Long-tailed Giant Ichneumon vs Japanese Maple Sawfly

Side-by-side species comparison

Attribute Long-tailed Giant Ichneumon Japanese Maple Sawfly
Scientific Name Megarhyssa atrata Megalodontes cephalotes
Order Hymenoptera Hymenoptera
Family Ichneumonidae Pamphiliidae
Size 30-50 mm body, ovipositor up to 130 mm 12-18 mm
Habitat Woodlands Meadows
Diet Wood Feeders Herbivores
Regions North America Southern and Central Europe
Conservation Least Concern Least Concern

Long-tailed Giant Ichneumon

A large dark-bodied ichneumonid wasp found in eastern North America. Females bore through bark to parasitize pigeon tremex horntail larvae.

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Did You Know?

Multiple females often congregate on the same dead tree, drilling simultaneously for hosts.

Japanese Maple Sawfly

A colorful web-spinning sawfly with a large head, bright orange body, and distinctive long antennae. It is associated with umbelliferous plants in southern Europe.

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Did You Know?

Despite its common association with umbellifers, this species belongs to a family mostly known for conifer and broadleaf tree feeders.