AntWiki: The Ants --- Online
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Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Ectatomminae
Tribe: Ectatommini
Genus: Opisthoscyphus
Mann, 1922
Type species
Opisthoscyphus scabrosus (junior synonym of Alfaria minuta)

Gnamptogenys minuta casent0178680 profile 1.jpg

Gnamptogenys minuta casent0178680 dorsal 1.jpg

Specimen labels

This genus is not in use as it is currently considered to be a junior synonym of Alfaria.


The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • OPISTHOSCYPHUS [junior synonym of Alfaria]
    • Opisthoscyphus Mann, 1922: 4. Type-species: Opisthoscyphus scabrosus Mann, 1922: 5 (junior synonym of Alfaria minuta Emery, 1896g: 106), by original designation.

Taxonomic history

  • Opisthoscyphus in Ponerinae, Ectatommini: Wheeler, W.M. 1930f: 13; Donisthorpe, 1943f: 678.
  • Opisthoscyphus as genus: Wheeler, W.M. 1930f: 13; Donisthorpe, 1943f: 678.
  • Opisthoscyphus as junior synonym of Gnamptogenys: Brown, 1958g: 212; Kempf, 1972a: 111; Smith, D.R. 1979: 1337; Hölldobler & Wilson, 1990: 10; Bolton, 1995b: 40; Bolton, 2003: 175.
  • Opisthoscyphus as junior synonym of Alfaria: Brown, in Borgmeier, 1957: 115; Camacho, Franco, Branstetter, et al. 2022: 10.