Lunate Ichneumon vs Flower Wasp

Side-by-side species comparison

Attribute Lunate Ichneumon Flower Wasp
Scientific Name Megarhyssa greenei Cerceris rybyensis
Order Hymenoptera Hymenoptera
Family Ichneumonidae Crabronidae
Size 25-40 mm body, ovipositor up to 80 mm 8-14 mm
Habitat Woodlands Heathland
Diet Parasitoids Predators
Regions North America Europe
Conservation Least Concern Least Concern

Lunate Ichneumon

A reddish-brown parasitoid wasp native to North America. It targets horntail larvae in hardwood trees and uses its long ovipositor to reach them.

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Did You Know?

It is the smallest of the three North American Megarhyssa species but still impressively large.

Flower Wasp

A solitary wasp that hunts small mining bees to provision its nest. Nests in sandy soil, often in dense aggregations. Distinguished from other wasps by its hunting specialization.

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Did You Know?

Specializes in hunting mining bees (Andrena), catching them on flowers and carrying them back to its burrow.