noun (plural labia /-bēə/)
1 Entomology A fused mouthpart that forms the floor of the mouth of an insect.
- Biplica, in addition, lacks the strongly tubercled and denticulate labium of Eriptycha.
- Insects close off the posterior of the mouth with a second ‘lip,’ the labium.
- Several groups developed active predatory larvae, still showing the spoon-shaped labium.
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