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Species: Formica gagatoides   Ruzsky, 1904 

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Taxonomic History (provided by Barry Bolton, 2019)

Formica fusca var. gagatoides Ruzsky, 1904a PDF: 289 (w.q.) RUSSIA. Palearctic. AntCat AntWiki HOL

Taxonomic history

Ruzsky, 1915a PDF: 423 (m.); Stärcke, 1935a PDF: 267 (footnote) (m.).
Combination in Formica (Serviformica): Emery, 1925d PDF: 249.
Raised to species: Holgersen, 1942b PDF: 15; Holgersen, 1943a PDF: 9.
Revived from synonymy and status as species: Kutter, 1977c: 255; Collingwood, 1979 PDF: 121; Kupyanskaya, 1990a: 188.


  Geographic regions (According to curated Geolocale/Taxon lists):
    Europe: Norway, Russia, Sweden
  Biogeographic regions (According to curated Bioregion/Taxon lists):

Distribution Notes:

exclusively Arctic from Norway to Northeast Siberia


in behaviour and general appearance it resembles F. fusca which it replaces in the North

Taxonomic Treatment (provided by Plazi)

Treatment Citation: Collingwood, C. A., 1979, The Formicidae (Hymenoptera) of Fennoscandia and Denmark., Fauna Entomologica Scandinavica 8, pp. 1-174

44. Formica gagatoides RuzskyHNS, 1904

Figs. 164,180,181.

Formica fusca var. gagatoides RuzskyHNS, 1904: 377.

Formica gagatoides RuzskyHNS; Holgersen, 1943:10 (redescription).

Worker. Black, mandibles and appendages brown. Head and alitrunk dull, gaster shining with sparse adpressed pubescent hairs - length less than half interspace width. Propodeum angled in profile. Petiole scale broadly heart-scaped with more or less emarginate dorsal border. Erect hairs on gaster restricted to posterior border of tergites; mid femora normally without outstanding hairs. Length: 4.2-6.0 mm.

Figs. 176-179. Formica fusca (L.)HNS. - 176: worker in profile; 177: head of queen in dorsal view; 178: queen in profile; 179: head of male in dorsal view. Scale: 1 mm.

Queen. Colour and pubescence as worker. Scutellum and gaster conspicuously shining. Pronotal hairs sparse and restricted to anterior part; mid femora bare. Length: 7.0-8.0 mm.

Male. Black, legs and external genitalia yellowish. Head and alitrunk finely punctured with scutellum and propodeum as well as gaster distinctly shining. Scale broadest at apex, with shallow emargination and with scattered long hairs overreaching rounded side margins of dorsal crest. Length: 6.0-7.0 mm.

Distribution. North and Central Fennoscandia from North Cape south to Buskerud and Opland in Norway, Varmland and Medelpad in Sweden and Tavastia borealis in Finland. Abundant in northern areas and in mountains, more local in centre and absent south'of latitude 60° in Norway to latitude 62° in Finland. - Range: exclusively arctic from Norway to Northeast Siberia.

Biology. This is one of the few Fennoscandian species that does not occur in the Alps or other mountains of Central Europe. In behaviour and general appearance it resembles F. fuscaHNS, which it replaces in the north, but can be immediately distinguished by the shining gaster from F. fuscaHNS and from F. transkaucasicaHNS by the duller head and alitrunk. It lives in small colonies of a few hundred workers with one or a few queens. Alatae fly in July and August.

Specimen Habitat Summary

Found most commonly in these habitats: 1 times found in alpine meadow, 1 times found in tundra.

Found most commonly in these microhabitats: 1 times under stone, 1 times on the ground.

Collected most commonly using these methods: 2 times search.

Elevations: collected from 849 - 951 meters, 908 meters average

Type specimens:

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