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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.
Scales also cover the head, parts of the thorax and abdomen as well as parts of the genitalia. The morphology of scales has been studied by J. C. Downey and A. C. Allyn (1975) [38] and scales have been classified into three groups, namely hair-like, or piliform, blade-like, or lamellar and other variable forms. [8]
Scorpion anatomy: 1 = Prosoma; 2 = Mesosoma; 3 = Metasoma In scorpions , the mesosoma is composed of six segments and forms the first part of the abdomen , containing all of the major organs. The first segment contains the sexual organs as well as a pair of vestigial and modified appendages forming a structure called the genital operculum.
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 ...
In some insect pupae, like the mosquitoes', the head and thorax can be fused in a cephalothorax. Members of suborder Apocrita (wasps, ants and bees) in the order Hymenoptera have the first segment of the abdomen fused with the thorax, which is called the propodeum .
Tympanal organ on the tibia of the katydid Zabalius aridus Tympanal organ of two species of moths, ventral view of abdomen (Tineidae and Pyralidae). A tympanal organ (or tympanic organ) is a hearing organ in insects, consisting of a tympanal membrane stretched across a frame backed by an air sac and associated sensory neurons. [1]
Thoracic and abdominal sterna of a beetle. A Mesosternum, B Metasternum, 1 first abdominal sternite, 2-6 rest of sternites. The sternum (pl.: sterna) is the ventral portion of a segment of an arthropod thorax or abdomen. In insects, the sterna are usually single, large sclerites, and external.
Calyx (anatomy) Campaniform sensilla; Cenchrus (insect anatomy) Cercus; Cervix (insect anatomy) Chordotonal organ; Clasper; Clypeus (arthropod anatomy) Coeloconica; Composition of the protocerebrum; Comstock–Needham system; Corium (entomology) Cornicle; Corpus allatum; Crista acustica; Crop (anatomy) Cryptonephridium; Cucullus