Entomology Collection TitleImage Bugs Pinned
Species Page - Furcula occidentalis gigans
species list search results ->Furcula occidentalis gigans ->species page

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

scientific name    Furcula occidentalis gigans    

habitat
Deciduous and mixedwood forest and shrubland.

seasonality
Adults are on the wing late April through July, depending on elevation or latitude.

identification
A medium-size pale grey moth with a dark band and lines crossing the forewing. Very similar to and often mixed in collections with Furcula scolopendrina and F. modesta. The light areas of the forewing are pale pearl grey in occidentalis (white in scolopendrina and pale tan in modesta), and the series of fine, parallel zig-zag lines crossing the outer half of the forewing are sharper and more complete in occidentalis, but usually blurred or incomplete in scolopendrina. Specimens from the foothills and mountains may have to be dissected for positive determination. The male of occidentalis has a much shorter, stouter tip to the uncus than scolopendrina does. Both sexes are similar, but the females are larger and broader-winged, and with filiform antennae (bipectinate in males). Specimens from the mountains are larger and darker, and have been named subspecies gigans.

life history
The adults are nocturnal and come to light. There appears to be but a single brood, which overwinters as pupae. The larvae are solitary defoliators.

conservation
A widespread and fairly common insect; no concerns.

diet info
No Alberta data. Available. Elsewhere willows (Salix) and poplars (Populus), with willows reported to be the preferred host.

range
Subspecies gigans is a larger subspecies ocurring in the foothills and mountains of western Canada.

quick link
http://entomology.museums.ualberta.ca/searching_species_details.php?s=913



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)
Validation:

CLICK TO ENLARGE
Related Species Info
Display Hierarchy
Specimen Info
There are 20 specimens of this species in the online database
Map Distribution
Adult Seasonal Distributioncreate a collection histogram with specimens
Specimen List (20)

 

Logo Department of Museums and Collections ServicesLogo University of Alberta