Synonyms and other taxonomic changes
See the [url=https://wsc.nmbe.ch/species/25326]World Spider Catalog[/ur].
Explanation of Names
Latin: "unlike, dissimilar, different, unequal"
Identification
Males often overwinter one molt from maturity. See a juvenile male and a mature male below
    juvenile male               mature male
Palp:
Epigynum:
Range
Range is considered from Vancouver and Victoria, BC., WA, ID, OR, and northern CA.
Remarks
This and another European species (Thanatus vulgaris) are relatively recent immigrants.(1)