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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 ...
This suborder is thought to form the sister group to all other living spiders, and to retain ancestral characters, such as a segmented abdomen with spinnerets in the middle and two pairs of book lungs. Extant members of the Mesothelae are medium to large spiders with eight eyes grouped on a tubercle.
This category contains articles about spiders that have a North American native distribution, rather than being limited to particular regions or countries in North America. (Hawaii and other Pacific islands belonging politically to the United States are placed in Category:Spiders of Oceania .)
Bolas spiders are defined by the way in which adults catch their prey. Like other members of the subfamily Cyrtarachninae sensu lato , bolas spiders specialize in catching moths . The scales covering moth wings are detachable, so that most ordinary orb webs are not effective at capturing moths.
Maevia intermedia is one of eight species of Salticidae, or jumping spider, in the genus Maevia, and is native to North America. [1] This species was originally reported by American Zoologist Robert D. Barnes in 1955 as a needed distinguishment between the similar-looking Maevia species, especially those found in the Americas.
You won’t believe just how big some spiders can get! Watch our video spotlighting the ten biggest spiders on earth with some walking on legs over a foot in width.
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 ]