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Antrodiaetus pacificus is a species of mygalomorph spiders native to the Pacific Northwest.Both male and female were first described by French arachnologist Eugène Louis Simon in 1884 under the name Brachybothrium pacificum. [1]
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 ...
(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 ...
“This is one of the few species of spider that can be dangerous to people,” says Potzler. “There are approximately 2,200 bites reported each year, but there has not been a death related to a ...
Other spiders in western states that might possibly cause necrotic injuries are the hobo spider, desert recluse spider, and the yellow sac spider. For example, the venom of the hobo spider , a common European species now established in the northwestern United States and southern British Columbia , has been reported to produce similar symptoms ...
Paintings of Araneus angulatus from Svenska Spindlar of 1757, the first major work on spider taxonomy. 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]
Field Guide to the Spiders of California and the Pacific Coast States (California Natural History Guides). University of California Press. ISBN 978-0520276611. Bradley, Richard A. (2012). Common Spiders of North America. University of California Press. ISBN 978-0520274884. Dean, D.A. (2016). "Catalogue of Texas spiders". ZooKeys (570): 1–703.
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