Texas Future Farmers of America (FFA) Entomology Career Development Events (CDE) Practice Exam

The correct answer is the damselfly. This type of insect is known for its role in the ecosystem as a predator of other insects, particularly pests. Damselflies have chewing mouthparts, which they use to capture and consume small insects, including mosquitoes. This predatory behavior helps to control pest populations, making them beneficial for both agricultural and natural environments.

While cigarette beetles, darkling beetles, and crane flies may also be part of the ecological community, they do not share the same beneficial characteristics. Cigarette beetles are typically considered pests as they feed on stored tobacco and other products. Darkling beetles are often seen in various environments but do not have the same level of positive impact on pest management as damselflies. Crane flies, although not harmful, do not contribute to pest control in the same way and are often misidentified as mosquitoes. The damselfly's role as a predator is key to its classification as a beneficial insect.