Polyplectropus impluvii is a species of caddisfly belonging to the family Polycentropodidae. The species was first described by Keith Arthur John Wise in 1962, and is endemic to New Zealand.
The species was identified by Wise in 1962, based on a specimen collected by Wise from a domestic water tank in Māngere, South Auckland in 1950.
Wise's original text (the type description) reads as follows:
The species is endemic to New Zealand.