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Crab spider feeding on a Junonia atlites butterfly in a Zinnia elegans flower. The Thomisidae are a family of spiders, including about 170 genera and over 2,100 species. The common name crab spider is often linked to species in this family, but is also applied loosely to many other families of spiders.
The small, bright orange, slug-like larvae inject a toxin into aphids' leg joints to paralyze them and then suck out the aphid body contents through a hole bitten in the thorax. [3] Larvae can consume aphids much larger than themselves and may kill many more aphids than they eat when aphid populations are high. [ 2 ]
The aphids tend to concentrate on the growing tips of plants, young leaves, shoots, flowers and developing seed pods. They are often tended by ants which feed on the secretions they produce and deter predators. Natural enemies include parasitic wasps, ladybirds, lacewing larvae and hoverfly larvae. [3]
An aphid infestation can ruin a garden. Learn what causes aphids and how to identify, kill, and control them naturally for healthy plants with no aphid holes. Read This If Aphids Are Eating Your ...
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Honeydew is a sugar-rich sticky liquid, secreted by aphids, some scale insects, and many other true bugs and some other insects as they feed on plant sap. When their mouthpart penetrates the phloem , the sugary, high-pressure liquid is forced out of the anus of the insects, allowing them to rapidly process the large volume of sap required to ...
In other species, the larvae are insectivores, preying on aphids, thrips, and other plant-sucking insects. Insects such as aphids are considered crop pests, so the aphid-eating larvae of some hoverflies are economically and ecologically important. The larvae are potential agents for use in biological control, while the adults are pollinators.
Woolly aphids generally are not much cause for alarm, although they can cause rather unsightly damage to plants, which is particularly a problem for growers of ornamental plants. Symptoms caused by their feeding on a plant include twisted and curled leaves, yellowed foliage, poor plant growth, low plant vigor, and branch dieback. [citation needed]