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  1. Insect - Wikipedia

    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 …

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

    Feb 6, 2026 · insect, (class Insecta or Hexapoda), any member of the largest class of the phylum Arthropoda, which is itself the largest of the animal phyla. Insects have segmented bodies, jointed …

  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. What Is An Insect? Insect Facts & 5 FAQ [2026 ] | Earth Life

    Mar 2, 2026 · Insects are like the unsung heroes of the animal kingdom. They pollinate plants, break down organic matter, and serve as a vital food source for other animals. But despite their …

  6. What Is an Insect? The Definition and Key Characteristics

    Aug 25, 2025 · Insects represent a diverse group of animals, inhabiting nearly every corner of Earth. These creatures play a significant role in various ecosystems, contributing to processes like …

  7. 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 …

  8. What Is An Insect? - Museum of the Earth

    They are arthropods: animals with a hard external skeleton, or exoskeleton. An exoskeleton is like a suit of armor, made of hardened plates with flexible joints that allow the animal to move. Arthropods also …

  9. Entomology for Master Gardeners: Part 2 | Entomology

    What is an Insect? An insect is a special kind (or "CLASS") of arthropod. To be a member of the Class Insecta, a creature must first be an arthropod (it must have no internal skeleton and it must have …

  10. Insect - New World Encyclopedia

    Insects are invertebrate animals of the Class Insecta, the largest and (on land) most widely distributed taxon (taxonomic unit) within the Phylum Arthropoda. Insects comprise the most numerous and …