Which insect belongs to Psocoptera and mouth parts Sucking?

• A. Hog Louse
• B. Ground Beetle
• C. House Fly
• D. Indian Meal Moth

Answer: (A)

Lice that feed on blood have piercing-sucking mouthparts designed to pierce skin and suck fluids. Hog louse, Haematopinus suis, is a true louse on pigs and uses a sucking-type mouthpart to obtain blood. In many entomology texts, lice are discussed within the broader Psocodea grouping, which is why this insect is linked to Psocoptera in some classifications. The other insects have different mouthparts: a ground beetle chews with strong mandibles, a house fly uses sponging mouthparts to soak up liquids, and an Indian meal moth has a siphoning (proboscis) mouthpart for liquids. So the hog louse best fits both the sucking mouthparts idea and the Psocoptera-related grouping in this context.