The insects in which the maxillae are modified into a long coiled proboscis is

The insects in which the maxillae are modified into a long coiled proboscis is the butterfly. Butterflies have a long, straw-like tube called a proboscis that they use to suck nectar from flowers. This proboscis is actually a modified maxilla, which is a pair of mouthparts located behind the mandibles. The butterfly's proboscis is made up of two separate halves that are joined together. When the butterfly wants to feed, it uncoils the proboscis and dips it into the nectar of a flower. The proboscis then acts like a straw, allowing the butterfly to suck up the nectar and feed. Other insects like houseflies, mosquitoes and grasshoppers have different mouthparts that are not modified into a coiled proboscis. For example, houseflies have sponging mouthparts that they use to lap up liquids, while mosquitoes have a long, piercing mouthpart that they use to suck blood. Grasshoppers have chewing mouthparts that they use to eat plants.