Adelomyrmex grandis

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Adelomyrmex grandis
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Adelomyrmex
Species: A. grandis
Binomial name
Adelomyrmex grandis
Fernández, 2003

Nothing is known about the biology of Adelomyrmex grandis.


Adelomyrmex grandis and Adelomyrmex vaderi are two Colombian species that are similar in size but differ in a number of sculpture, shape, and color characters (Fernández, pers. com.). In A. grandis, the whole body is the same color, versus somewhat bicolored in A. vaderi (with lighter-colored gaster). The postpetiole of A. grandis is more typical, wider than long in dorsal view, and without a pronounced posterodorsal projection or carina in lateral view. In A. vaderi, the postpetiole is longer than wide in dorsal view, with a bluntly acute posterodorsal projection in lateral view. Also, the rugose sculpture on the face of mesosoma of A. grandis is more regular and less reticulate compared to A. vaderi. The two are geographically separate, with A. grandis being in the southwest of Colombia, on the western slope of the Cordillera Occidental, and A. vaderi in central Colombia on the eastern slope of the Cordillera Oriental. (Longino 2012)

Keys including this Species


Distribution based on Regional Taxon Lists

Neotropical Region: Colombia (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb



Known only from the worker caste.


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

  • grandis. Adelomyrmex grandis Fernández, 2003b: 18, figs. 34, 75 (w.) COLOMBIA.

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



Measurements. Holotype (Paratype). HL 1.0 (0.98) HW 0.96 (0.90) SL 0.67 (0.63) EL 0.13 (0.11) WL 1.0 (0.94) GL 1.3 (1.23) TL 4.2 (3.90) CI 96 (90) SI 70 (72).

Worker diagnosis. Mandibles with 6 teeth decreasing in size from the apical teeth. Last flagellomeres more or less gradually decreasing in size, so there is not a conspicuous club of two segments. Eyes relatively big, with more than 30 facets. Hypostomal tooth very small. Promesonotum convex, metanotal groove distinct. Propodeum sloping with two short spines directed upward, outward and backward. Petiole high, campaniform with anterior side sloping and posterior side slightly concave. Postpetiole with posterior face concave. Dorsum of head and promesonotum longitudinally striated/rugulose. Propodeal dorsum irregularly rugulose, with longitudinal trend. Propodeal declivity smooth and shining interrupted with more or less curved transverse rugulae between propodeal spines. Sides of petiole and postpetiole irregularly rugulose. Anterior face of petiole smooth and shining. Posterior surface of petiole with strong transverse striation. Hairs yellowish, long and flexuous on the body, more short and appressed on antennae and legs. Body brown to dark brown. Some long rugulae on mandibles. Tip of clypeal plate, clypeal teeth and mandible teeth black.

Type Material

Holotype worker: COLOMBIA, Nariño, Barbacoas, vereda Berlín, El Diviso, 520m, 22.viii.94, F. Escobar leg. No.294. Deposited in Insect Collection, Instituto de Ciencias Naturales. Paratypes: 2 w, same data as holotype, deposited in Humboldt Institute, Museum of Comparative Zoology.


  • Fernández, F. 2003b. Revision of the myrmicine ants of the Adelomyrmex genus-group (Hymenoptera: Formicidae). Zootaxa 361: 1-52 (page 18, figs. 34, 75 worker described)
  • