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Bald-faced hornet
''Dolichovespula maculata'' is a eusocial wasp of the cosmopolitan family Vespidae. Its colloquial names include the bald-faced hornet, bald hornet, white-faced hornet, white-tailed hornet, blackjacket, and bull wasp. This species is a yellowjacket wasp, not a true hornet (genus ''Vespa''). Colonies contain 400 to 700 workers, the largest recorded colony size in its genus, Dolichovespula.〔 It builds a characteristic hanging paper nest. Workers aggressively defend their nest by repeatedly stinging invaders. However, the bald-faced hornet is less aggressive compared to the normal Yellowjacket wasp.
''Dolichovespula maculata'' is distributed throughout North America and Southern Canada, but is most common in the southeastern United States. Males in this species are haploid and females are diploid. Worker females can therefore lay eggs which develop into males. Matricide might occur after sufficient workers have been raised and queen-destined eggs have been laid, in order to give workers a reproductive advantage.〔
==Taxonomy and phylogenetics==
The Bald-faced Hornet gets its name from the characteristic white markings on its face.〔 It was first described by Linnaeus in 1763. ''D. maculata'' is part of the cosmopolitan family Vespidae. It is in the genus ''Dolichovespula''. Its black and white coloring differentiate it from its mostly black and yellow genus mates. 〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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