|scientific name Pero occidentalis |
common name Western Pero
Open montane woodlands.
Adults fly in Alberta throughout June.
Very similar to P. honestaria and behrensaria, but according to McGuffin (1987) this is the only Canadian Pero with slightly dentate or pectinate rather than simple male antennae.
Caterpillars are light grey and brown with several short tubercles, and mimic twigs in posture and colouration. The pupa overwinters. The eggs are laid in a neat row along the host foliage, as in other Pero species (McGuffin 1987).
Not of concern.
Miller & Hamond (2000) state that larvae feed primarily on pines and other conifers, But this species was not recorded from conifers by Prentice (1963), and McGuffin (9187) lists only lodgepole pine (Pinus contorta) along with deciduous shrubs (Menziesia glabella, Sheperdia canadensis, and Ceanothus).
Southern BC and the AB mountains (south of the Athabasca River) south to CA (McGuffin 1987).
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