Canadian Forest Service Publications
Review of Canadian species of the genera Gnathusa Fenyes, Mniusa Mulsant & Rey and Ocyusa Kraatz (Coleoptera, Staphylinidae, Aleocharinae). 2014. Klimaszewski, J.; Webster, R.P.; Langor, D.W.; Bourdon, C.; Hammond, H.E.J.; Pohl, G.R.; Godin, B. ZooKeys 412:9-40.
Issued by: Laurentian Forestry Centre
Catalog ID: 35532
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Four species of Gnathusa Fenyes (G. alfacaribou Klimaszewski & Langor, G. caribou Lohse, G. eva Fenyes, and G. tenuicornis Fenyes) occur in the Nearctic and in Canada. Three species of Ocyusa Kraatz (O. asperula Casey, O. californica Bernhauer, O. canadensis Lohse), and three species of Mniusa Mulsant and Ray (M. minutissima (Klimaszewski & Langor), M. yukonensis (Klimaszewski & Godin), and M. odelli Klimaszewski & Webster, sp. n.), are known from the Nearctic and all but O. californica occur in Canada. The recently described Gnathusa minutissima Klimaszewski and Langor and Ocyusa yukonensis Klimaszewski and Godin, are transferred here to the genus Mniusa Mulsant & Rey. New provincial and state records are reported for: G. eva (Alberta), G. tenuicornis (Alberta, Oregon, and New Brunswick), O. canadensis (New Brunswick and Newfoundland), M. minutissima (New Brunswick), and M. yukonensis (Nova Scotia, New Brunswick, Quebec, and British Columbia). The female of M. yukonensis was discovered and is illustrated for the first time. The genus Mniusa is reported for the first time from Canada and represents the first confirmed generic record for North America. Keys for identification of all Canadian species, images of body and genital structures, maps showing distribution mainly in Canada, and new bionomics data are provided.
Plain Language Summary
This article concerns the taxonomic reclassification of insects belonging to the genera Gnathusa, Mniusa and Ocyusa. It also includes identification keys, photographs, habitat data and distribution maps for all species in Canada that belong to these genera. For some species, this is the first reporting of their presence in Canada.
Taxonomy is a science dedicated to the classification of living organisms. Insects are grouped into various orders, which subdivide into families, genera, and then species. The taxonomic method is used in biodiversity studies, in particular, or in studies that measure the impact of anthropogenic activities on forest ecosystems.