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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Butterflies and Moths (Lepidoptera) » Pyralid and Crambid Snout Moths (Pyraloidea) » Crambid Snout Moths (Crambidae) » Acentropinae » Argyractini » Petrophila » Canadian Petrophila - Hodges#4779 (Petrophila canadensis)

Species Petrophila canadensis - Canadian Petrophila - Hodges#4779

Classification · Hodges Number · Synonyms and other taxonomic changes · Size · Identification · Range · Habitat · Season · Food · Life Cycle · See Also · Print References · Internet References · Works Cited

Crambidae: Petrophila canadensis? - Petrophila canadensis

Petrophila bifascialis ? - Petrophila canadensis

Came to light in Lake County, OH (USA) on 8/10/17 around 10 PM. - Petrophila canadensis

Petrophila canadensis - Canadian Petrophila - Hodges#4779 - Petrophila canadensis

Show images of: caterpillars · adults · both

Classification

Kingdom Animalia (Animals)

Phylum Arthropoda (Arthropods)

Subphylum Hexapoda (Hexapods)

Class Insecta (Insects)

Order Lepidoptera (Butterflies and Moths)

Superfamily Pyraloidea (Pyralid and Crambid Snout Moths)

Family Crambidae (Crambid Snout Moths)

Subfamily Acentropinae

Tribe Argyractini

Genus Petrophila

Species canadensis (Canadian Petrophila - Hodges#4779)

Hodges Number

4779

Synonyms and other taxonomic changes

original combination Parargyractis canadensis Munroe, 1972

* phylogenetic sequence # 144100

Size

wingspan 11-18 mm

Identification

Adult: forewing central area lacks triangular arrangement of 3 black spots, present in P. fulicalis; hindwing with two transverse brownish bands (proximal band broad, and distal one thin) separated by white space; trianglular patch of fine black speckling extends at least halfway down from costa of hindwing (may be hidden by overlapping forewing). Fine dark line capping the hindwing eyespots is usually more extensive (nearly complete) over all spots, but this can be a difficult mark to judge since the line wiggles close to the eyespots in the middle.(1)

Range

southern Canada and northeastern United States: west to southeastern Manitoba and North Dakota, south to Tennessee and North Carolina (BG and iNaturalist data). Mapped MPG records in Alberta and Arizona almost certainly refer to other species in this group.(1)

Habitat

larvae live inside underwater retreats (sheets of spun silk) on top of rocks in streams and rivers; adults can be found on nearby riparian vegetation during the day

Season

adults fly from May to September (2 broods)

Food

larvae feed preferentially on diatoms in the genera Navicula and Cymbella that become trapped in their silk sheets, and also scrape algae from rocks in streams and rivers

Life Cycle

larvae are aquatic, developing in riffles of streams and rivers; two generations per year; overwinters as an adult

See Also

Petrophila fulicalis on BG and Moths of Maryland.

Print References

Lavery, Michael A. & Costa, Robert R. 1976. Life History of Parargyractis canadensis Munroe (Lepidoptera: Pyralidae). Amer. Midl. Nat. 96:407-417.

Sexton, C. W., 2021. Identification and Distribution of the Petrophila fulicalis species group (Crambidae): Taking Advantage of Citizen Science Data. J. Lep. Soc. 75(2):113-127.(1)

Internet References

live adult images plus description, foodplants, flight season (Lynn Scott, Ontario) [LINK broken)

Moth Photographers Group

pinned adult image plus flight season (John Glaser, Maryland)

Works Cited

1.	Identification and Distribution of the Petrophila fulicalis species group (Crambidae): Taking Advantage of Citizen Science Data Sexton, C. Journal of the Lepidopterists Society 75(2):113-127.

Contributed by Robin McLeod on 8 February, 2005 - 3:09pm
Additional contributions by Maury Heiman, Chuck Sexton, Randy Hardy
Last updated 20 June, 2021 - 8:12am

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