Common Name: Bagworm Moth Latin Name:
Dahlica triquetrella (Hübner, 1813)
(R.
Bercha, det.)
Length: ~4mm
Range: Alberta
Habitat: Areas with Lichen
Time of year seen: (Adults) April
to May (Additional Sightings)
Adults's Diet: Non-eating
Other: The Bagworm Moth is
an exotic species imported from Europe. In Canada it was first
recorded in 1941 at Vernon, BC. Since that time it has spread and by
the mid 1990's was present in Alberta. The caterpillars are commonly
seen in the fall and spring on the sides of builds as they climb up looking
for protected places to over winter or pupate. They are also found on
trees with lichen. In the springtime the caterpillars pupate and the
parthenogenic wingless female adults emerge to lay eggs before they die
a short time later. The eggs are laid inside of the adults bag, where
they hatch. Upon hatching the young larva create their own bag and
begin foraging for lichen, the bagworm moths food of choice. The silk
bags are triangular in cross section and covered with a variety of fine
materials including silt and shells. |