Cerci - Pair of appendages located at the end of the abdomen.

Collophore - Small, tubular structure located on underside of first abdomen segment.

Complete Metamorphosis - Metamorphosis where insect goes through changes in size and shape from larva to adult.

Furcula - Forked tail on springtails.

Hypermetamorphosis - Special type of development in parasitic insects.

Nymph - Young of an insect with simple metamorphosis

Simple Metamorphosis - Metamorphosis where the young looks like the adult.

Vestigial - Small or underdeveloped body part.