Species Details
Digrammia decorata
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
Common NameDecorated Granite
SeasonalityAlberta records are for late May and August, possibly indicating two broods.
IdentificationForewing uniform gray with a bold black AM and PM line and discal spot. Subterminal area shaded dark. Hindwing with faint discal spot and PM line. Very similar to the dark form of M. hebetata, but hebetata lacks the contrasting dark submarginal band distal to the PM line. Decorata also usually has a thin white area bordering the outer margin of the PM line of the hindwing, absent in hebetata.
Scientific Name
Digrammia decorata
Common Name
Decorated Granite
Habitat
Prairie badlands.
Seasonality
Alberta records are for late May and August, possibly indicating two broods.
Identification
Forewing uniform gray with a bold black AM and PM line and discal spot. Subterminal area shaded dark. Hindwing with faint discal spot and PM line. Very similar to the dark form of M. hebetata, but hebetata lacks the…
Forewing uniform gray with a bold black AM and PM line and discal spot. Subterminal area shaded dark. Hindwing with faint discal spot and PM line. Very similar to the dark form of M. hebetata, but hebetata lacks the contrasting dark submarginal band distal to the PM line. Decorata also usually has a thin white area bordering the outer margin of the PM line of the hindwing, absent in hebetata.
Life History
The mature larva is green with paler lines and a yellow lateral stripe (McGuffin 1972). No other life history information is available.
Conservation
No obvious concern.
Diet Info
Larvae feed on willows (Salix spp.) (McGuffin 1972).
Range
Manitoba to BC, south to Utah (McGuffin 1972).
Citation
Page Citation for Digrammia decorata
Page Citation
"Species Details - Digrammia decorata, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-4607. Accessed 21 Dec. 2024.
References
Author
McGuffin, W. C.
Title
Guide to the Geometridae of Canada. II. Subfamily Ennominae. 1.
Publication Date
1972
Series Title
Memoirs of the Entomological Society of Canada
Volume
86
Pages
159
Specimen Information
There are 2 specimens of this Species.
UASM41643 - Digrammia decorata
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Sandy Point Recreation Area
Collected ByAnweiler, G. G.
Date Collected2000-05-19
UASM59865 - Digrammia decorata
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Jenner
Collected ByAnweiler, G. G.
Date Collected2007-05-27