evolution of spiders has been ongoing for at least 380 million years. The group's origins lie within an arachnid sub-group defined by the presence of...

of the earliest forms, and spiders that produce tangled cobwebs are more abundant and diverse than orb-weaver spiders. Spider-like arachnids with silk-producing...

architectures; other names for this spider family include tangle-web spiders and comb-footed spiders.[citation needed] When spiders moved from the water to the...

scientific names of some 67 spiders species in his Svenska Spindlar ("Swedish Spiders"), one year before Linnaeus named over 30 spiders in his Systema Naturae...

Sometimes one pair of eyes is better developed than the rest. Several families of hunting spiders, such as jumping spiders and wolf spiders, have fair to excellent...

Orb-weaver spiders are members of the spider family Araneidae. They are the most common group of builders of spiral wheel-shaped webs often found in gardens...

is that the presence of venomous spiders led to the evolution of a fear of spiders, or made acquisition of a fear of spiders especially easy. Like all...

casting spiders, is a family of cribellate spiders first described by Carl Ludwig Koch in 1850. It consists of stick-like elongated spiders that catch...

as trapdoor spiders due to their creation of trapdoors over their burrows. Other prominent groups include Australian funnel web spiders and tarantulas...

(kéras) 'horn') constitutes one of the major subdivisions of the phylum Arthropoda. Chelicerates include the sea spiders, horseshoe crabs, and arachnids...

production of new spider webs. Some spiders, such as the dewdrop spiders (Argyrodes), even eat the silk of other spider species. Spiders typically have...

Jumping spiders are a group of spiders that constitute the family Salticidae. As of 2019, this family contained over 600 described genera and over 6,000...

spiders" are not true spiders, nor even arachnids, their traditional classification as chelicerates would place them closer to true spiders than to other well-known...

into book lungs in primitive spiders and finally into tracheae in more advanced spiders (most of them still have a pair of book lungs intact as well),...

passing prey in or near the mouth of a burrow. Wolf spiders resemble nursery web spiders (family Pisauridae), but wolf spiders carry their egg sacs by attaching...

comprise the marine sea spiders and horseshoe crabs, along with the terrestrial arachnids such as mites, harvestmen, spiders, scorpions and related organisms...

diversification of molluscs through geologic time Evolution of spiders – Origin from a chelicerate ancestor and diversification of spiders through geologic...

Lampshade spiders, family Hypochilidae, are among the most primitive of araneomorph spiders. There are two genera and twelve species currently recognized...

Evolution is the change in the heritable characteristics of biological populations over successive generations. It occurs when evolutionary processes...

families of spiders. Many members of this family are also known as flower spiders or flower crab spiders. Members of this family of spiders do not spin...

A number of spiders can cause spider bites that are medically important. Almost all spiders produce venom but only a few are classified as "venomous" and...

invertebrates caught mid-air is a spider. Out of 28,739 specimens, 1,401 turned out to be spiders. Ballooning is a behavior in which spiders and some other invertebrates...

(/əˈræknɪdə/) of the subphylum Chelicerata. Arachnida includes, among others, spiders, scorpions, ticks, mites, pseudoscorpions, harvestmen, camel spiders, whip...

Velvet spiders (family Eresidae) are a small group (about 100 species in 9 genera) of spiders almost entirely limited to the Old World, with the exception...

special called The Making of Spider-Man, The Evolution of Spider-Man, outtakes, screen tests, an E! Network special called Spider-Mania and more. Both discs...

however, appear to be crucial for the evolution of sociality in spiders. Recent theory suggests that social spiders evolved along a restricted pathway through...

Asia; as of April 2024[update], this was the circumscription accepted by the World Spider Catalog. The family contains the most basal living spiders, belonging...

family of mygalomorph spiders that construct burrows with a cork-like trapdoor made of soil, vegetation, and silk. They may be called trapdoor spiders, as...

and multiple generations of Portiid spiders. The spiders each have their own identities, lives, and experiences, on top of their genetic memories called...

dividing spiders into two subgroups, Mesothelae for Liphistius, and Opisthothelae for all other spiders. The names refer to the position of the spinning...