|
Sphodros Fitchi
''Sphodros fitchi'' is a species of purseweb spider in the family Atypidae Atypidae, also known as atypical tarantulas or purseweb spiders, is a spider family containing only three genera. They are accomplished ambush predators that spend most of their time in a sock-like, silken retreat on the ground from where they kil .... It is found in the USA. References Further reading * * * Atypidae Spiders described in 1980 Spiders of North America {{Atypidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Purseweb Spider
Atypidae, also known as atypical tarantulas or purseweb spiders, is a spider family containing only three genera. They are accomplished ambush predators that spend most of their time in a sock-like, silken retreat on the ground from where they kill their prey. Distribution ''Sphodros'' and ''Atypus'' occur in North America, while ''Atypus'' and ''Calommata'' occur in Asia and Africa. Only ''Atypus'' species are found in Europe. ''Atypus affinis'', ''Atypus muralis'', and ''Atypus piceus'' are the only mygalomorph spiders found in northwestern Europe. Biology ''Atypus'' builds a silken tube parallel to the surface of the ground. While up to 8 cm of the tube lie on the ground, about 20 cm are buried vertically. The spider rests at the bottom of the tube. When prey walks on the exposed part, the spider, alerted by the vibrations, stabs the prey through the silk, cuts the web and drags the prey inside to be eaten. ''Calommata'' species, instead of building a purse web, live ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spiders Described In 1980
Spiders (order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank seventh in total species diversity among all orders of organisms. Spiders are found worldwide on every continent except for Antarctica, and have become established in nearly every land habitat. , 50,356 spider species in 132 families have been recorded by taxonomists. However, there has been debate among scientists about how families should be classified, with over 20 different classifications proposed since 1900. Anatomically, spiders (as with all arachnids) differ from other arthropods in that the usual body segments are fused into two tagmata, the cephalothorax or prosoma, and the opisthosoma, or abdomen, and joined by a small, cylindrical pedicel, however, as there is currently neither paleontological nor embryological evidence that spiders ever had a separ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
