Insects (from Latin insectum) are hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (head, thorax …

Insects (class Insecta) have segmented bodies, jointed legs, and external skeletons.

Jan 10, 2026 · What Is an Insect? An insect is a small invertebrate animal belonging to the class Insecta, characterized by a three-part body plan (head, thorax, abdomen), six jointed legs, compound eyes, …

May 1, 2026 · What Counts As An Insect? A true insect has six legs, one pair of antennae, and a body divided into head, thorax, and abdomen. Many insects also have wings, though not all of them fly. …

There are over 24,000 insect species in the United Kingdom, with hundreds in almost every garden and green space. In this guide, we show the main groups or orders of insects, and highlight some …

All insects belong to the phylum Arthropoda. But unlike other arthropods—like lobsters, spiders, or millipedes—insects have three pairs of jointed legs, segmented bodies, an exoskeleton, one...

Only the adult stage of an insect has wings. Insect legs often are modified for very specific uses. Six legs are almost always present on adult or mature insects and are generally also present in the …

Insect Life Cycles An insect’s skeleton is on the outside, so it cannot grow with the body. This means they have to shed their skin, or molt, in order to grow. Once an insect becomes an adult, it usually …

Six legs, three body parts (HEAD, THORAX, and ABDOMEN), a hard EXOSKELETON, and compound eyes characterize insects. Most insects have a pair of antennae and two pairs of wings. Insects grow …

May 4, 2025 · As you may remember from elementary school, the most basic definition of an insect is an organism with three pairs of legs and three body regions: head, thorax, and abdomen.