Megalomyrmex staudingeri

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Megalomyrmex staudingeri
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Megalomyrmex
Species group: leoninus
Species: M. staudingeri
Binomial name
Megalomyrmex staudingeri
Emery, 1890

Megalomyrmex staudingeri casent0904607 p 1 high.jpg

Megalomyrmex staudingeri casent0904607 d 1 high.jpg

Specimen Labels


Sparse specimen label information suggests this species inhabitats forests found at elevations between 300 - 1000 m.

At a Glance • Ergatoid queen  



Brandão (1990) - Within a series from Santo Antonio do Ica I found a gamergate with 3 ocelli, the flat mesonotum clearly separate from other tergites, petiolar node compressed and the gaster distinctly swollen. The specimen from Iquitos come from bromeliads intercepted at the Miami Airport. Some characters show intraspecific variation. They are: degree of striation around antennal sockets, propodeum shape and the median area of clypeus, wich can be shaped as a flat triangular plate. This condition is extreme at the types of variety described by Forel, but not exclusive.


Distribution based on Regional Taxon Lists

Neotropical Region: Brazil, Colombia, Ecuador, Peru (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.

  • staudingeri. Megalomyrmex staudingeri Emery, 1890b: 47 (footnote; diagnosis in key) (w.) PERU. Senior synonym of nasutus: Brandão, 1990: 438.
  • nasutus. Megalomyrmex leoninus r. nasutus Forel, 1912g: 13 (w.) BRAZIL. Junior synonym of staudingeri: Brandão, 1990: 438.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.



Brandão (1990) - Mandibles smooth; anterior clypeal border straight with median denticle; 3-segmented antennal club; frontal suture impressed: 24 ocular facets at compound eye largest diameter; occipital margin raised; promesonotal suture generally not impressed dorsally, mesosternum and metasternum without developed acrotergites; dorsal face and declivity of propodeum meeting in a gentle angle, not forming lateral tubercles: dorsal face not transversally impressed; declivity smooth; epipetiolar carina complete; pedunculate petiole with anteroventral denticle originating a translucid longitudinal flange; dorsal margin of petiolar node, in side view, straight; petiolar spiracles laterally produced; dorsal margin of petiolar node, in frontal view, round; ventral face of postpetiole without process; apex of femura acuminate.

Color: deep-brown, almost black.

Type Material

Brandão (1990) - Type Loc.: Iquitos, Loreto, Peru (03°44'S, 73°12'W). Holotype at Museo Civico di Storia Naturale “Giacomo Doria”, Genova. Megalomyrmex leoninus nasutus Forel, 1912: 13. Type Loc.: Santo Antonio do Ica. AM, Brasil (03°05'S, 68°00'W). Nov. syn. (types examined - 2 workers at Museum de la Ville de Geneve).


References based on Global Ant Biodiversity Informatics

  • Ettershank G. 1966. A generic revision of the world Myrmicinae related to Solenopsis and Pheidologeton (Hymenoptera: Formicidae). Aust. J. Zool. 14: 73-171.
  • Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
  • Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).