Abstract
The highly eusocial stingless bees (reviewed
in [1, 2]) constitute a phylogenetically
old group [3] within the
Apidae. Probably related to this ancient
origin is their mass provisioning
of brood cells: they deposit all the
food on which the larva will develop
into the brood cell, prior to oviposition
and subsequent closure of the
cell.
The other social members of
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