Common Name: Western Yellowjacket Latin Name:
Vespula pensylvanica (Saussure, 1857) (R.
Bercha, det.)
Length: 10 - 15 mm
Range: Throughout Alberta
Habitat:
Various
Time of year seen: Late
March -
October
(Additional Sightings)
Diet: Insects mostly, also nectar and sweet foods.
Other: Vespula pensylvanica (de Saussure, 1857), the western
yellowjacket, is a common species found from Manitoba to British Columbia in
Canada (Buck et al., 2008). The wasps have the typical yellow and black
coloration associated with the name yellowjacket. The diagnostic
characteristic of this species is reported as a complete yellow ring or loop
around the top of each eye (Buck et al., 2008). Subterranean nesting sites
such as rodent burrows are common (MacDonald et al., 1974), but other
nesting sites with dark spaces may be selected; including attics and inter
wall spaces in houses (Buckell and Spencer, 1950) and hollow logs. This
species of yellow jacket is both a predator of other arthropods (Akre et
al., 1981) and a general scavenger (Kimsey and Carpenter, 2012). As such its
foraging can bring it into conflict with humans, resulting in its
designation as a pest species (Akre et al., 1981).
(Bercha, 2016) |