Yellow-legged Ophion vs Four-toothed Mason Wasp

Side-by-side species comparison

Attribute Yellow-legged Ophion Four-toothed Mason Wasp
Scientific Name Ophion scutellaris Monobia quadridens
Order Hymenoptera Hymenoptera
Family Ichneumonidae Vespidae
Size 15-20 mm 16-19 mm
Habitat Underground Woodlands
Diet Parasitoids Nectar Feeders
Regions Europe Eastern North America
Conservation Least Concern Least Concern

Yellow-legged Ophion

A large orange-brown ichneumon wasp commonly attracted to light at night. Parasitizes large moth caterpillars. Has a laterally compressed, blade-like abdomen.

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Did You Know?

One of the most commonly reported ichneumon wasps in houses, drawn to lights on summer evenings.

Four-toothed Mason Wasp

A solitary black and white mason wasp that nests in hollow stems and old carpenter bee tunnels. It provisions cells with paralyzed moth caterpillars.

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Did You Know?

It divides its nest tunnel into multiple cells using mud partitions, each containing one egg.