Behavior
Vespula flavopilosa is a somewhat recently discovered species, but so far all known data point to the fact that the species is probably not capable of founding their own colonies. Lone queens during spring will search out young colonies of V. maculifrons or V. alascensis to usurp (Social Parasitism).MacDonald et al. (1980) considered V. flavopilosa to be a facultative temporary social parasite of V. maculifrons and V. alascensis (as V. vulgaris) based on five mixed colonies from across the range of the species.
References:
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https://bugguide.net/node/view/14081