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.

Nova Scotia west to Vancouver Island; south to Florida, Colorado and central California. In Alberta, found across the southern boreal forest and parklands.

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

Deciduous and mixedwood forest and shrublands.

Non-Migrant: No. All populations of this species make significant seasonal migrations.

Locally Migrant: No. No populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).

Locally Migrant: No. No populations of this species make annual migrations of over 200 km.

No Alberta data. Elsewhere, a wide variety of deciduous trees and shrubs.

Adults on the wing June through early August.

The following is a representative barcode sequence, the centroid of all available sequences for this species. 

 
There are 9 barcode sequences available from BOLD and GenBank.  Below is a sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.  See the BOLD taxonomy browser for more complete information about this specimen and other sequences.
 

Download FASTA File

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 7
Species: 46
Species With Barcodes: 1

A widespread, polyphagus insect. No concerns.

Canada

Rounded National Status Rank: NNR - Unranked

United States

Rounded National Status Rank: NNR - Unranked

Rounded Global Status Rank: G5 - Secure