Arthropod Morphology
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.
Mandible:
The part of the jaw used for chewing.
Labrum:
The upper jaw, just below the clypeus.
Labium:
The lower jaw.
Palps:
Segmented structures that extend from the maxillae and labium.
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