1988] 
Cornell, Stamp, & Bowers — Hemileuca lucina 
51 
Table 2. Comparison of distance traveled among 5 trials, with n = number of 
larvae, W = Kendall’s coefficient of concordance, and significance (P) < 0.05 indi- 
cated by *. The null hypothesis for the Kendall test was W = 0 when distances varied 
randomly from trial to trial. Thus, a significantly high value indicates that distances 
traveled by individuals were consistent from trial to trial. 
Group 
Instar 
n 
W 
P 
A 
1 
50 
0.307 
>0.10 
2 
45 
0.330 
>0.05 
3 
43 
0.458 
<0.001* 
4 
36 
0.245 
>0.50 
5 
28 
0.327 
>0.10 
B 
1 
50 
0.197 
>0.50 
2 
41 
0.289 
>0.20 
3 
40 
0.479 
<0.001* 
4 
37 
0.370 
<0.05* 
5 
35 
0.715 
<0.001* 
C 
1 
48 
0.402 
<0.01* 
2 
41 
0.334 
>0.05 
3 
38 
0.338 
>0.05 
4 
39 
0.326 
>0.05 
5 
25 
0.599 
<0.001* 
D 
1 
50 
- 
- 
2 
34 
0.190 
>0.50 
3 
35 
0.609 
<0.001* 
4 
33 
0.464 
<0.01* 
5 
26 
0.428 
<0.05* 
Because it was common for larvae to remain massed for several 
hours at a time, we could not justify ignoring that group (D) in our 
statistical analysis on the grounds that it was abnormal. But conse- 
quently, we could not apply the appropriate statistical test, a nonpa- 
rametric two-way ANOVA which requires values in all cells, to the 
Gini coefficients, and a parametric test was inappropriate because it 
is unclear what assumptions can be made about the underlying 
distribution of Gini coefficients (Weiner and Solbrig, 1984). There- 
fore, we analyzed only instars II-V. The Gini coefficients were sig- 
nificantly different among instars II-V (Friedman’s test, followed by 
multiple comparisons (Conover, 1980); Friedman x 2 — 8.400, df = 
3, P = 0.04; Table 5, Fig. 1). Thus, inequalities in distances traveled 
decreased from instar to instar. 
