Which feature is typical of Cicadellidae (leafhoppers)?

• A. Comb-like rows of large spines along hind tibia
• B. Long, whip-like antennae
• C. Wings with uniform color
• D. Prothorax extended forward

Answer: (A)

Leafhoppers are distinguished by their hind legs built for powerful jumping, and a hallmark feature is the comb-like rows of large spines along the hind tibia. Those spines, arranged in parallel rows, give the leg a serrated, comb-like appearance and help the insect grip onto plant surfaces as it pushes off to leap. This trait is a reliable identifying character for Cicadellidae and sets them apart from many other plant-feeding groups.

The other options aren’t as diagnostic. Antennae that are long and whip-like aren’t a defining feature of leafhoppers and can be seen in many other insects. Wings that are uniformly colored are not universal among leafhoppers, which can show varied wing patterns. A prothorax extended forward isn’t a characteristic trait used to identify this family and is not distinctive for them.