1976] Greenquist & Rovner — Spiders on Artificial Foliage 199 
same sex (“trio”) in each terrarium. We observed the animals 
four times daily for 6 days at 3-hour intervals between 0900-1800. 
They were fed on the seventh day, and observations resumed on 
the eighth day. At each observation, the spider’s height (from 
the center of the cephalothorax to the terrarium base), the slope 
of the resting site, and the orientation of the body relative to the 
blade or leaf axis were recorded. When cannibalism or death 
occurred (eleven cases) during trio experiments, replacement was 
made with equivalently marked animals. Five unmated females 
built egg sacs during the experiments; however, this did not in- 
fluence stratum preference (paired-comparisons test with arcsine 
transformation; variation due to egg sac, F S (\a) = 0.323 NS; vari- 
ation among individuals, F s{4 a) = 1.892 NS). 
Results 
Stratum choice. — The differences in time spent on foliage vs. 
on the ground were significant among the four lycosid species 
(one-way ANOVA with arcsine transformation; F S ( 3 , 56 ) = 31.189, 
P < 0.001). L. punctulata (12 females, 4 males) averaged 24.4% 
of the recorded position on the foliage (n = 832); L. rabida (5 fe- 
males, 13 males) averaged 41.1% (n = 989); S. crassipes ( 3 females, 
15 males) averaged 1.2% (n = 595); and S. saltatrix (13 females, 
7 males) averaged 9.1% (n = 1022). An a posteriori STP-test re- 
vealed no significant difference in preference between the two 
Lycosa spp. S. saltatrix had significantly greater herbaceous pref- 
erence than S. crassipes (P < 0.05) and significantly less than the 
Lycosa spp. {P < 0.001). S. crassipes is omitted from the follow- 
ing analyses due to its very low tendency to rest on the foliage. 
Stratum choice by L. punctulata and S. saltatrix was not af- 
fected by variation in foliage design or animal density; however, 
the tendency to spend time on the foliage in L. rabida, while not 
affected by foliage design, was significantly greater at solo density 
(Table I). Data on the individuals of these three species are avail- 
able in Greenquist (1975). 
The presence of leaf litter in some of the terraria of S. saltatrix 
did not affect stratum preference for any foliage design (paired- 
comparisons test; Litter variation, F s( 1 , 2 ) = 1.370 NS; Foliage vari- 
ation, F s( 2.2)— 1.142 NS). This suggested that these spiders (and 
probably S. crassipes) would not seek the artificial foliage when 
