arrector pili: tiny muscle attached to a hair follicle

dihedral wing: a wing shaped with an upward ‘vee’

exoskeleton: a hard outer casing that insects and other creatures like spiders have instead of a skeleton

follicle: indentation of the skin from which a hair grows

genus: a group of closely related species

melanin: pigment that colours skin and hair

metamorphosis: a transformation that insects go through, as when a caterpillar turns into a butterfly

mucus: sticky stuff, like snot and spit

omnivore: an animal that eats both plants and other animals

vivarium: a container or home for live animals that provides an environment similar to their natural habitat (an aquarium is a watery vivarium)

wingspan: the length of an aircraft’s wing, measured from tip to tip