Ocypus nitens (Schrank 1781)

Brunke, Adam J., 2016, First detection of the adventive large rove beetle Ocypusnitens (Schrank) in Canada and an update of its Nearctic distribution using data generated by the public, Biodiversity Data Journal 4, pp. 11012-11012 : 11012

Ocypus nitens (Schrank 1781)

Ocypus nitens For synonymy and literature list see Schülke and Smetana (2015)

Materials

Type status: Other material. Occurrence: catalogNumber: AJB0000369 ; recordedBy: A.B.T. Smith; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: Canada; stateProvince: Ontario; county: Peel; verbatimLocality: 13 km NE Orangeville, Glen-Haffy Rd.; decimalLatitude: 43.9386; decimalLongitude: -79.9364; georeferenceProtocol: label; georeferenceSources: GPS; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 25.V.2014; habitat: Maple-Beech forest; Record Level: type: Other material; language: en; institutionID: Canadian Museum of Nature; institutionCode: CMNC; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence: catalogNumber: 1045283 ; recordedBy: "sh11"; individualCount: 1; lifeStage: adult; otherCatalogNumbers: 1045284; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: Canada; stateProvince: Ontario; county: Peel; verbatimLocality: Mississauga; decimalLatitude: 43.66; decimalLongitude: -79.64; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 13.VI.2014; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/1045283 Type status: Other material. Occurrence: catalogNumber: 1005679 ; recordedBy: P. Hollinger; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Vermont; county: Windsor; verbatimLocality: Sharon; decimalLatitude: 43.79; decimalLongitude: -72.45; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 27.IX.2014; habitat: side of house; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/1005679 Type status: Other material. Occurrence: catalogNumber: 773583 ; recordedBy: F. Kynd; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Maine; county: Waldo; verbatimLocality: Searsmont; decimalLatitude: 44.36; decimalLongitude: -69.2; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 17.V.2013; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/773583 Type status: Other material. Occurrence: catalogNumber: 721822 ; recordedBy: S. Nanz; individualCount: 1; lifeStage: adult; otherCatalogNumbers: 722232; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Maine; county: Knox; verbatimLocality: Vinalhaven; decimalLatitude: 44.05; decimalLongitude: -68.83; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 15.VIII.2011; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/721822 Type status: Other material. Occurrence: catalogNumber: 1176943 ; recordedBy: B. Woo; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Maine; county: York; verbatimLocality: Kennebunk Dump; decimalLatitude: 43.39; decimalLongitude: -70.59; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 25.XII.2015; habitat: under rock at field edge; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/1176943 Type status: Other material. Occurrence: catalogNumber: 589731 ; recordedBy: B. Woo; individualCount: 1; lifeStage: adult; otherCatalogNumbers: 589732; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Maine; county: York; verbatimLocality: Parson's beach, Kennebunk; decimalLatitude: 43.35; decimalLongitude: -70.52; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 23.X.2011; habitat: ocean beach under driftwood; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/589731 Type status: Other material. Occurrence: catalogNumber: 501820 ; recordedBy: B. Woo; individualCount: 1; lifeStage: adult; otherCatalogNumbers: 501821; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Maine; county: York; verbatimLocality: Kennebunk; decimalLatitude: 43.39; decimalLongitude: -70.59; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 30.III.2011; habitat: leaf litter; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/501820 Type status: Other material. Occurrence: catalogNumber: 862165 ; recordedBy: P. Crocket; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: New York; county: Onondaga; verbatimLocality: Fabius; decimalLatitude: 42.84; decimalLongitude: -75.99; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 3.XI.2013; habitat: on country road; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/862165 Type status: Other material. Occurrence: catalogNumber: 761929 ; recordedBy: S. Ausubel; individualCount: 1; lifeStage: adult; otherCatalogNumbers: 761930; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: New York; county: Dutchess; verbatimLocality: James Baird State Park; decimalLatitude: 41.69; decimalLongitude: -73.79; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 20.IV.2013; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/761929 Type status: Other material. Occurrence: catalogNumber: 504056 ; recordedBy: K. Hillig; individualCount: 1; lifeStage: adult; otherCatalogNumbers: 504296, 504297, 504300; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: New York; county: Saratoga; verbatimLocality: Ballston Lake; decimalLatitude: 42.95; decimalLongitude: -73.85; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 8.IV.2011; habitat: under loose bark on white pine log; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/504056 Type status: Other material. Occurrence: catalogNumber: 387557 ; recordedBy: K. Hillig; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: New York; county: Saratoga; verbatimLocality: Ballston Lake; decimalLatitude: 42.95; decimalLongitude: -73.85; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 21.IV.2010; habitat: under porch light; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/387557 Type status: Other material. Occurrence: catalogNumber: 158490 ; recordedBy: D. Thombs; individualCount: 2; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Rhode Island; county: Newport; verbatimLocality: Tiverton; decimalLatitude: 41.63; decimalLongitude: -71.21; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 