually held parallel to substrate; R complete (five branches: R1 + four branches of Rs) and anal region reduced.
Larva: Eucephalic, vermiform and amphipneustic; body secondarily annulated, with dorsal sclerotized plates and with abundant setae; poterior spiracles at end of small, cone-shaped siphon.
Length: 3-5 mm
Larvae are found in aquatic/semi-aquatic habitats, where they feed on decaying matter and microorganisms. Larvae are commonly found in bathroom drains and pipes where organic materials build up. Adults are seen flying/hopping on bathroom walls or are attracted to lights. Adults do not feed.