The establishment of a hornet, Vespa bicolor F., in Taiwan was confirmed based on successful field collection of adults of both sexes and two subterranean colonies. Information on nesting habitat, nest measurement, and colony composition of this species are provided in this article. V. bicolor is the ninth hornet species ever recorded from Taiwan. Possible pathway for the introduction of this alien species is also discussed.
Keywords: Taiwan; honey bee predator; hornet; new record; social wasp.
© The Author 2014. Published by Oxford University Press on behalf of the Entomological Society of America.