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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 ...

    2 days ago · 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? - Encyclopedia.com

    The word "insect" is derived from the Latin word insectum, meaning notched, and refers to their body segmentation. The second and third segments of the adult thorax often bear wings, which may …

  6. What Is Insect Biodiversity and Why Does It Matter?

    Why Does Insect Biodiversity Matter? Insect biodiversity is essential because insects support food production, ecosystem stability and natural balance. For example, more than 300 different crops that …

  7. 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 …

  8. 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.

  9. 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 …

  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 …