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Type: Article
Published: 2021-01-29
Page range: 359–379
Abstract views: 96
PDF downloaded: 88

Revision of the Nearctic genus Tritoxa Loew (Diptera: Ulidiidae)

Canadian National Collection of Insects & Canadian Food Inspection Agency, OPL-Entomology, K.W. Neatby Bldg., C.E.F., 960 Carling Ave., Ottawa, ON, K1A 0C6, Canada
Department of Natural Resource Sciences, McGill University, Macdonald Campus, Ste-Anne-de-Bellevue, QC, H9X 3V9, Canada
deceased, formerly at McGill University, Macdonald Campus
Diptera Ulidiidae Tritoxa Nearctic new species black onion fly


The species of the Nearctic genus Tritoxa Loew are revised. Seven species of Tritoxa are recognized, including two new species: T. californica sp. nov. (type locality: near Spring Garden, California), T. cuneata Loew, T. decipiens sp. nov. (type locality: near Smithers, British Columbia), T. flexa (Wiedemann), T. incurva Loew, T. pollinosa Cole and T. ra Harriot. One species from California and Nevada based on female specimens remains undescribed. A key to all species is provided, species are illustrated and their distributions mapped. Wing patterns may be used to differentiate among all species, although confident identification of certain sympatric species requires confirmation by examination of male genitalia.



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