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Tailless Whip Scorpion (Order: Amblypygi) - Wiki latin dict size=40   common dict size=512
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Subject Tailless Whip Scorpion (Order: Amblypygi) - Wiki

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Tailless Whip Scorpion (Order: Amblypygi) - Wiki

From Wikipedia, the free encyclopedia

[Photo] Damon diadema. Photographer:

Amblypygi is an order of invertebrate animals belonging to the the class Arachnida, in the subphylum Chelicerata of the phylum Arthropoda.

Amblypygids are also known as tailless whip scorpions (see also whip scorpion). The name "amblypygid" means "blunt rump", a reference to a lack of the telson ("tail") carried by related species.

As of 2002, approximately 5 families, 17 genera and 136 species have been described. They are found in tropical and subtropical regions worldwide. Some species are subterranean; many are nocturnal. During the day, they may hide under logs, bark, stones, or leaves. They prefer a humid environment.

Physical description
Amblypygids may range from 5 to 40 mm. Their bodies are broad and highly flattened and the first pair of legs (the first walking legs in most arachnid orders) are modified to act as sensory organs. (Compare solifugids, uropygids, and schizomids.) These very thin modified legs can extend several times the length of body. They have no silk glands or venomous fangs, but can have prominent pincer-like pedipalps.

Amblypygids often move about sideways on their six walking legs, with one "whip" pointed in the direction of travel while the other probes on either side of them. Prey are located with these "whips", captured with pedipalps, then masticated with chelicerae.

Courting rituals involve the male guiding the female with his pedipalps over spermate deposited into one or more sperm masses. She gathers the spermate and lays fertilized eggs into a sac carried under the abdomen. When the young hatch, they climb up onto the mother's back; any which fall off before their first molt will be eaten by the mother.

Amblypygids, particularly the species Phrynus marginemaculatus and Damon diadema, are thought to be one of the few species of arachnids that show signs of social behavior. Research conducted at Cornell University by entomologists suggests that mother amblypygids comfort their young by gently caressing the offspring with her feelers. Further, in an experiment where two or more siblings were placed in an unfamiliar environment, such as a cage, they would seek each other out and gather back in a group.

Fossilized amblypygids have been found dating back to the Carboniferous period, for example Graeophonus.

Paracharon Hansen, 1921
incertae sedis:
Graeophonus† Scudder, 1890
Charinus Simon, 1892
Catageus Thorell, 1889
Sarax Simon, 1892
Charon Karsch, 1879
Stygophrynus Kraepelin, 1895
Damon C.L. Koch, 1850
Euphrynichus Weygoldt, 1995
Musicodamon Fage, 1939
Phrynichodamon Weygoldt, 1996
Phrynichus Karsch, 1879
Xerophrynus Weygoldt, 1996
Trichodamon Mello-Leit??o, 1935
Paraphrynus Moreno, 1940
Phrynus Lamarck, 1801

Appearances in popular media
A tailless whip scorpion makes an appearance in the movie Harry Potter and the Goblet of Fire, as the Death Eater, Barty Crouch Jr, while impersonating Mad-Eye Moody, uses in a demonstration of the Unforgivable Curses (whereas in the book he uses a spider). A tailless whip scorpion was also the organism consumed on the 10/19/2005 episode of Fear Factor and referred to on the program as an African cave-dwelling spider.
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