Which beetle is described as having straight, in-row pits on the elytra?

• A. Beetle with round pits on the elytra
• B. Beetle with irregular pits on the elytra
• C. Beetle with straight, in-row pits on the elytra
• D. Beetle with no pits on the elytra

Answer: (C)

Patterns of pits on the elytra are a practical clue for identifying beetles. When the pits are arranged in straight, evenly spaced lines along the length of the elytra, they form orderly rows that align with the elytral striae. This neat, in-row arrangement is a distinctive description that matches a beetle whose surface punctation is organized rather than scattered or absent. That clarity of pattern is what makes this option the best choice.

If the pits were round and scattered, or arranged irregularly, or if there were no pits at all, those descriptions describe less orderly patterns that don't match the precise, linear row arrangement used in typical identification keys.