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The mesothorax is the middle of the three segments of the thorax of hexapods, and bears the second pair of legs. Its principal sclerites (exoskeletal plates) are the mesonotum ( dorsal ), the mesosternum ( ventral ), and the mesopleuron ( lateral ) on each side.
The insect thorax has three segments: the prothorax, mesothorax, and metathorax. The anterior segment, closest to the head, is the prothorax; its major features are the first pair of legs and the pronotum. The middle segment is the mesothorax; its major features are the second pair of legs and the anterior wings, if any.
It is formed by the prothorax, mesothorax and metathorax and comprises the scutellum; the cervix, a membrane that separates the head from the thorax; and the pleuron, a lateral sclerite of the thorax. In dragonflies and damselflies, the mesothorax and metathorax are fused together to form the synthorax. [1] [2]
The mesothorax is evolved to have more powerful muscles to propel moth or butterfly through the air, with the wing of said segment having a stronger vein structure. [ 33 ] : 560 The largest superfamily, Noctuidae , has the wings modified to act as tympanal or hearing organs [ 50 ] Modifications in the wing's venation include: [ 49 ]
They have prominent compound eyes on a mobile head, and (at most) one pair of functional, membraneous wings, [1] which are attached to a complex mesothorax. The second pair of wings, on the metathorax, are reduced to halteres. The order's fundamental peculiarity is its remarkable specialization in terms of wing shape and the morpho-anatomical ...
English: Insect anatomy scheme Tagmata A- Head B- Thorax C- Abdomen antenna; ocelli (lower) ocelli (upper) compound eye; brain (cerebral ganglia) prothorax; dorsal artery; tracheal tubes (trunk with spiracle) mesothorax; metathorax; first wing; second wing; mid-gut (stomach) heart; ovary; hind-gut (intestine, rectum & anus) anus; vagina ...
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The thorax (pl.: thoraces or thoraxes) [1] or chest is a part of the anatomy of mammals and other tetrapod animals located between the neck and the abdomen. [2] [3]In insects, crustaceans, and the extinct trilobites, the thorax is one of the three main divisions of the body, each in turn composed of multiple segments.