You searched for: “insecta
Insecta, insectan
One of the classes of Arthropoda, including those that have one pair of antennae, three pairs of mouth organs, and breathe air by means of tracheae, opening by spiracles along the sides of the body. In this sense it includes the Hexapoda, or six-legged insects and the Myriapoda, with numerous legs.

Some are parasitic, others serve as intermediate hosts for parasites, including those that cause many human diseases. Some are wingless; others, such as, the Diptera, have only one pair of wings.

Respiration is by tracheoles, cuticle-lined air tubes that pass air directly to the tissues. Development in higher forms is holometabolous and passes through distinctive egg, larval, pupal, and adult stages.

This entry is located in the following units: insecto-, insect-, insecti- + (page 1) sec-, seg-, -sect, -section, -sectional (page 2)