Requested reference
Dondale, C. D. & Redner, J. H. (1968). The imbecillus and rufus groups of the spider genus Philodromus in North America (Araneida: Thomisidae). Memoirs of the Entomological Society of Canada 55: 1-78. -- Show included taxa
Dondale, C. D. & Redner, J. H. (1968). The imbecillus and rufus groups of the spider genus Philodromus in North America (Araneida: Thomisidae). Memoirs of the Entomological Society of Canada 55: 1-78. -- Show included taxa