Geodromicus plagiatus

(Fabricius, 1798)

Geodromicus plagiatus is a rove beetle (Staphylinidae: Omaliinae) first described by Fabricius in 1798. It belongs to the plagiatus group, one of several species groups within the defined by male genitalia . The species has a broad Palaearctic distribution and has been recently recorded from previously unreported regions including Albania, Cataluña (Spain), Moldova, Georgia, Uzbekistan, and extensive areas of Russia.

Pronunciation

How to pronounce Geodromicus plagiatus: /d͡ʒiːoʊˈdrɒmɪkəs pleɪˈɡaɪətəs/

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Identification

Member of the plagiatus group, distinguished from other Geodromicus species groups by characteristics of the male genitalia; specifically, the lacks the strongly sclerotized found in the aokii and sinuatus groups. Distinguished from in the plagiatus group (G. corsicus, G. nigrita, G. pedemontanus, G. suturalis, G. magnus, G. paramerus, G. shii) by subtle morphological differences in male genitalia and external features detailed in taxonomic keys.

Distribution

Widespread across the Palaearctic region. Documented from Europe including Spain (Cataluña), France, Germany, Italy, United Kingdom, Scandinavia, Central and Eastern Europe, and the Balkans including Albania. Eastern distribution includes Moldova, Georgia, Uzbekistan, and extensive Russian territories: Pskov Area, Stavropol Area, Karachay-Cherkess Republic, Chechen Republic, Sverdlovsk Area, Khanty-Mansi Autonomous Region, Krasnoyarsk Territory, Evenkia, and Yakutia. Also recorded from the Nearctic: Canada (Alberta, Manitoba, New Brunswick, Newfoundland, Northwest Territories, Ontario, Quebec, Saskatchewan, Yukon) and USA (Alaska, Pennsylvania).

Similar Taxa

Geodromicus nigrita (P.W.J. Müller, 1821)Congeneric member of plagiatus group with overlapping Palaearctic distribution; distinguished by male genitalia and external features
Geodromicus suturalis (Lacordaire, 1835)Congeneric member of plagiatus group; similar body form but separable by aedeagal structure and sutural characteristics
Geodromicus sinuatus (Sharp, 1889)Similar congeneric but belongs to distinct sinuatus species group characterized by strongly sclerotized in male genitalia, absent in G. plagiatus

More Details

Taxonomic history

Originally described as Staphylinus plagiatus by Fabricius in 1798. Transferred to Geodromicus by Redtenbacher in 1857. Two junior synonyms were established in 2022: Geodromicus klimai A. Bordoni, 1984 and Geodromicus schoenmanni A. Bordoni, 1984. Lectotype of Staphylinus plagiatus was designated in a 2022 taxonomic revision.

Research gaps

Despite extensive distributional documentation, no published studies have addressed preferences, feeding , , or of this . All ecological fields remain undocumented in the scientific literature.