Glossary terms beginning with U
- Unguis
- cf. Claw - the final segment in the leg of an insect.
- Uniramia
- the subphylum within the Arthropoda that contains insect, centipedes, millipedes.
Read more on: Uniramia - Univoltine
- a species having one brood per year.
Read more on: Univoltine - Uric acid
- a waste substance excreted by insects and many other terrestrial animals.
Read more on: Uric acid - Urticating hairs
- defensive hairs possessed by some arachnids and insects that cause itching and irritation in mammals.
Read more on: Urticating hairs
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