Abdomen - the terminal body region of an adult butterfly

Antenna(e) - clubbed filamentous sensory structure on the butterfly's head

Cell - area of a butterfly wing that is enclosed by veins

Chrysalis - resting stage of development in which a caterpillar, while enclosed in a hard case, transforms into an adult

Cocoon - silken case that envelops the chyrsalises of some true butterflies, skippers and most moths

Costa - front or forward edge of a butterfly's wing

Discal cell - a cell in the center of a butterfly's wing

Forewing - one of the forward wings

Hindwing - one of the rear wings

Host plant - the food plant of a caterpillar

Instar - caterpillar stage between molts

Larva(ae) - the eating and growing stage of a butterfly; a caterpillar

Margin - the edge of a wing

Molting - the shedding of a caterpillar's exoskeleton

Proboscis - coiled tube through which nectar and fluids are imbibed

Pupa - resting stage of a caterpillar during which it transforms into an adult

Scale - shinglelike plates covering a butterfly's wings

Stigma - specialized scent scales on the forewing of many male skippers and hairstreaks

Thorax - central portion of an insect's body