138 
Psyche 
[Vol. 92 
V_ NY : Huyck Preserve 
NY^: SUNY, Syracuse 
MA: Berkshire Mts. 
ME: Mt. Desert Island 
Fig. I. Sites at which morph frequencies in local populations of Enoptognatha 
ovata were scored. 
Pooled local populations from the four geographic regions dif- 
fered in overall morph frequencies (Fig. 2). Proportions of the yel- 
low morph, lineata, differed significantly among the four regions 
sampled (chi-square = 11.41, p < .01, df = 3), due to the lower 
frequency of lineata in Massachusetts compared to the other three 
areas. The most striking difference involved the solid red morph 
ovata. This form was absent from both New York populations, but 
occurred in both Massachusetts and Maine. The differences in the 
frequency of ovata among the four regions was significant statisti- 
cally (chi-square = 34.49, p < .001, df = 3). 
We uncovered similar differences in morph frequencies between 
local populations within one of the regions that we sampled (Fig. 3). 
Variation in representation of the morphs among populations on 
Mt. Desert Island in Maine was statistically significant (chi-square 
= 13.2; p < .05, df = 5,2 X 6 contingency table; comparison of lineata 
frequencies). The frequency of lineata varied from .70 to .96, and 
that of ovata from 0 to .15. The difference between population “A” 
and several of the others was quite striking, in that “A” had no ovata 
and very few redimita, whereas the others contained large numbers 
Results and Discussion 
