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Issue: Vol. 1058 No. 1: 4 Oct. 2005
Type: Articles
Published: 2005-10-05
DOI: 10.11646/zootaxa.1058.1.1
Page range: 1–34
Abstract views: 51
PDF downloaded: 3

Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species

Invertebrate Collection, Natural Science Research Lab., Museum of Texas Tech University, 4th and Indiana Streets, Lubbock, Texas 79409, USA
U.S. Department of Agriculture - Forest Service; Pacific Northwest Research Station, Forestry Sciences Lab., 3200 SW Jefferson Way, Corvallis, Oregon 97331, USA Current address: U.S. Geological Services - Biological Resources Division, Pacific Island Ecosystems Research Center, Kilauea Field Station, PO Box 44, Bldg 344, Hawai`i National Park, Hawai`i 96718, USA
U.S. Department of Agriculture - Forest Service; Pacific Northwest Research Station, Forestry Sciences Lab., 3200 SW Jefferson Way, Corvallis, Oregon 97331, USA
Araneae Mygalomorphae Antrodiaetidae Dipluridae Mecicobothriidae Antrodiaetus Atypoides Hexura Microhexura Oregon Cascade Mountains Siskiyou Mountains

Abstract

Extensive pitfall trapping in the Siskiyou and southern Cascade Mountains in southwestern Oregon, USA, revealed the presence of four new species of Antrodiaetus spiders (Antrodiaetidae) as well as numerous examples of the rarely reported Hexura rothi (Mecicobothriidae). The new species are: Antrodiaetus ashlandensis, A. coylei, A. effeminatus, and A. metapacificus. Additional records were also obtained for Antrodiaetus pugnax and Atypoides gertschi (Antrodiaetidae). Distributional data are provided for each species. The four new species are described and illustrated and a taxonomic key to all mygalomorph spiders from southwestern Oregon is provided. Further, each of the previously described Antrodiaetus spp. from the region is diagnosed. The morphology of the male genital plate is proposed as a potentially useful taxonomic character.

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