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 …

Dec 22, 2025 · 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 …

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 …

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...

Oct 16, 2019 · Over one million insect species have been identified – that’s over three times the number of known plant species. Over half of all known living organisms on Earth are insects.

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 …

Insects are found in every terrestrial environment on Earth, and terrestrial ecosystems everywhere in the world depend upon them. Without insects as pollinators, we would have far fewer flowering plants.

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 …

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.

Find research-based information on both helpful and harmful insects, spiders and other insect relatives. Learn how to identify insect damage on plants and in the landscape as well as how to prevent and …