Entomology Collection TitleImage Bugs Pinned
Species Page - Syngrapha diasema
Syngrapha diasema ->species page

E-mail this Page   
Print this Page   
Link to this Page   

scientific name    Syngrapha diasema    

Alpine and subalpine shrub meadows.

The Alberta records are all of adults collected in the latter half of July.

A medium-size moth (3.0-3.3 cm wingspan). The forewings are dark grey or grey-brown with the lower half of the median area blackish. There is a thin U-shaped silver stigma with a short projection outward from the bottom of the U. Hindwings are pale buff or yellow-brown with a broad dark terminal band. Very similar to S. borea and S. orophila, but those species have yellow instead of buff or yellow-brown hindwings. There is also often a faint median line in diasema, lacking in similar species. The antennae are simple and both the sexes are similar.

life history
Adults are nocturnal and come to light. There is a single brood per year.

Rarely collected in Alberta, but in secure habitat.

diet info
No Alberta data; elsewhere, Dwarf birch (Betula nana).

Holoarctic. Northern Fennoscandia to Siberia, across Arctic and subarctic. In North America, it has been collected across the arctic and subarctic from Labrador to Central Alaska. It has also been collected on 3 occasions in the subalpine in the Nordegg - Cadomin area of Alberta. These are the only records south of the subarctic.

quick link

Comments (0)Add New Comment

Comments are published according to our submission guidelines. The EH Strickland Entomological Museum does not necessarily endorse the views expressed.

Add New Comment (all fields are required)

Related Species Info
Display Hierarchy
References (2)
Specimen Info
There are 71 specimens of this species in the online database
Map Distribution
Adult Seasonal Distributioncreate a collection histogram with specimens
Specimen List (71)
Related Links
Moth Photographers Group


Logo Department of Museums and Collections ServicesLogo University of Alberta