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Spider taxonomy. Spider taxonomy is that part of taxonomy that is concerned with the science of naming, defining and classifying all spiders, members of the Araneae order of the arthropod class Arachnida with more than 48,500 described species. [1] However, there are likely many species that have escaped the human eye to this day, and many ...
Spiders (order Araneae) are air-breathing arthropods that have eight limbs, chelicerae with fangs generally able to inject venom, [ 2 ] and spinnerets that extrude silk. [ 3 ] They are the largest order of arachnids and rank seventh in total species diversity among all orders of organisms. [ 4 ][ 5 ] Spiders are found worldwide on every ...
With so many kinds of eight-legged bugs running around (nearly 3,000 species in North America alone!), the most common house spiders are bound to pop up in your abode from time to time. And with ...
External anatomy. The underside and head of a female spider. Spiders, unlike insects, have only two main body parts (tagmata) instead of three: a fused head and thorax (called a cephalothorax or prosoma) and an abdomen (also called an opisthosoma). The exception to this rule are the assassin spiders in the family Archaeidae, whose cephalothorax ...
List of Cheiracanthiidae species. List of Chummidae species. List of Cithaeronidae species. List of Clubionidae species. List of Corinnidae species. List of Ctenidae species. List of Ctenizidae species. List of Cyatholipidae species. List of Cybaeidae species.
Wolf spider. Wolf spiders are members of the family Lycosidae (from Ancient Greek λύκος (lúkos) 'wolf'), so named for their robust and agile hunting skills and excellent eyesight. They live mostly in solitude, hunt alone, and usually do not spin webs. Some are opportunistic hunters, pouncing upon prey as they find it or chasing it over ...
Latrodectus is a broadly distributed genus of spiders with several species that are commonly known as the true widows. This group is composed of those often loosely called black widow spiders, brown widow spiders, and similar spiders. [3][4][5][6] However, the diversity of species is much greater. A member of the family Theridiidae, this genus ...
Evolution of spiders. A spider in Baltic amber. Spiders have been evolving for at least 380 million years. The group's origins lie within an arachnid sub-group defined by the presence of book lungs (the tetrapulmonates); [1][2] the arachnids as a whole evolved from aquatic chelicerate ancestors. More than 45,000 extant species have been ...