Porrhodites fenestralis (Zetterstedt, 1828)

Brunke, Adam J. & Marshall, Stephen A., 2011, Contributions to the faunistics and bionomics of Staphylinidae (Coleoptera) in northeastern North America: discoveries made through study of the University of Guelph Insect Collection, Ontario, Canada, ZooKeys 75, pp. 29-68 : 32

Porrhodites fenestralis (Zetterstedt, 1828)

Materials.

CANADA: ON:Thunder Bay Distr. Pukaskwa Natl. Pk. beach trail, dunes, 30-VII-2003, S.M. Paiero (1).

Diagnosis.

This species can be readily distinguished from Porrhodites inflatus (Hatch), the only other member of the genus in North America, by the combination of: pronotal margins evenly arcuate; metasternum without microsculpture; antennomere two distinctly longer than segment three (Campbell 1984) (Fig. 2).

Porrhodites fenestralis is a holarctic, boreal to subarctic species known in the Nearctic region from Alberta, British Columbia, Manitoba, Newfoundland, Northwest Territories, Quebec, Yukon Territory, and Alaska, with a relict population in the Rocky Mountains of Montana and Wyoming (Campbell 1984).In the Palaearctic it is known from Austria, Czech Republic, Finland, Germany, Italy, Norway, Russia (North European Territory, Far East, East Siberia, and West Siberia), Sweden, and Switzerland ( Smetana in Löbl and Smetana 2004). Ganglbauer (1895) reported it from "Lake Superior", which could be Michigan, Minnesota or Ontario; the above specimen thus represents the first Ontario record of this species (Map 2). The new locality in Ontario confirms that Porrhodites fenestralis is transboreal in Canada. This species is typically collected in summer to early fall, and most known specimens with collection data were captured in flight; a long series was found swarming on a pine ( Pinus )tree (Campbell 1984). Another specimen was found in a deer mouse ( Pteromyscus ) nest (Campbell 1984).