Members in this genus are superficially similar to the grass moths (Pyralidae: Crambinae), but these generally have some markings on the forewing, and have conspicuously long palpi. There are several species of leaf-rollers (Tortricidae) that are very similar, but have a pointed forewing apex and are smaller than Crambidia. C. impura is smaller than casta, and is light grey in colour, not white. Their ranges are currently not known to overlap in Alberta.

Quebec west to B.C., south to Arizona.

occurs (regularly, as a native taxon) in multiple nations

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

Dry, open woodlands, especially jack pine and montane forests. Also found in prairie riparian woods.

Lichens.

Peak flight period in August.

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Species: 23
Species With Barcodes: 1

Canada

Rounded National Status Rank: NNR - Unranked

United States

Rounded National Status Rank: NNR - Unranked

Rounded Global Status Rank: G5 - Secure

Comments: Following Lafontaine and Schmidt (2010), the traditional Arctiidae have been transferred to the family Erebidae as a subfamily (Arctiinae), with former subfamilies such as Lithosiinae now treated as tribes. The circumscription of Arctiinae remains virtually identical to recent circumscriptions of Arctiidae, but circumscriptions of some taxa within the Arctiinae have changed.