The life cycles of insects vary but most hatch from eggs.
Insect growth is constrained by the inelastic exoskeleton and development involves a series of molts.
As it allows for rapid yet stable movement, many insects adopt a tripedal gait in which they walk with their legs touching the ground in alternating triangles.
Although traditionally grouped with millipedes and centipedes—possibly on the basis of convergent adaptations to terrestrialisation—evidence has emerged favoring closer evolutionary ties with crustaceans.
Silkworms and bees have been used extensively by humans for the production of silk and honey, respectively.
In some cultures, people eat the larvae or adults of certain insects.
Clockwise from top left: dance fly (Empis livida), long-nosed weevil (Rhinotia hemistictus), mole cricket (Gryllotalpa brachyptera), German wasp (Vespula germanica), emperor gum moth (Opodiphthera eucalypti), assassin bug (Harpactorinae)], "cut into sections") are by far the largest group of hexapod invertebrates within the arthropod phylum.
Definitions and circumscriptions vary; in one approach insects comprise a class within the Phylum Arthropoda.