Bisnius siegwaldii
(Mannerheim, 1843)
Bisnius siegwaldii is a () in the tribe Staphylinini. It is a -sized with a broad distribution across northern North America and Russia. The species was originally described as Philonthus siegwaldii in 1843. Records indicate presence in and temperate regions of Canada and the United States.
Pronunciation
How to pronounce Bisnius siegwaldii: //ˈbɪs.ni.us siːˈɡwɔːl.di.aɪ//
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Identification
As a member of Bisnius, this can be distinguished from the related Philonthus by the presence of a distinct row of on the margins of the . The genus Bisnius also exhibits differences in the structure of the and the arrangement of sensory structures on the . Specific diagnostic features for B. siegwaldii require examination of male and comparison with closely related species in the genus.
Images
Distribution
Canada (Alberta, British Columbia, Labrador, Manitoba, New Brunswick, Newfoundland, Nova Scotia, Northwest Territories, Ontario, Prince Edward Island, Quebec, Saskatchewan, Yukon), United States (Alaska, California, Connecticut, Maine, Michigan, Montana, North Carolina, New Hampshire, New York, Oregon, Tennessee, Virginia, Vermont, Washington, Wisconsin, West Virginia), Russia.
Ecological Role
As a member of , this likely functions as a or scavenger in soil and litter , though specific ecological roles for B. siegwaldii have not been documented.
Similar Taxa
- Philonthus spp.Formerly classified in this ; separated based on pronotal setal patterns and genitalic structure.
- Bisnius sordidusClosely related with overlapping North distribution; requires genitalic examination for definitive separation.
More Details
Taxonomic history
Transferred from Philonthus to Bisnius based on phylogenetic revisions of the Philonthina. The Bisnius was redefined to accommodate with distinct pronotal setal patterns.