Dionychious ground layer spiders from Larix and Populus stands were collected by pitfall traps. The typical pattern of dominant, influent and accessory species was well marked. Populus stands had greater diversity of species than Larix stands. Those species characterized by large male:female sex ratios had sharp peaks in the first month of collecting, and others had smaller early season peaks or early season and late season peaks. Traps with an apron leading to the trap caught twice as many specimens compared to traps without an apron.
Cutler, Bruce; Grim, Lee H.; and Kulman, H M.
"A Study in the Summer Phenology of Dionychious Spiders from Northern Minnesota Forests,"
The Great Lakes Entomologist, vol 8
Available at: https://scholar.valpo.edu/tgle/vol8/iss3/2