Table 1.

Source of bees for morphological and physiological comparisons.

group	n	age (days)	source
queens	23	61–108	post-reproductive observation nests
solitary females	15	62–107	post-reproductive observation nests
workers	23	5–38	post-reproductive observation nests
dispersers	21	similar to workersa	new natural nests
isolated females	93	10	reared in cages from pupal stage

^aMegalopta genalis are typically less than 10 days old when they disperse from their natal nests. We collected dispersers from natural nests that had been newly initiated within 1 to 9 ± 3 days. Therefore, these bees are probably similar in age to workers.