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Polistes semenowi : ウィキペディア英語版 | Polistes semenowi
''Polistes semenowi'' is a kleptoparasitic paper wasp that is found in several regions of high altitude in Europe. As one of only three obligate parasites in the genus ''Polistes'', it uses the nests of other paper wasps (primarily ''Polistes dominula'') to rear its young.〔 In order to evade detection by the host nest, ''P. semenowi'' employs mimicry by adjusting its cuticular hydrocarbons to match those of the host.〔Lorenzi, M. C., Cervo, R., Zacchi, F., Turillazzi, S., & Bagnères, A. (2004). Dynamics of chemical mimicry in the social parasite wasp ''Polistes semenowi'' (Hymenoptera: Vespidae). ''Parasitology'', 129, 643-651.〕 Once the host nest has been infiltrated, the parasitic female will physically attack the host queen in order to subdue her and become the colony's new queen. ''P. semenowi'' displays several morphological adaptations for parasitism such as increased mandible size and an enlarged Van der Vecht's organ. This species is unusual because it does not have the ability to produce workers and is only able to produce individuals who have the capacity to reproduce.. == Taxonomy and phylogeny == Due to its morphological differences from other ''Polistes'' species, ''Polistes semenowi'' was placed in a separate genus ''Sulcopolistes'' by Blüthgen in 1938.〔Mead, F. (1991). Social parasitism of a ''Polistes dominulus'' christ colony by ''Sulcopolistes semenowi'' Moravitz: changes in social activity among the queens and development of the usurped colony. ''J. Ethol.'', 9, 37-40.〕 However, in 1991 (Carpenter ) established that this species belonged in the genus ''Polistes''.〔 ''P. semenowi'' is closely related to ''Polistes sulcifer'' and ''Polistes atrimandibularis'', which are the only other obligate social parasites in the genus ''Polistes''.〔Petrocelli, I., & Turillazzi, S. (2012). Comparative morphology of Van der Vecht's organ in ''Polistes'' social parasites: host ecology and adaptation of the parasite. ''Biological Journal of the Linnean Society'', 109, 313-319.〕 Research using mitochondrial rRNA suggests that these three species descended from a common ancestor, and that they are more closely related with ''Polistes nimpha'' and ''Polistes dominula'' than with ''Polistes gallicus'' and ''Polistes biglumis''.〔
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