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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]
It was unwittingly introduced to the Pacific Northwest of North America circa 1900 due to human activity and has strongly increased in numbers for the last century. [7] The spider has been found in several European countries in which it was previously not recorded, like Estonia, Latvia, and Lithuania.
Eratigena agrestis is distributed from Europe to Central Asia, and is also found in western North America, in the Pacific Northwest and Great Basin. [1] It is recorded in the checklist of Danish spider species, [ 9 ] and is present on the small artificial island of Peberholm , probably having been carried there by trains.
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 ...
"An extraordinary new family of spiders from caves in the Pacific Northwest (Araneae, Trogloraptoridae, new family)". ZooKeys (215): 77–102. doi: 10.3897/zookeys.215.3547. ISSN 1313-2989. PMC 3428790. PMID 22936872. Jackman, John A. (2002). A Field Guide to Spiders and Scorpions of Texas. Gulf Publishing. ISBN 978-0877192640.
Antrodiaetidae, also known as folding trapdoor spiders or folding-door spiders, is a small spider family related to atypical tarantulas. They are found almost exclusively in the western and midwestern United States, from California to Washington and east to the Appalachian Mountains . [ 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.
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.