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Similarly, adelgids or woolly conifer aphids, also feed on plant phloem and are sometimes described as aphids, but are more properly classified as aphid-like insects, because they have no cauda or cornicles.
Aphids are very small insects that live in large colonies and feed on plant sap. Most aphids are specialized to feed on a specific type of plant, although a few species can feed on hundreds of unrelated plants.
24 cze 2008 · What is an aphid? Aphids are small, soft-bodied insects that feed by inserting their slender mouthparts into phloem cells, the food conduits of plants. Most aphid species feed on only one species of plant and closely related aphid species tend to feed on closely related species of plants.
1 gru 2008 · Aphids are economically important insect pests of agriculture and forest crops. They feed on phloem sap by extremely efficient mouthparts modified into long and flexible stylets. Adaptation to ...
Aphids are soft-bodied insects that use their piercing sucking mouthparts to feed on plant sap. They usually occur in colonies on the undersides of tender terminal growth. Heavily-infested leaves can wilt or turn yellow because of excessive sap removal.
Aphids are usually classified in the order Hemiptera, series Sternorryncha or sometimes suborder Homoptera along with the psyllids, whiteflies, scale insects, and mealybugs. Another approach is to put aphids in the order Homoptera and suborder Sternorryncha.
They have sucking mouthparts and feed exclusively on plant sap. Aphids feed on stems, leaves, and even roots! They reproduce rapidly to form colonies or clumps, particularly on new growth. The life cycle of most species is rather complex. In Wisconsin aphids spend the winter as eggs.
