DAILY FOOD INPUT (g) 
1981] 
Mac Kay — Nest Phenologies of Pogonomyrmex 
55 
1.4 
0.6 - 
0.4 - 
0.2 - 
5 
4 
3 
2 
I 
40 
30 
20 
101 - 
P montonus 
I 
P. subnitidus 
if 
^ . . 
P. rugosus 
I 
t- 
JFMAMJ JASOND 
MONTHS 
Figure 11. A comparison of the daily food input (grams) in the three species of 
Pogonomyrmex harvester ants. 
