Diamondback Moth Parasite vs Japanese Paper Wasp

Side-by-side species comparison

Attribute Diamondback Moth Parasite Japanese Paper Wasp
Scientific Name Diadegma insulare Polistes japonicus
Order Hymenoptera Hymenoptera
Family Braconidae Vespidae
Size 3-5 mm 11-15 mm
Habitat Farmland Gardens
Diet Parasitoids Fruit Feeders
Regions North America, Central America Japan
Conservation Least Concern Least Concern

Diamondback Moth Parasite

A small parasitoid that is the most important natural enemy of the diamondback moth on brassica crops. It lays a single egg inside each host caterpillar.

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Did You Know?

Overuse of insecticides on brassica crops often kills this wasp, ironically leading to worse diamondback moth outbreaks.

Japanese Paper Wasp

A small dark paper wasp endemic to Japan that builds delicate open-comb nests under eaves and tree branches. It is one of the most common social wasps in Japanese gardens.

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Did You Know?

Japanese beekeepers sometimes tolerate these wasps near apiaries because they prey on pest insects rather than honeybees.