''Petrophila canadensis'', the Canadian petrophila moth, is a moth in the family Crambidae. It was described by

Eugene G. Munroe Eugene Gordon Munroe (8 September 1919 – 31 May 2008) was a Canadian entomologist who discovered numerous species of insects. He worked for the Insect Systematics and Biological Control Unit, Entomology Division in Ottawa, Ontario, Canada. Munro ...

in 1972. It is found in North America, where it has been recorded from southern Canada and the north-eastern United States. Its wingspan is 11–18 mm. Adults are on wing from May to September in two generations per year. The larvae are aquatic and feed on diatoms, including ''

Navicula ''Navicula'' is a genus of boat-shaped diatom algae, comprising over 1,200 species. ''Navicula'' is Latin for "small ship", and also a term in English for a boat-shaped incense-holder. Diatoms — eukaryotic, primarily aquatic, single-cell ...

'' and ''

Cymbella ''Cymbella'' is a diatom genus in the family Cymbellaceae The Cymbellaceae are a diatom family in the order Cymbellales The Cymbellales are a diatom order in the class Bacillariophyceae. They include the following families Family (fro ...

'' species. They have also been recorded feeding

algae Algae (; singular alga ) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular mic ...

. The species overwinters as an adult.

References

Petrophila Moths described in 1972 {{Petrophila-stub