Adelgidae

Pronunciation

How to pronounce Adelgidae: //əˈdɛl.dʒɪˌdiː//

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Summary

Adelgidae, commonly referred to as adelgids, are a small family of Hemiptera closely related to aphids, primarily associated with coniferous trees. Characterized by their woolly wax covering and absence of tail-like structures, they undergo a complete life cycle (2 years) and lay eggs rather than giving live birth. Some species are devastating pests to forestry.

Physical Characteristics

Covered with dense woolly wax; lack tail-like cauda and cornicles (differentiating factors from aphids).

Identification Tips

Look for woolly white or waxy covering on needles or twigs of conifers.

Habitat

Associated with coniferous trees such as pine and spruce; found on needles, twigs, or galls.

Distribution

Native to the northern hemisphere; some species have been introduced as invasive species in the southern hemisphere.

Diet

Feed on needles, twigs, or galls formed on coniferous hosts.

Life Cycle

Multigenerational life cycles; complete life cycle lasts about two years.

Reproduction

Adelgids only lay eggs; they do not give birth to live nymphs.

Predators

Rain can dislodge and kill eggs and sistentes, serving as a natural control mechanism.

Ecosystem Role

Potential invasive species affecting conifer health; some are considered destructive pests.

Economic Impact

Some of the most destructive introduced pests belong to this group, impacting forestry and landscaping.

Evolution

Part of the infraorder Aphidomorpha, closely related to aphids and often classified within the superfamily Phylloxeroidea.

Similar Taxa

• Aphididae (aphids)
• Phylloxeridae

Misconceptions

Often confused with aphids due to their close relation but distinct in morphology and reproductive habits.

Tags

• Adelgidae
• Hemiptera
• conifer pests
• invasive species
• entomology