Megalomyrmex leoninus

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Megalomyrmex leoninus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Megalomyrmex
Species group: leoninus
Species: M. leoninus
Binomial name
Megalomyrmex leoninus
Forel, 1885

Megalomyrmex leoninus casent0178669 profile 1.jpg

Megalomyrmex leoninus casent0178669 dorsal 1.jpg

Specimen Label

Dr. Klaus Jaffe kindly forwarded me a colony of M. leoninus collected by him at Cucuta, Merida, Venezuela among stones. He did not notice any definite entrances, galleries or chambers. The colony contained 450 workers and 35 males, but no immatures, nor queens. (Brandão 1990)

At a Glance • Ergatoid queen  



Brandão (1990) - M. leoninus is the type species of the genus by monotypy. It's original description includes some highly variable characters as color, size and pilosity. M. leoninus presents the widest range of variation on the morphometric measurements taken. This variation is followed by an extreme variation in color pattern, from a bright red to a deep brown, almost black.


Distribution based on Regional Taxon Lists

Neotropical Region: Brazil, Colombia (type locality), Ecuador, French Guiana, Guyana, Suriname, Trinidad and Tobago, Venezuela.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb




The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • leoninus. Megalomyrmex leoninus Forel, 1885a: 372 (w.) COLOMBIA. See also: Brandão, 1990: 436.

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 round with median denticle: 3-segmented antennal club: frontal suture impressed; 22 ocular facets at compound eye largest diameter; occipital margin raised but not visible in head full face view; promesonotal suture impressed; mesosternum and metasternum without acrotergites; declivity smooth: epipetiolar carina complete; nonpedunculate petiole with anteroventral tooth but no flange; dorsal margin of petiolar node, in side view. concave; dorsal margin of petiole, in frontal view, round; postpetiole ventral face without process; apex of femura acuminate.

Color: reddish-brown (gaster may be darker than rest of the body).

Type Material

Colombia. Lectotype designation: Lectotype and paralectotype at Museum de la Ville de Geneve. Paralectotype at Museu de Zoologia da USP.