The hemlock woolly adelgid belongs to which family according to the material?

• A. Phylloxeridae.
• B. Aphididae.
• C. Adelgidae.
• D. Coccidae.

Answer: (A)

Hemlock woolly adelgid is classified in the family Adelgidae. Adelgids are small, sap-sucking insects that feed on conifers and are closely related to aphids but are placed in their own family because of unique life cycles and characteristics. The woolly, waxy coverings that surround the immature stages are a hallmark of adelgids, which helps distinguish them from other groups.

This pest is Adelges tsugae, specifically associated with hemlocks, which is why it belongs in Adelgidae rather than the other families listed. Phylloxeridae includes pests like grape phylloxera that attack grapevines; Aphididae covers true aphids, which are a different family; Coccidae are soft scales.