See text The Adelgidae[1] are a small family of the Hemiptera closely related to the aphids, and often included in the Aphidoidea with the Phylloxeridae or placed within the superfamily Phylloxeroidea as a sister of the Aphidoidea within the infraorder Aphidomorpha.

[2] There is still considerable debate as to the number of genera within the family, and the classification is still unstable and inconsistent among competing authors.

[6] Adelgids only lay eggs, and never give birth to live nymphs as aphids do.

A complete adelgid life cycle lasts two years.

[7] Rain can kill adelgids by dislodging eggs and sistentes from trees.