Habitat
Adults: terrestrial
Immatures: terrestrial

Feeding Habits
Adults: phytophagous
Immatures: phytophagous

North American
Species: 840

Hymenoptera Tenthredinidae
Common sawflies

Special Characteristics: The adults are small to medium wasp-like sawflies, usually black with a colour pattern of green, brown, yellow, red or white. The two sexes are differently coloured in many species. They can be distinguished from other sawflies by the number of antennal segments, between 7 and 11.

Comments: The larvae are external feeders on foliage of various trees and shrubs, some are borers in twigs and fruit, some are gall-makers and a few are leaf miners. Some species are very destructive causing extensive defoliation of trees.

Species:
Pristiphora erichsonii (Hardy)

Common Name:
Larch sawfly

Feeding Habits: This species is a destructive pest of larch. Larvae may cause extensive defoliation over large areas when their population increases.

Distribution:
Widespread in Canada