Coquillettidia perturbans is characterized by which larval habitat trait?

• A. Larvae develop in rafts on water surface
• B. Larvae attach to roots and stems of aquatic plants for oxygen; remain submerged
• C. Adults are attracted to light traps and feed only at night
• D. It is never a vector for EEE or WNV

Answer: (B)

This question is about how the larvae of this species obtain oxygen and where they live during development. Coquillettidia perturbans has larvae that attach to the roots and stems of aquatic plants to access oxygen, and they stay submerged underwater rather than floating on the surface. This plant-attached, submerged habit is a distinctive breeding pattern that affects how you look for them and how you control them—you’ll want to sample around aquatic vegetation and target treatments near the vegetation rather than focusing on surface habitats alone. The other statements describe adult behavior or disease-vector status, which do not describe the larval habitat.