Jack Pine Sawfly vs Pine False Webworm

Side-by-side species comparison

Attribute Jack Pine Sawfly Pine False Webworm
Scientific Name Neodiprion pratti banksianae Acantholyda erythrocephala
Order Hymenoptera Hymenoptera
Family Diprionidae Pamphiliidae
Size 6-8 mm (adult) 10-15 mm (adult)
Habitat Ponds & Lakes Farmland
Diet Omnivores Omnivores
Regions North America Europe, North America
Conservation Not Evaluated Not Evaluated

Jack Pine Sawfly

A serious defoliator of jack pine in the Great Lakes region. Periodic outbreaks can strip thousands of hectares of jack pine.

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Did You Know?

Outbreaks are often triggered by several consecutive years of warm, dry spring weather.

Pine False Webworm

An invasive European sawfly that defoliates pines in North America. Unlike typical sawflies, larvae are solitary and spin silk tubes on branches.

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Did You Know?

Larvae feed inside silken tubes spun among the needles, unlike the gregarious feeding of most pine sawflies.