Which of the following features is associated with the Coquillettidia genus?

The Coquillettidia genus is characterized by a blunt abdomen tip, which is a distinctive feature that helps in the identification of these mosquitoes. This trait differentiates Coquillettidia from other mosquito genera, which may have more pointed or tapered abdomen shapes. Understanding such morphological characteristics is essential for proper pest identification and control, particularly in vector management efforts related to human health.

The other features listed, while possibly relevant to other mosquito genera, are not specific or are less pronounced in Coquillettidia. For example, a long proboscis might be notable in other species that feed on larger hosts, while prominent siphons are characteristic of different developmental stages in other mosquito genera. Colorful wing patterns could apply to various mosquito species but do not specifically define the Coquillettidia genus. Recognizing the blunt abdomen tip as a key feature aids in the effective identification of this genus in the field.