An overview of the genus Ocyptamus macquart, 1834, with a revision of the Ocyptamus tristis species group

dc.contributor.advisorMarshall, Stephen A.
dc.contributor.authorGonçalves Miranda, Gil Felipe
dc.date.accessioned2011-09-15T20:03:08Z
dc.date.available2011-09-15T20:03:08Z
dc.date.copyright2011-09
dc.date.created2011-09-07
dc.date.issued2011-09-15
dc.degree.departmentFaculty of Environmental Sciencesen_US
dc.degree.grantorUniversity of Guelphen_US
dc.degree.nameDoctor of Philosophyen_US
dc.degree.programmeEnvironmental Biologyen_US
dc.description.abstractThe family Syrphidae (Diptera) has around 6000 species worldwide, including many species commonly seen hovering over flowers where they feed and seek possible mates. Many of the genera mimic bees or wasps, thus sharing a similar habitus, and their identification can prove difficult without a proper identification key. To aid in the identification of Syrphidae, the first chapter of the thesis presents an online interactive photographic key to the nearctic genera of Syrphidae, richly illustrated with field and laboratory images. One of the most speciose genera of the family is Ocyptamus Macquart, 1834, with around 300 species described. Recent studies suggest that Ocyptamus is paraphyletic with regards to the genera Eosalpingogaster Hull, 1949 and Toxomerus Macquart, 1855. The second chapter addresses this paraphyly through a phylogenetic analysis, based on morphological and molecular data, of 63 species currently or previously placed in the genus Ocyptamus. A monophyletic Ocyptamus was defined on the basis of cladistic principles, six new genera (Fragosa, Hypocritanus, Maiana, Nuntianus, Relictanum and Victoriana) were proposed and 10 names (Atylobaccha, Calostigma, Hermesomyia, Hybobathus, Mimocalla, Orphnabaccha, Pelecinobaccha, Pipunculosyrphus, Pseudoscaeva and Styxia) were ressurected. The third chapter considers the clade made up of Pelecinobaccha, Relictanum and Atylobaccha, revising the genera Pelecinobaccha and Relictanum, including 24 new species, 28 synonimized names, an identification key and distribution maps.en_US
dc.identifier.urihttp://hdl.handle.net/10214/3017
dc.language.isoenen_US
dc.publisherUniversity of Guelphen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectCladisticsen_US
dc.subjectNearcticen_US
dc.subjectNeotropicalen_US
dc.subjectOcyptamusen_US
dc.subjectSyrphidaeen_US
dc.subjectTaxonomyen_US
dc.titleAn overview of the genus Ocyptamus macquart, 1834, with a revision of the Ocyptamus tristis species groupen_US
dc.typeThesisen_US

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