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Callobius severus is a species of spider found in parts of the United States and Canada. [1] Individuals reach roughly 19 mm (3/4") in size, with males typically appearing smaller than females. Cephalothorax and legs are reddish to dark brown and the abdomen is dark to light grey with fine hairs, often appearing with large, bilaterally mirrored ...
The distribution of P. johnsoni is bounded by the Great Plains, the Pacific Ocean, northern Mexico, and southern Canada. It occurs from sea level to tree line, occupying relatively dry habitats such as coastal dunes or oak woodlands. Between two and thirty redback jumping spiders per 1,000 m 2 were found during a study in 1976.
(Hawaii and other Pacific islands belonging politically to the United States are placed in Category:Spiders of Oceania.) Spiders native to North America may also be found in categories covering larger areas: Category:Cosmopolitan spiders – spiders native worldwide; Category:Holarctic spiders – spiders native to the Holarctic; includes North ...
Phidippus audax are commonly referred to as "bold jumping spiders" or "bold jumpers". [8] The species name, audax, is a Latin adjective meaning "audacious" or "bold". [8] This name was first used to describe the species by French arachnologist Nicholas Marcellus Hentz, who described the spider as being, "very bold, often jumping on the hand which threatens it". [9]
The specific epithet refers to its geographical distribution along the pacific coast of North America, between San Francisco Bay and Alaska. It is the northernmost mygalomorph spider in North America. [3] Both males and females have a carapace that is dark brown to black, and two to three sclerotized patches on the abdomen. Females are about 13 ...
Spider taxonomy is the 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, which has more than 48,500 described species. [1]
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Common house spiders are variable in color from tan to nearly black, frequently with patterns of differing shades on their body. [3] Females are generally between 5 and 6 millimetres (0.20 and 0.24 in) long, and males are generally between 3.8 and 4.7 millimetres (0.15 and 0.19 in) long. [ 3 ]