. Brigham Young University science bulletin. Biology -- Periodicals. Biological Series, Vol. 5, No. 2, September, 1964. Figure 4. Berlese funnel used for extraction of arthro- pods. ARTHROPOD ASSOCIATES Relative numbers of individuals of each order and some families with their plant associations are sho\vn in Table 2. Figures 5 to 15 show the relative abundance of arthropods on the stems and leaves as compared with the numbers in the soil and humus of Ciich plant. Figures 16 to 46 show the seasonal occurrence of the predomi- nant groups of arthropods relative to each plant species. PSEUDOSCORP
. Brigham Young University science bulletin. Biology -- Periodicals. Biological Series, Vol. 5, No. 2, September, 1964. Figure 4. Berlese funnel used for extraction of arthro- pods. ARTHROPOD ASSOCIATES Relative numbers of individuals of each order and some families with their plant associations are sho\vn in Table 2. Figures 5 to 15 show the relative abundance of arthropods on the stems and leaves as compared with the numbers in the soil and humus of Ciich plant. Figures 16 to 46 show the seasonal occurrence of the predomi- nant groups of arthropods relative to each plant species. PSEUDOSCORPIONS (Pseudoscorpionida) Figs. 5-15 These arachnids were most commonly as- sociated with Atriplex confertifolia, but were also found with Coleogtjne rarnosissima, Larrea di- varicata and Ltjcium spp. All were taken from the soil and humus. Tlie minimal amounts of moist decaying organic debris under tlie plants likely is a critical factor affecting the presence of these organisms. Spiders (Araneida) Figs. 5-15 Although not in great numbers, spiders were found associated with all plant species except Salsola. They were least abundant with Kochia, Table 1. Plant community and specific localities" of plant collections at the Nevada Test Site. Atriplex canescens (Grayia-Lycium Community, Study 6 D D) - miles S of Well 3 B. Atriplex confertifolia (Atriplex-Kochia Community, Study 6 D A) - mile S of Well 3 B, thence mile E. Coleogyne rarnosissima (Coleogyne Community, Study 2 D A) - 11 miles N of Well 3 B on Rainier Mesa road, thence 100 yards S. Eurotia lanata {Grayia-Lycium Community, Study 6 D C) - Environs of Well 3 B. Grayia spinosa {Grayia-Lycium Community, Study 4 D A) - miles N of Well 3 B along Rainier Mesa Road, thence 1 mile W. Kochia americana {Atriplex-Kochia Community, Study 6 D B) - mile S of Well 3 B, thence mile E. Larrea divaricata {Larrea-Franseria Community, Study 5 D A) - mile E of Mercury Highway, N of Well 5 B road. Lycium anders
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