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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 and abdomen ), three pairs of jointed legs, compound eyes, and a pair of antennae. Insects are the most diverse group of animals, with more ...
Beetles are insects that form the order Coleoptera ( / koʊliːˈɒptərə / ), in the superorder Holometabola. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 described species, is the largest of all orders, constituting almost 40% of described ...
Hemiptera ( / hɛˈmɪptərə /; from Ancient Greek hemipterus 'half-winged') is an order of insects, commonly called true bugs, comprising over 80,000 species within groups such as the cicadas, aphids, planthoppers, leafhoppers, assassin bugs, bed bugs, and shield bugs.
Insect morphology is the study and description of the physical form of insects. The terminology used to describe insects is similar to that used for other arthropods due to their shared evolutionary history. Three physical features separate insects from other arthropods: they have a body divided into three regions (called tagmata) (head, thorax ...
Synonyms. Cerasommatidiidae. Epilachnidae. Coccinellidae ( / ˌkɒksɪˈnɛlɪdiː /) [3] is a widespread family of small beetles. They are commonly known as ladybugs in North America and ladybirds in the United Kingdom; "lady" refers to mother Mary. Entomologists use the names ladybird beetles or lady beetles to avoid confusion with true bugs.
Heteroptera. The Heteroptera are a group of about 40,000 species of insects in the order Hemiptera. They are sometimes called "true bugs", [1] though that name more commonly refers to the Hemiptera as a whole. "Typical bugs" might be used as a more unequivocal alternative, since the heteropterans are most consistently and universally termed ...
The silverfish ( Lepisma saccharinum) is a species of small, primitive, [ 1] wingless insect in the order Zygentoma (formerly Thysanura ). Its common name derives from the insect's silvery light grey colour, combined with the fish-like appearance of its movements. The scientific name ( L. saccharinum) indicates that the silverfish's diet ...
A monarch butterfly ( Danaus plexippus) caterpillar feeding on an unopened seed pod of swamp milkweed. Caterpillars ( / ˈkætərpɪlər / KAT-ər-pil-ər) are the larval stage of members of the order Lepidoptera (the insect order comprising butterflies and moths ). As with most common names, the application of the word is arbitrary, since the ...