Mycetophylax vallensis

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Mycetophylax vallensis
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Mycetophylax
Species: M. vallensis
Binomial name
Mycetophylax vallensis
(Kusnezov, 1949)



Distribution based on Regional Taxon Lists

Neotropical Region: Argentina (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb




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

  • vallensis. Cyphomyrmex daguerrei subsp. vallense Kusnezov, 1949d: 450, figs. 12-15 (w.) ARGENTINA.
    • Raised to species: Kusnezov, 1957b: 11 (in key).
    • Combination in Mycetophylax: Sosa-Calvo et al., 2017: 9.
    • See also: Kempf, 1964d: 34.


Kempf (1964) - The status of the present form is beset with problems that have no easy solution, without recourse to the types, if still available. I believe that Kusnezov was right when promoting vallensis (Kusnezov constantly spells vallense!) to full species level. As a matter of fact, Mycetophylax daguerrei is a significantly larger species with more undulated, mutually more approximated frontal carinae, scarcely prominent occipital lobe, longer scapes, armed epinotum, to mention just a few of the more obvious characters. M. vallensis is of smaller size, has more prominent occipital lobes, more broadly expanded frontal carinae which are scarcely constricted behind the frontal lobes. Its epinotum is unarmed and the scape does not project beyond the occipital lobes. It might he closely related with nemei, but in this form the postpetiole is extremely broad. The aberrant form, mentioned under lectus on a following page, might fall under this name. Indeed, this form includes a specimen from Tucumán (Kusnezov leg., n. 2339), which agrees in general characters with vallensis, but its lateral pronotal teeth are very low and the postpetiole is not cupuliform but broader. Short of settling all these doubts, I leave vallensis as a species inquirenda.

Type Material

Kempf (1964) - Seven workers, taken in Tafi del Valle, on the road to Santa Maria, Tucumán Province. The type locality is 2000 m above sea-level, its climate is temperate and relatively humid. The types appear to be lost.


  • Kempf, W. W. 1964d. A revision of the Neotropical fungus-growing ants of the genus Cyphomyrmex Mayr. Part I: Group of strigatus Mayr (Hym., Formicidae). Stud. Entomol. 7: 1-44 (page 34, see also)
  • Kusnezov, N. 1949d. El género Cyphomyrmex (Hymenoptera, Formicidae) en la Argentina. Acta Zool. Lilloana 8: 427-456 (page 450, figs. 12-15 worker described)
  • Kusnezov, N. 1957e. Nuevas especies de hormigas (Hymenoptera, Formicidae). Rev. Soc. Urug. Entomol. 2: 7-18 (page 11, Raised to species (in key))
  • Sosa-Calvo, J., JesÏovnik, A., Vasconcelos, H.L., Bacci, M. Jr., Schultz, T.R. 2017. Rediscovery of the enigmatic fungus-farming ant "Mycetosoritis" asper Mayr (Hymenoptera: Formicidae): Implications for taxonomy, phylogeny, and the evolution of agriculture in ants. PLoS ONE 12: e0176498 (DOI 10.1371/journal.pone.0176498).

References based on Global Ant Biodiversity Informatics

  • Kempf W. W. 1978. A preliminary zoogeographical analysis of a regional ant fauna in Latin America. 114. Studia Entomologica 20: 43-62.