Large-legged Chalcid vs Buck Moth

Side-by-side species comparison

Attribute Large-legged Chalcid Buck Moth
Scientific Name Chalcis myrifex Hemileuca maia
Order Hymenoptera Lepidoptera
Family Chalcididae Saturniidae
Size 4-7 mm 50-75 mm wingspan
Habitat Heathland Heathland
Diet Parasitoids Omnivores
Regions North America Eastern North America
Conservation Not Evaluated Least Concern

Large-legged Chalcid

A parasitoid wasp with conspicuously thickened hind femora used to brace itself while ovipositing. It attacks the pupae of tachinid flies and various Lepidoptera.

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Did You Know?

Despite looking like it could jump powerfully, those thick hind legs are mainly used for gripping, not leaping.

Buck Moth

A day-flying black and white moth with a red-tipped abdomen that appears in autumn. Its spiny caterpillar delivers a painful venomous sting that causes welts and swelling.

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Did You Know?

In New Orleans, falling caterpillars are a seasonal hazard, prompting public health warnings each spring.