The smallest fly is the which type?

• A. Fruit fly
• B. Humpbacked
• C. Housefly
• D. Midge

Answer: (B)

Think about size and distinctive shape. Humpbacked flies, which belong to the scuttle/Phoridae group, are typically very small and have a noticeable hump on the thorax. That compact, hump-like body makes them smaller on average than the other types listed. Fruit flies are small too, but usually a bit larger than many humpbacked flies. Houseflies are clearly larger, and midges, while small, are often a bit bigger than the tiniest humpbacked flies in common pest scenarios. So the smallest among these options is the humpbacked fly.