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  1. Insect - Wikipedia

    Insect vision is mainly through their compound eyes, with additional small ocelli. Many insects can hear, using tympanal organs, which may be on the legs or other parts of the body. Their sense of smell is …

  2. Insect | Definition, Characteristics, Types, Beneficial, Pest ...

    Dec 22, 2025 · Insect, any member of the class Insecta, the largest class of phylum Arthropoda. Insects have segmented bodies, jointed legs, and exoskeletons. They are distinguished from other …

  3. Insect - Definition, Types, List, Life Cycle, Anatomy, & Pictures

    Dec 30, 2025 · Insects are six-legged invertebrates that are members of the class Insecta within the phylum Arthropoda. They are distinguished by their three-part bodies covered by a hard, chitinous …

  4. Insects Pictures & Facts - National Geographic

    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...

  5. Insects – Definition, Examples, Characteristics

    Jan 10, 2026 · Comprehensive guide to insects, including anatomy, life cycle, classification, ecology, evolution, senses, and conservation.

  6. Insects: Types, Characteristics, Classification, and Fascinating Facts

    Sep 24, 2025 · Insects (Class Insecta) are the most diverse group within the animal kingdom, comprising a vast array of terrestrial and freshwater invertebrate organisms.

  7. What Are Insects? Basic Insect Anatomy - ThoughtCo

    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.

  8. Insect Basics - US Forest Service

    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 …

  9. What Is an Insect? - Smithsonian National Museum of Natural History

    To be sure an insect is an insect, we have to look at a combination of features. B, the Malaysian stick insect, has three body parts, six legs, wings, and a pair of antennae. Nice observation skills! You …

  10. List of insects | Britannica

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