Front View of an Insect (Grasshopper) Head


Ocellus: Tiny simple eye that detects differences in light intensity. 
Compound eye: Large faceted eye. 
Antenna: Segmented appendage attached to the head above the mouthparts, with important sensory functions, including touch, smell, and in some cases hearing. 
Gena: The sides of the head below the compound eyes. 
Frons: The front part of the head between the compound eyes and the mouthparts. 
Clypeus: A part of the head in between the frons and the labrum.
Line drawing of grasshopper mandibles.

Mandible: The part of the jaw used for chewing.


Labium: The lower jaw.

Line drawing of sections of a grasshopper head shows two Maxillae (for grasping). Each has a long thin appendage, a palp.

Palps: Segmented structures that extend from the maxillae and labium.