Final answer:
Insects using the feeding method of sponging coat their food with saliva before ingesting it, distinguishing this method from others like piercing-sucking or chewing.
Explanation:
The feeding method described, where an insect coats food with saliva and then sucks it back up, is known as sponging. An example of an insect using this method is the house fly, as shown in Figure 3-2.
This feeding strategy is different from others like piercing-sucking or chewing, as it involves coating the food with saliva before ingestion, a characteristic feature of sponging insects.
Saliva, coating, and sucking are key elements in the sponging feeding method used by certain insects to consume their food.
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