42 
Psyche 
[Vol. 94 
O Raided by P/S #1 
□ Raided by P/N #10 
▲ P lucidus Portable nest 
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Fig. 1 Spatial distribution of raids by Polyergus lucidus. Numbers represent 
temporal order of raids during the 1985 season. 
A more impressive demonstration of the species exclusivity of 
raiding in these colonies can be seen in Figure 1, where a spatial 
distribution of the raids is shown. The raided nests constitute a 
majority (estimated to be at least 75%) of the total available slave 
species nests in the described area. 
There was no overlap between the two raiding colonies: none of 
the slave species nests were raided by more than one P. lucidus 
colony although several colonies were subjected to multiple raids by 
