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Figure 5. Dendrogram of similarity among Lepiothorax colonies based on the 
simple matching coefficient. 
than to conspecific nests (Figure 5). The simple matching coefficient 
which weighs all behaviors equally, therefore produced a dendro- 
gram that gave satisfactory results for one species but far from 
pleasing results for the second. That is, differences among L. longi- 
spinosus nests were stronger than differences between species, based 
on simple matching coefficients. 
A second type of cluster analysis used geometric distance between 
ethogram frequencies of the colonies. This technique incorporated 
information on frequencies of different behavior types, yielding 
results more biologically meaningful than the matching coefficient 
(Cole 1980). For this analysis, rest was excluded. A dendrogram of 
the seven colonies produced from ethogram frequencies is shown in 
Figure 6. All colonies were quite similar to each other (minimum 
similarity was 97.72 on a scale of 100) because proportion data were 
used. Use of frequencies changes the scale but not relative positions 
of colonies within the dendrogram. Just as with the simple matching 
