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Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hemiptera
Suborder: Sternorrhyncha
Superfamily: Aphidoidea

Aphids are small bugs that feed on plants. Aphids cause more plant damage than any other insects[source?]. There are about 4,000 different species of aphids.

Around 250 species are serious pests for agriculture and forestry as well as an annoyance for gardeners. They vary in size from 1-10 mm long.

Important natural enemies include the predatory lady beetles (Coleoptera: Coccinellidae), hoverfly larvae lacewings (Neuroptera and insect-eating fungi like Lecanicillium lecanii.

Aphids are found many places on earth. Aphids are most common in temperate zones. Aphids can travel far in the air. For example, the lettuce aphid spread from New Zealand to Tasmania.[1] They have also been spread by human transportation of infested plant materials.

Aphid in Baltic amber


  1. "Landline: Scientist battles lettuce aphid.". Australian Broadcasting Corp. 30 October, 2005. Retrieved 1 January 2007.