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Gli insetti o entomi ( Insecta Linneo, 1758) sono una classe di animali appartenenti al grande phylum degli Arthropoda. Questa classe rappresenta il più grande tra i raggruppamenti di animali che popolano la Terra, annoverando oltre un milione di specie, pari ai cinque sesti dell'intero regno animale .
Insects have a exoskeleton, a three-part body ( ), three pairs of jointed , and a pair of antennae. Insects are the most diverse group of animals, with more than a million described ; they represent more than half of all animal species. The insect nervous system consists of a ventral nerve cord.
Insects are a class in the phylum Arthropoda. [2] . They are small terrestrial invertebrates which have a hard exoskeleton . Insects are the largest group of animals on Earth by far: about 926,400 different species have been described. [3] . They are more than half of all known living species.
L'evoluzione degli insetti data almeno dal periodo Devoniano, epoca a cui risale il più antico fossile di insetto rinvenuto, Rhyniognatha hirsti, la cui età è stimata fra i 407 e i 396 milioni di anni. Durante la storia della terra, il clima è cambiato numerose volte, influenzando la diversità degli insetti. Gli Pterigoti ...
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.
Cricket is the name of a US children's literary magazine founded in 1973; it uses a cast of insect characters. The sound of crickets is often used in media to emphasize silence, often for comic effect after an awkward joke, in a similar manner to tumbleweed .
The most recent understanding of the evolution of insects is based on studies of the following branches of science: molecular biology, insect morphology, paleontology, insect taxonomy, evolution, embryology, bioinformatics and scientific computing.