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Front View of an Insect (Grasshopper) Head

grasshoper_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.
Mandibles

Mandible: The part of the jaw used for chewing.

Labrum

Labium: The lower jaw.

Maxillae

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

American Museum of Natural History

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