The adult female spongy moth (Lymantria dispar) has a wingspan of up to 6 cm; the wings are white in colour with a few black wavy lines or flecks.
The buff-coloured egg masses are 3 to 6 cm long and 2 to 3 cm wide and resemble pieces of chamois leather.
Spongy moth caterpillars feed on the foliage of most trees and are among the most serious pests of deciduous species.
What You Can Do
Report any suspected sightings in Edmonton to 311.
Female spongy moths and egg masses.