Sawflies

Pest: Sawflies (Caliroa cerasi, Cladius difformis, Cladius difformis, Noediprion spp., Pontania pacifica, Hartigla cresseni)

Pest Type: Insect Pest

Major Identifying Features: Adult females have a sawlike abdominal appendage used for inserting eggs in foliage, adults have to pair of wings that are dark, wasp-like, flat insects, 0.5 inch long or shorter, six or more prolegs on the abdomen, one large eye on each side of the head

Life Cycle: Most sawflies overwinter as eggs in foliage or as pupae in litter, 1 to several generations per year

Pest Rating: Minor to moderate

Management Rating: Easy to difficult

Host/Season/Outbreak Information: Conifers, broadleaf plants

Damage Information: Most conifer sawflies chew on needles or buds which can cause tip dieback, broadleaf species chew holes in leaves, or mine tissue, some species roll leaves, web foliage, or cause plant galls, sawflies in the west can kill plants occasionally

Management Options: Trees and shrubs tolerate some defoliation, mechanical removal of infested and damaged foliage and stems, biological control with parasitic wasps, beetles, or fungal and viral diseases, avoid insecticides

Sources:

http://www.ipm.ucanr.edu

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