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A spider web preserved in amber, thought to be 110 million years old, shows evidence of a perfect "orb" web, the most famous, circular kind one thinks of when imagining spider webs. An examination of the drift of those genes thought to be used to produce the web-spinning behavior suggests that orb spinning was in an advanced state as many as ...
Mastophora hutchinsoni, also known as the American bolas spider, is a species of orb weaver in the genus Mastophora. The genus is distributed extensively throughout various subtropical geographical areas including Australia, South Africa, Oriental Asia, and the Americas and is not found in Europe.
Wolf spiders, jumping spiders, fishing spiders and some crab spiders capture prey by chasing it, and rely mainly on vision to locate prey. [ 13 ] Some jumping spiders of the genus Portia hunt other spiders in ways that seem intelligent, [ 22 ] outflanking their victims or luring them from their webs.
This means that the divergence of web building and cursorial spiders must have occurred off the islands. There have been many events of cursorial evolution in various spider species around the world, [9] including a few Tetragnatha species, although many species have not been thoroughly studied. The factors leading to this change of behavior is ...
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 ...
In Jonathan A. Coddington's 2005 summary of the phylogeny and classification of spiders, Dictynoidea has disappeared. Desidae is an " agelenoid "; Dictynidae is the most basal family in the RTA clade; Cybaeidae and Hahniidae are "unplaced families"; Neolanidae (Amphinectidae) is a "stiphidioid". [ 3 ]
Archaeidae, also known as assassin spiders and pelican spiders, is a spider family with about ninety described species in five genera. [1] It contains small spiders, ranging from 2 to 8 millimetres (0.079 to 0.315 in) long, that prey exclusively on other spiders. [ 2 ]
Myrmekiaphila is a genus of North American mygalomorph trapdoor spiders in the family Euctenizidae, and was first described by G. F. Atkinson in 1886. [2] All described species are endemic to the southeastern United States. Originally placed with the Ctenizidae, it was moved to the wafer trapdoor spiders in 1985, [3] then to the Euctenizidae in ...