Alfalfa Caterpillar Parasite vs Green Lacewing

Side-by-side species comparison

Attribute Alfalfa Caterpillar Parasite Green Lacewing
Scientific Name Cotesia medicaginis Chrysoperla carnea
Order Hymenoptera Neuroptera
Family Braconidae Chrysopidae
Size 2-4 mm 12-20 mm body, 30 mm wingspan
Habitat Farmland Farmland
Diet Parasitoids Predators
Regions North America Worldwide
Conservation Least Concern Least Concern

Alfalfa Caterpillar Parasite

A small braconid wasp that parasitizes alfalfa butterfly caterpillars in agricultural fields. Larvae spin white cocoons after emerging from the host.

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Did You Know?

It can reduce alfalfa caterpillar populations by over 50% in some fields without any pesticide use.

Green Lacewing

Delicate green insects with lace-like wings and golden eyes. Larvae are ferocious predators nicknamed "aphid lions." Widely used in biological pest control.

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Did You Know?

Lacewing larvae are such effective predators they are nicknamed "aphid lions" — a single larva can devour 200 aphids per week during its development.