Milkweed Bug vs Essex Skipper

Side-by-side species comparison

Attribute Milkweed Bug Essex Skipper
Scientific Name Oncopeltus fasciatus Thymelicus lineola
Order Hemiptera Lepidoptera
Family Lygaeidae Hesperiidae
Size 10-13 mm 26-30 mm wingspan
Habitat Grasslands Grasslands
Diet Seed Feeders Omnivores
Regions North America, Central America Europe, western Asia (introduced to North America)
Conservation Least Concern Least Concern

Milkweed Bug

A medium-sized bug with bold orange-red and black warning coloration. It feeds on milkweed seeds and sequesters toxic cardiac glycosides for its own defense.

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Did You Know?

This bug has become a widely used laboratory model organism because it is easy to rear, has no diapause requirement, and displays clear warning coloration.

Essex Skipper

A small orange-brown skipper so similar to the small skipper that it was not recognised as a separate British species until 1889. The undersides of its antenna tips are black, not orange.

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Did You Know?

It was overlooked in Britain for over a century because it was confused with the nearly identical small skipper.