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The insect body is divided into three parts: the head, thorax, and abdomen. [2] The head is specialized for sensory input and food intake; the thorax, which is the anchor point for the legs and wings (if present), is specialized for locomotion; and the abdomen is for digestion , respiration , excretion , and reproduction.
The wings, head parts of thorax, and abdomen of Lepidoptera are covered with minute scales, from which feature the order Lepidoptera derives its names, the word lepidos in Ancient Greek meaning "scale". Most scales are lamellar (blade like) and attached with a pedicel, while other forms may be hair like or specialised as secondary sexual ...
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The pupae of Diptera can be obtect, exarate or coarctate. Obtect pupae have the outlines of the wings and legs visible but pressed close to the rest of the body, as the whole is wrapped by a single cuticle; exarate pupae have the appendages enveloped by a cuticle of their own and are therefore detachable from the rest of the insect.
Printable version; In other projects Wikimedia Commons; Wikidata item; ... Pages in category "Insect anatomy" The following 122 pages are in this category, out of 122 ...
An insect uses its digestive system to extract nutrients and other substances from the food it consumes. [3]Most of this food is ingested in the form of macromolecules and other complex substances (such as proteins, polysaccharides, fats, and nucleic acids) which must be broken down by catabolic reactions into smaller molecules (i.e. amino acids, simple sugars, etc.) before being used by cells ...
Like many insect body parts, including mandibles, antennae and stylets, cerci are thought to have evolved from what were legs on the primal insect form, [3] a creature that may have resembled a velvet worm, Symphylan or a centipede, worm-like with one pair of limbs for each segment behind the head or anterior tagma.
In insects, the sterna are usually single, large sclerites, and external. However, they can sometimes be divided in two or more, in which case the subunits are called sternites , [ 1 ] and may also be modified on the terminal abdominal segments so as to form part of the functional genitalia , in which case they are frequently reduced in size ...
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