The Metricus paper wasp (''Polistes metricus'') is a wasp native to North America. An interesting fact about this species is that ''Polistes metricus'' foragers take off from their nests as if they already know how long their trip is. For short flights they exit the nest flying horizontally, while for long flights they exit the nest flying straight up into a high altitude before pursuing their direction.'' In the United States, Polistes metricus'' ranges throughout the southern Midwest, the South, and as far northeast as New York, but has recently been spotted in southwest Ontario. A single female specimen has also been reported from Dryden, Maine. ''Polistes metricus'' is dark colored, with yellow tarsi and black tibia.〔 Nests of'' Polistes metricus'' can be found attached to the sides of buildings, trees, and shrubbery.〔 (habits of P. metricus )〕
''Polistes metricus'', like other ''Polistes ''species, has evolved eusociality and demonstrates behaviors including nestmate discrimination and local mate competition.〔 Like the other members of the order Hymenoptera, ''Polistes metricus'' has a haplodiploid genetic system.〔 Nests of ''Polistes metricus'' have distinct characteristics like the ability to share nests with other ''Polistes'' species and reutilize nests multiple seasons.〔
''P. metricus'' prefers to consume soft-bodied prey, especially caterpillars. Less common names that ''P. metricus'' is known by are ''P. pallipes ''and ''P. metricus'' Say.
==Taxonomy and phylogeny==
''Polistes metricus'' is found to be most closely related to ''Polistes carolina.'' The most recent phylogenetic analysis shows that both ''Polistes carolina ''and ''Polistes metricus ''share a common ancestor with ''Polistes bellicosus.''
''Polistes metricus'' belongs to the kingdom Animalia (animals), the phylum Arthropoda (arthropods), the subphylum Hexapoda (having six feet), the class Insecta (insects), the order Hymenoptera (which includes ants, bees, wasps, and sawflies), the taxon Aculeata (which includes stinging wasps, bees, and ants), the superfamily Vespoidea (which includes hornets, yellowjackets, paper wasps, potter wasps, mason wasps, and pollen wasps), the family Vespidae, the subfamily Polistinae (paper wasps), the genus ''Polistes'', and the species ''metricus''.
Researchers have found that ''Polistes metricus'' is most closely related to ''Polistes carolina.'' Recent phylogenetic analysis has shown that both ''Polistes metricus'' and ''Polistes carolina'' share a common ancestor with ''Polistes aurifer'' and ''Polistes fuscatus''〔
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