Solifugae

A Dictionary of Zoology | 1999 | Copyright

Solifugae (windscorpions; subphylum Chelicerata, class Arachnida) Order of arachnids in which the prosoma is divided into a proterosoma and two free segments. The abdomen is constricted, anteriad, and the entire body is covered with long, sensory hairs. The chelicerae are much enlarged, chelate, and armed with teeth. The pedipalps are leg-like, and their tarsi, as well as the tarsi of the first pair of walking legs, contain sensilla ampullacea. The carapace bears a large pair of median eyes and there may be vestiges of lateral eyes. The terminal segment of the last pair of walking legs bears racquet organs which contain sensory nerve endings. The tracheal system resembles that of the Insecta rather than Arachnida. Windscorpions have complex courtship behaviour, seemingly more advanced than that of scorpions but less advanced than that of spiders. Most species are crepuscular or nocturnal, and although none has specialized digging structures most of them construct burrows, and may aggregate in areas of high prey density, prey being caught by chase or ambush. Of the 800 or so species, six are found in Europe. Most, being desert-dwellers, are found in India, the W. Indies, western USA, and northern Mexico.

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Related entries from encyclopedias, dictionaries, and thesauruses

Solifugae
Book article from: A Dictionary of Zoology Solifugae ( windscorpions ; subphylum Chelicerata , class Arachnida ) Order of arachnids in which the prosoma is divided into a proterosoma...
racquet organ
Book article from: A Dictionary of Zoology racquet organ ( malleolus ) In Solifugae , a sensory organ on the ventral surface of the fourth pair of legs, somewhat resembling a tennis racquet.
windscorpions
Book article from: A Dictionary of Zoology windscorpions See SOLIFUGAE .
chelicera
Book article from: A Dictionary of Zoology ...chelicerae are generally held parallel and anterior to the body, working alternately. If they are large, as in spiders, Solifugae , and harvestmen, they serve as prehensile organs, squeezing and killing prey, and are also used in defence and in digging...
sensilla ampullacea
Book article from: A Dictionary of Zoology sensilla ampullacea In some Arachnida (e.g. Solifugae ), pits bearing short, sensory hairs.

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