13.X.2007; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/158490 Type status: Other material. Occurrence: catalogNumber: 788532 ; recordedBy: M. Jacobson; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: New Hampshire; county: Hillsborough; verbatimLocality: Hollis; decimalLatitude: 42.74; decimalLongitude: -71.59; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 27.IV.2012; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/788532 Type status: Other material. Occurrence: catalogNumber: 131220 ; recordedBy: T. Murray; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: New Hampshire; county: Hillsborough; verbatimLocality: Antrim; decimalLatitude: 43.03; decimalLongitude: -71.94; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 25.VII.2007; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/131220 Type status: Other material. Occurrence: catalogNumber: 104927 ; recordedBy: S. Price; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Massachusetts; county: Worchester; verbatimLocality: Fitchburg; decimalLatitude: 42.58; decimalLongitude: -71.8; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 22.IV.2007; habitat: inside house; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/104927 Type status: Other material. Occurrence: catalogNumber: 624308 ; recordedBy: Marc DiGirolomo; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Massachusetts; county: Worchester; verbatimLocality: Holden; decimalLatitude: 42.35; decimalLongitude: -71.87; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 2.IV.2010; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/624308 Type status: Other material. Occurrence: catalogNumber: 1158654 ; recordedBy: J. Crockwell; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Massachusetts; county: Berkshire; verbatimLocality: Old Mill Trail, Hinsdale; decimalLatitude: 42.44; decimalLongitude: -73.13; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 20.X.2015; habitat: forest trail, after sunset; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/1158654 Type status: Other material. Occurrence: catalogNumber: 1026658 ; recordedBy: J. Crockwell; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Massachusetts; county: Berkshire; verbatimLocality: Ashuwillticook Trail, Lanesborough; decimalLatitude: 42.52; decimalLongitude: -73.23; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 24.XI.2014; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/1026658 Type status: Other material. Occurrence: catalogNumber: 645048 ; recordedBy: B. Z.; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Massachusetts; county: Berkshire; verbatimLocality: Williamstown; decimalLatitude: 42.71; decimalLongitude: -73.21; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 13.V.2012; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/645048 Type status: Other material. Occurrence: catalogNumber: 630438 ; recordedBy: B. Z.; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Massachusetts; county: Essex; verbatimLocality: Newbury; decimalLatitude: 42.77; decimalLongitude: -70.84; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 15.IV.2012; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/630438 Type status: Other material. Occurrence: catalogNumber: 97964 ; recordedBy: T. Murray; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Massachusetts; county: Essex; verbatimLocality: North Andover; decimalLatitude: 42.7; decimalLongitude: -71.13; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 11.III.2007; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/97964 Type status: Other material. Occurrence: catalogNumber: 1058649 ; recordedBy: "ophis"; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Massachusetts; county: Norfolk; verbatimLocality: Blue Hills Reservation, Randolph; decimalLatitude: 42.21; decimalLongitude: -71.07; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 18.IV.2015; habitat: punky wood, log in oak/pine woods; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/1058649 Type status: Other material. Occurrence: catalogNumber: 384163 ; recordedBy: T. Murray; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Massachusetts; county: Norfolk; verbatimLocality: Sharon; decimalLatitude: 42.12; decimalLongitude: -71.18; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 10.IV.2010; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/384163 Type status: Other material. Occurrence: catalogNumber: 357461 ; recordedBy: C. Eiseman; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Massachusetts; county: Hampshire; verbatimLocality: Pelham; decimalLatitude: 42.39; decimalLongitude: -72.4; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 8.XII.2009; habitat: kitchen floor; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/357461 Type status: Other material. Occurrence: catalogNumber: 8435 ; recordedBy: T. DiTerlizzi; individualCount: 1; lifeStage: adult; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Massachusetts; county: Hampshire; verbatimLocality: Amherst; decimalLatitude: 42.38; decimalLongitude: -72.52; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 1.XI.2004; habitat: garage; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/8435 Type status: Other material. Occurrence: catalogNumber: 1217183 ; recordedBy: A. Hunt; individualCount: 1; lifeStage: adult; otherCatalogNumbers: 1217184, 1217185, 1217188; Taxon: scientificName: Ocypusnitens; family: Staphylinidae; genus: Ocypus; specificEpithet: Ocypusnitens; scientificNameAuthorship: (Schrank, 1781); Location: country: United States; stateProvince: Rhode Island; county: Washington; verbatimLocality: Block Island; decimalLatitude: 41.17; decimalLongitude: -71.57; georeferenceProtocol: GPS; georeferenceSources: Google Earth; Identification: identifiedBy: A. J. Brunke; dateIdentified: 2016; Event: samplingProtocol: none specified; eventDate: 30.IV.2016; habitat: dirt path near pond; Record Level: type: Other material; language: en; institutionID: Bugguide.net; basisOfRecord: Photograph; source: http://bugguide.net/node/view/1217183

