The head has projecting mouthparts with chewing mandibles. The mouthparts are partly retractable, with simple chewing mandibles and long maxillary palps. Their mouthparts are adapted for chewing, with well-developed mandibles (ectognathous mouthparts). The mouthparts are reduced, with minute styliform mandibles. They have a pair of elongated mandibles, and two pairs of maxillae. The hypopharynx is a somewhat globular structure, located medially to the mandibles and the maxillae. Mantises have large, triangular heads with a beak-like snout and mandibles. The mandibles and the maxillae are used for piercing the skin. The mouth parts contain a maxillae, a labium, and a set of mandibles. They start by lashing each other with their antennae and flaring their mandibles. The larvae have large heads with projecting mandibles. The cuticle in the mandibles (and claws) is distinct from the rest of the body. Some ants produce sounds by stridulation, using the gaster segments and their mandibles. Once inside, the ants seize their prey by using their short but sharp mandibles. Located below the labrum are the mandibles.