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Species Page - Digrammia curvata
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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 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.

quick link
http://entomology.museums.ualberta.ca/searching_species_details.php?s=4606



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References (1)
Specimen Info
There are 16 specimens of this species in the online database
Map Distribution
Adult Seasonal Distributioncreate a collection histogram with specimens
Specimen List (16)
Related Links
Moth Photographers Group

 

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