CDFA Pest Prevention Plant Regulation Practice Exam

To which order does the citrus black fly belong?

1. Hymenoptera

2. Coleoptera

3. Homoptera

4. Lepidoptera

The correct answer is: Homoptera

The citrus black fly belongs to the order Homoptera, which is characterized by its members having specialized mouthparts adapted for piercing and sucking plant fluids. Homoptera includes several well-known pests that affect agricultural crops, particularly those that feed on plant sap, such as aphids, leafhoppers, and scales. The traits of Homoptera make it a relevant order when discussing insects that impact citrus and other plants, especially because many of its members can cause significant harm to crops by feeding on them and transmitting plant diseases. The other options listed do not fit the characteristics of the citrus black fly. Hymenoptera includes wasps, bees, and ants, which are generally not associated with sap-sucking behavior. Coleoptera, which refers to beetles, typically have a different feeding mechanism and life cycle. Lepidoptera encompasses moths and butterflies, which are known for their distinctive wings and life stages as caterpillars rather than sap-feeding habits. Thus, recognizing the specific traits of Homoptera is key to understanding why this order is the correct classification for the citrus black fly.