Science Olympiad Entomology Practice Exam

Which family is known for leaf-like expansions on the metatibiae?

Tingidae Coreidae Gerridae Cimicidae

Correct Answer:

Coreidae

Explanation:

Leaf-like expansions on the hind legs are a hallmark of Coreidae, the leaf-footed bugs. In this family, the metatibiae often broaden into flattened, leaf-shaped lobes, which helps camouflage the insect among leaves and can aid in balance as it moves through vegetation. This distinctive leg modification distinguishes them from the other groups: Tingidae have lace-like, heavily sculptured wings; Gerridae are streamlined for skimming on water; Cimicidae are small, flattened, wingless bed bugs. So, the presence of leaf-like hind tibiae points to Coreidae.

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