Abdomen—The third part of an insect’s body or the second part of a spider’s body.

Anatomy—The different parts of the body.

Arthropod—An invertebrate with an exoskeleton and jointed legs.

Antenna—One of a pair of feelers on an insect’s head.

Cephalothorax—The first part of a spider’s body, combining the head and thorax.

Chrysalis—The pupal exoskeleton of a butterfly.

Cocoon—The covering of the pupa of a moth.

Colony—A group of insects that live and work together as a community.

Compound eyes—Large eyes that are composed of many lenses.

Elytra—The two leathery forewings of beetles that protect the fragile hind wings.

Exoskeleton—The hard outside of the body that encloses all of the inside organs.

Frass—The excrement (poop) of insects.

Gall—The plant growth that forms a home for a developing larva after the egg is laid on the leaf or stem of the plant.

Mandible—One of a pair of jaws of an insect that is usually used for chewing.

Metamorphosis, complete—The four changes that some insects go through as they mature: egg, larva, pupa, adult.

Metamorphosis, incomplete—The three changes that some insects go through as they mature: egg, nymph, adult.

Molt—The shedding of the outer layer of the exoskeleton so that the insect can grow.

Nymph—The second stage of insects that go through incomplete metamorphosis.

Ovipositor—The egg laying organ at the rear end of the female’s abdomen.

Pedipalps—The pair of feeler-like parts on a spider that helps to guide its prey to its mouth.

Pronotum—The hard covering that protects the second and third segments of the thorax in beetles.

Pupa—The inactive stage when the larva is turning into the adult.

Segments—Divisions of the body, legs, or antennae that gives them flexibility.

Social—Living in an organized community or colony such as ants or honeybees.

Solitary—Living alone.

Spinnerets—One or two pairs of organs on the spider’s abdomen that make the silk for webs, dens and wrapping its prey.

Spiracles—Holes in the sides of an insect’s body that are used for breathing.

Thorax—The second part of an insect’s body where the legs and wings are attached.

Venom—The paralyzing chemical that comes out of some spiders' fangs when they bite their prey.