Entomology Collection TitleImage Bugs Pinned
Species Page - Satyrium sylvinus
species list search results ->Satyrium sylvinus ->species page

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

scientific name    Satyrium sylvinus    

common name     Sylvan Hairstreak

habitat
Middle Kootenay Pass in Alberta. Elsewhere, willow thickets, open woodlands, streams and oases.

seasonality
Adults fly in early August. In British Columbia, adults fly from late June to mid-August.

identification
This small (25-35 mm wingspan) hairstreak may or may not have tails (Opler et al.; 1995). The colouration of the wings is similar to other hairstreaks in the province, particularly Satyrium acadicum: dorsal wings are grey-brown or reddish with blue sheen and females have a yellowish tinge. The ventral wings are lighter brown and may even be pale grey to white. There is an orange submarginal patch on the ventral hindwing adjacent to the blue spot. However, the extent of the orange areas is smaller in S. sylvinum than in other hairstreaks. There is no orange submarginal spot on the ventral forewing and no orange cap on the blue spot on the ventral hindwing. There is also a postmarginal band of small black dots; some individuals may have only a few spots. Eggs are not described. Larvae are pale green they also have a thin dorsal line that is dark green or white (Layberry et al.; 1998; Opler & Wright; 1999). Pupae are dark brown (Guppy & Shepard, 2001).

life history
Unknown in Alberta. Eggs overwinter in British Columbia (Guppy & Shepard, 2001). Larvae complete development in the spring and feed on willow leaves (Guppy & Shepard, 2001). Males perch on low vegetation near host plants to watch for females (Opler et al., 1995). Eggs are laid singly on stems of host plants (Opler et al., 1995).

conservation
Rare; provincial rank S1and "Status Undetermined" because of few records.

diet info
Unknown for Alberta, although willow (Salix spp.) have been identified as host plants in the neighbouring province: British Columbia (Guppy & Shepard, 2001). Adults feed on flower nectar (Opler et al., 1995): milkweeds in the United States (Opler & Wright, 1999) and Kondla (2001) documented a nectar feeding event on spreading dogbane (Apocynum androsaemifolium) in Alberta.

range
In Canada, it occurs in Alberta and British Columbia (Layberry et al., 1998). Its range extends southeast to Wyoming, Colorado, New Mexico and south through California to Baja California Norte (Opler et al., 1995).

quick link
http://entomology.museums.ualberta.ca/searching_species_details.php?s=2004



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
Authorship
Display Hierarchy
References (9)
Specimen Info
There are 6 specimens of this species in the online database
Map Distribution
Adult Seasonal Distributioncreate a collection histogram with specimens
Specimen List (6)

 

Logo Department of Museums and Collections ServicesLogo University of Alberta