Species Details

Oligocentria semirufescens

University of Alberta E.H. Strickland Entomological Museum Read more about this collection »

Common NameRusty Prominent, Red-washed Prominent. SeasonalityAdults on the wing June through early August. IdentificationA medium-size (3.0-4.5 cm. wingspan) pale grey moth, slightly reddish or pinkish grey on the lower half of the forewing. The hindwing is whitish with some darkening along the outer veins and at the anal angle. The leading half of the forewing is light grey, with a large diffuse dark grey blotch at the disk, usually containing a small black discal dot. The pale grey area along the costa near the apex is not well defined as it is in Schizura leptinoides and extends further along the costa toward the base. The most prominent markings are the dark scaling on the forewing base which also extends part way along the inner margin (lacking in leptinoides) and the prominent dark grey blotch at the disc. Normal lines are absent or nearly so. Antennae are pectinate to beyond the midpoint, then simple. Both sexes are similar. The genitalia and the 8th sternite differ greatly from those of Schizura leptinoides. Western populations of semirufescens are paler and greyer than those from eastern Canada, and superficially resemble the southern O. perangulata. In Alberta, semirufescens is likely to be confused only with Schizura leptinoides.

Scientific Name Oligocentria semirufescens Common Name Rusty Prominent, Red-washed Prominent. Habitat Deciduous and mixedwood forest and shrublands. Seasonality Adults on the wing June through early August. Identification
A medium-size (3.0-4.5 cm. wingspan) pale grey moth, slightly reddish or pinkish grey on the lower half of the forewing. The hindwing is whitish with some darkening along the outer veins and at the anal angle. The…
A medium-size (3.0-4.5 cm. wingspan) pale grey moth, slightly reddish or pinkish grey on the lower half of the forewing. The hindwing is whitish with some darkening along the outer veins and at the anal angle. The leading half of the forewing is light grey, with a large diffuse dark grey blotch at the disk, usually containing a small black discal dot. The pale grey area along the costa near the apex is not well defined as it is in Schizura leptinoides and extends further along the costa toward the base. The most prominent markings are the dark scaling on the forewing base which also extends part way along the inner margin (lacking in leptinoides) and the prominent dark grey blotch at the disc. Normal lines are absent or nearly so. Antennae are pectinate to beyond the midpoint, then simple. Both sexes are similar. The genitalia and the 8th sternite differ greatly from those of Schizura leptinoides. Western populations of semirufescens are paler and greyer than those from eastern Canada, and superficially resemble the southern O. perangulata. In Alberta, semirufescens is likely to be confused only with Schizura leptinoides.
Life History No information available. Conservation A widespread, polyphagus insect. No concerns. Diet Info No Alberta data. Elsewhere, a wide variety of deciduous trees and shrubs. Range Nova Scotia west to Vancouver Island; south to Florida, Colorado and central California. In Alberta, found across the southern boreal forest and parklands.

Citation

Page Citation for Oligocentria semirufescens

Page Citation

"Oligocentria semirufescens, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-418. Accessed 19 Sep. 2021.

Taxonomic Hierarchy

Kingdom Animalia Phylum Arthropoda Class Hexapoda Subclass Insecta Order Lepidoptera Suborder Ditrysia Superfamily Noctuoidea Family Notodontidae Genus Oligocentria Species Oligocentria semirufescens
This hierarchy is created from our museum records, it may not always accurately reflect modern taxonomies.

Taxonomic Hierarchy for University of Alberta E.H. Strickland Entomological Museum