How are locusts mouth parts adapted for its eating?

The locust The locust has biting-chewing mouthparts and mainly lives on leaves of plants. The mouthparts consist of: a) The labrum or upper lip in front covers and protects the other mouthparts. It prevents food from falling out the mouth. b) The two mandibles or hard upper jaws have sharp, serrated edges. They move side- ways and rasp of minute pieces of food which are grinded and chewed and swallowed c) The two maxillae or soft lower jaws are used to hold and to push the food into the mouth. The maxillary palps are sensitive and taste the food. d) The labium or lower lip at the back prevents food from falling out the mouth. The labial palps selects, taste and handle food.