Requested reference
Lowrie, D. C. & Dondale, C. D. (1981). A revision of the nigra group of the genus Pardosa in North America (Araneae, Lycosidae). Bulletin of the American Museum of Natural History 170: 125-139. -- Show included taxa
Lowrie, D. C. & Dondale, C. D. (1981). A revision of the nigra group of the genus Pardosa in North America (Araneae, Lycosidae). Bulletin of the American Museum of Natural History 170: 125-139. -- Show included taxa