Orodrassus
Chamberlin, 1922
Species Guides
2Orodrassus is a small of ground spiders in the Gnaphosidae, first described by R. V. Chamberlin in 1922. The genus is restricted to North America and contains only three described : O. assimilis, O. canadensis, and O. coloradensis. These spiders are part of the diverse ground spider , though specific ecological details remain poorly documented.
Pronunciation
How to pronounce Orodrassus: /ˌɒrəˈdræsəs/
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Identification
Orodrassus can be distinguished from other Gnaphosidae by genitalic characters, particularly male and female epigynal . The genus is characterized by features of the arrangement and structure typical of the . Species-level identification requires examination of reproductive structures and is not reliably accomplished from photographs alone.
Images
Distribution
North America. The three described have specific geographic associations suggested by their epithets: O. canadensis in Canada, O. coloradensis in Colorado (USA), and O. assimilis with broader distribution.
Similar Taxa
- DrassodesAnother in Gnaphosidae with similar ground-dwelling habits and general body form; distinguished by genitalic and pattern differences.
- GnaphosaType of Gnaphosidae with overlapping distribution in North America; requires microscopic examination of reproductive structures for separation.
More Details
Taxonomic stability
The has remained stable with three since its description, indicating either genuine rarity or undercollection due to cryptic habits.