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Species Petrophila confusalis - Confusing Petrophila - Hodges#4780

Petrophila - Petrophila confusalis Petrophila confusalis small tan and white moth - Petrophila confusalis Confusing Petrophila Moth - Petrophila confusalis Petrophila confusalis Petrophila confusalis? - Petrophila confusalis Petrophila confusalis Confusing Petrophila - Petrophila confusalis
Show images of: caterpillars · adults · both
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 confusalis (Confusing Petrophila - Hodges#4780)
Hodges Number
Synonyms and other taxonomic changes
Petrophila confusalis (Walker, 1866)
Cataclysta confusalis Walker, 1866 (1)
Elophila truckeealis Dyar, 1917
15 species in the genus for North America north of Mexico.(2)
forewing length 5-11 mm.
Adults have considerable size variation.(2)
California to southern British Columbia and east to Nevada, Idaho, and Montana.(3)
Previous descriptions of the range which included eastern North America are in error and are based on the name confusalis being "applied vaguely to one or another of the eastern species".(3) Powell and Opler's statement that the species was described from "eastern" North America seems to be in error.(2) The type locality in Walker's description is just "North America".(1)
Larvae feed on algae on rocks in fast moving streams. See "An introduction to the aquatic insects of North America" in internet references below)
Life Cycle
Adult females enter the water, up to 4 meters deep, to oviposit (200 - 300 eggs), carrying a plastronlike layer of air as a source of oxygen that sustains them from 4 to 12 hours. After ovipositing they die in the water. Some females only submerge partially, without fully breaking the water tension, and deposit eggs shallowly over several days. (2)
Print References
Dyar, H. G. 1917: Notes on North American Nymphulinae (Lepidoptera, Pyralidae). – Insecutor Inscitiae Menstruus, Washington 5 (4–6): 76.
Powell, J. A. & P. A. Opler, Moths of Western North America, pl. 23.48m; p. 180.(2)
Walker, F. 1865. List of specimens of Lepidopterous insects in the the collection of the British Museum. Part 34:1334 (1)
Internet References
Moth Photographers Group - range map, photos of living and pinned adults.
Moth Photographers Group - photograph of pinned adult and related species for comparison.
Works Cited
1.List of the Specimens of Lepidopterous Insects in the Collection of the British Museum
F. Walker. 1865. Vol 33-34.
2.Moths of Western North America
Powell and Opler. 2009. UC Press.
3.The Moths of North America North of Mexico. Fascicle 13.1A. Scopariinae, Nymphulinae
Eugene Munroe. 1972. The Wedge Entomological Research Foundation.