Entomology Collection TitleImage Bugs Pinned
Species Page - Thorybes pylades
species list search results ->Thorybes pylades ->species page

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

scientific name    Thorybes pylades    

common name     Northern Cloudywing

Clearings and meadows in pine and aspen woodlands, valley bottoms in the prairies.

Adults are most often encountered in mid to late June. One brood annually.

A relative large skipper (wingspan 28 to 38mm) that is most similar to our duskywing skippers (Erynnis spp.), but the Northern Cloudywing has even, dark brown forewing uppersides, not mottled like the duskywings. The sharply curved-back antennal clubs will also distinguish this species.

life history
The eggs are pale green (Bird et al. 1995), and larvae are dark green with a brownish ventral line and paler lateral lines (Layberry et al. 1998). The mature larvae feed and overwinter in shelters made from the host plant leaves (Layberry et al. 1998). Males exhibit perching behaviour to await females, and will chase off other butterflies entering their territory (McCabe & Post 1977, Acorn 1993).

Not of conservation concern.

diet info
The larval hostplant in Alberta is unrecorded. Elsewhere, this species feeds on various herbaceous legumes such as vetches and clovers (Hooper 1973, Opler 1999). Adults nectar at legume flowers such as vetch, alfalfa (Hooper 1973) and locoweed (McCabe & Post 1977). Adults sip moisture at damp earth (Bird et al. 1995).

Occurs throughout most of temperate North America, north to the Alberta / NWT border. Restricted to watercourses in the drier parts of the Great Plains (Opler 1999).

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 (6)
Specimen Info
There are 37 specimens of this species in the online database
Map Distribution
Adult Seasonal Distributioncreate a collection histogram with specimens
Specimen List (37)


Logo Department of Museums and Collections ServicesLogo University of Alberta