CDFA Pest Prevention Plant Regulation Practice Exam

When does the Colorado potato beetle inflict damage?

1. Larva only

2. Adult only

3. Pupa only

4. Both larva and adult

The correct answer is: Both larva and adult

The Colorado potato beetle inflicts damage during both its larval and adult stages. Typically, the larvae are notorious for feeding voraciously on potato plants, but adults also cause significant harm. Adult beetles feed on leaves, leading to defoliation which can severely impact the plant's ability to photosynthesize and produce tubers. In the larval stage, the beetles consume large amounts of foliage as well, compounding the damage since multiple larvae can feed on a single plant, leading to rapid and extensive destruction. This dual-stage feeding behavior makes it essential for pest management strategies to address both life stages in order to effectively control Colorado potato beetle populations and minimize their impact on crops. Understanding this aspect is crucial for horticulturists and agricultural professionals as they develop integrated pest management plans that encompass the complete life cycle of this pest.