Observations on the winter aggregates of two polistine paper wasps (Hymenoptera Vespidae Polistinae)

F.S. NASCIMENTO, J.A. GONZALEZ, S.F. GAYUBO

Abstract


Winter aggregates of Polistes versicolor (Olivier 1791) and P. ferreri (de
Saussure 1853) were studied to determine the frequency and timing at which
exits and returns of wasps occurred. Special emphasis was put on the likely
presence of trophallaxis among individuals. The study was conducted in the
tropical of altitude climatic zone of Brazil during the cold season. The highest
exit-return frequency took place between 13:30 and 16:30 hr. Absence of food
distribution among different adult females may be a pre-nourishment condition
to reproductive dominance when the founding phase begins. The presence of
males in the aggregates was confirmed.
KEY WORDS: Polistes, winter aggregates, Vespidae, Hymenoptera, trophallaxis.

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