Diagnosis

In the eastern North American fauna, O. nitens can be recognized using the diagnosis given by Brunke et al. (2011) (http://cjai.biologicalsurvey.ca/bnkmm_12/species_pages/ocyn.html) but can also be reliably identified from photos by its characteristically convex head and pronotum, and the relatively short elytra compared to the pronotum (Fig. 1). Superficially similar species of Tasgius (http://bugguide.net/node/view/868738), also adventive in North America, are more flattened dorsoventrally compared to Ocypus nitens (http://bugguide.net/node/view/862165).

Distribution

North America (adventive) (Fig. 2): Canada (ON); United States (MA, ME, NH, NY, RI, VT).

Ocypus nitens is newly recorded from Canada (Ontario) and the state of Vermont (United States). Its native range in the Palaeartic Region includes Europe, Russia, Iran and Turkey ( Schülke and Smetana 2015).

Taxon discussion

For a period of more than fifty years (1944-2000), the adventive species Ocypus nitens was known only from a small area in New England ( Newton 1987, Brunke et al. 2011; Fig. 2 (colored dots)). The expansion of its range westward (Ontario and New York) and northward (Maine) appears to have been recent and rapid, though the reasons for this remain unknown. Newton (1987) reported non-brachypterous individuals in North America, which may be expected to fly, at least occasionally. Their presence on several islands in New England supports this, though they could have been transported there with soil or other organic debris. There is a possibility that Ocypus nitens remained undetected in Ontario and New York for much of this fifty year period due to a lack of sampling. However, this scenario is considered unlikely, especially for southern Ontario, which has had a long history of collecting by professionals and students in rural and urban habitats. Furthermore, many adventive staphylinid species that now occur broadly in eastern North America were first detected in southern Canada during this period ( Klimaszewski et al. 2013). Ocypus nitens is large (12-20 mm, ( Schillhammer 2012)) and typically found in human disturbed habitats including woodlots and backyards, making it likely to be encountered by homeowners, naturalists and entomologists alike. Indeed, this is reflected in the number of recent photographic records available on BugGuide. This online, community-based resource continues to be an important source of first detections of adventive species in Canada, the United States, or the entire Western Hemisphere ( Kaldari et al. 2011, Carlson et al. 2012). Gibbs and Sheffield (2009) demonstrated that a rapid range expansion of an adventive bee species was captured by digital insect collections, including BugGuide, and emphasized their effectiveness when coupled with adequate identification resources or taxonomic expertise. Citizen science-based observation data, especially when verified, have become a cost and time-effective option to answer large-scale questions about insect distributions for certain groups that are taxonomically well-known and conspicuous, such as lady beetles ( Coccinellidae ) ( Gardiner et al. 2012).

Ocypus nitens joins Ocypus aeneocephalus (DeGeer), Tasgius ater (Gravenhorst), T. melanarius (Heer) and T. winkleri (Bernhauer) as the largest adventive staphylinids established in Canada and can be expected to eventually occur in Quebec and the Maritime Provinces. The even larger adventive species Ocypus olens ( Müller) has become established in western North America but is still restricted to the western United States (Washington, Oregon, California and Arizona) and unknown from Canada ( Newton et al. 2001, BugGuide). This is another staphylinid that would be easily monitored by citizen science. The impact of these large species on related, native edaphic rove beetles ( Platydracus and Dinothenarus ) occupying similar microhabitats is unknown but several Platydracus species appear to be less abundant than they were at the beginning of the 20th century ( Brunke et al. 2011).