Small Milkweed Bug vs Cave Cixiid

Side-by-side species comparison

Attribute Small Milkweed Bug Cave Cixiid
Scientific Name Lygaeus kalmii Oliarus polyphemus
Order Hemiptera Hemiptera
Family Lygaeidae Cixiidae
Size 10-12 mm 4-6 mm
Habitat Grasslands Caves
Diet Predators Sap Feeders
Regions North America Hawaii, Big Island
Conservation Least Concern Vulnerable

Small Milkweed Bug

A boldly patterned red-and-black seed bug that feeds on milkweed seeds and sequesters toxic cardiac glycosides. Its warning coloration advertises its chemical defense to predators.

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Did You Know?

It stores milkweed toxins in its body, making it taste terrible to birds and other predators that try to eat it.

Cave Cixiid

A remarkable cave-adapted planthopper from Hawaiian lava tubes that has lost its eyes and wings. Its body is pale and depigmented, adapted to complete darkness.

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Did You Know?

This eyeless cave-dwelling planthopper was one of the first species used to study speciation in cave systems, with different populations in separate lava tubes diverging into distinct species.