Species Details

Digrammia curvata

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

Common NameShaded Granite SeasonalityOn the wing from June to August (McGuffin 1972). IdentificationA medium-sized, light grey geometrid with bold AM and PM lines on the forewing (remnants of these at the hindwing anal angle), and checkered wing fringes. Median band fainter, black discal spots prominent. Very similar to D. setonata, and can be reliably distinguished only by dissection (see McGuffin 1972). Habitat should separate the two most of the time in Alberta, with setonata only in the Crowsnest Pass region, and curvata in the southern prairies.

Scientific Name Digrammia curvata Common Name Shaded Granite Habitat Arid grasslands and badlands with rabbitbrush (Chrysothamnus). Seasonality On the wing from June to August (McGuffin 1972). Identification
A medium-sized, light grey geometrid with bold AM and PM lines on the forewing (remnants of these at the hindwing anal angle), and checkered wing fringes. Median band fainter, black discal spots prominent. Very…
A medium-sized, light grey geometrid with bold AM and PM lines on the forewing (remnants of these at the hindwing anal angle), and checkered wing fringes. Median band fainter, black discal spots prominent. Very similar to D. setonata, and can be reliably distinguished only by dissection (see McGuffin 1972). Habitat should separate the two most of the time in Alberta, with setonata only in the Crowsnest Pass region, and curvata in the southern prairies.
Life History Poorly known. McGuffin (1972) describes the immatures in detail. Adults come to light. Conservation No reasons for concern. Diet Info Larvae feed on rabbitbrush (Chrysothamnus) (McGuffin 1972). Range Southern Alberta and BC, south to NV and CO. In Alberta found north to Hanna.

Citation

Page Citation for Digrammia curvata

Page Citation

"Digrammia curvata, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-4606. Accessed 19 Sep. 2021.

Taxonomic Hierarchy

Kingdom Animalia Phylum Arthropoda Class Hexapoda Subclass Insecta Order Lepidoptera Suborder Ditrysia Superfamily Geometroidea Family Geometridae Subfamily Ennominae Tribe Semiothisini Genus Digrammia Species Digrammia curvata
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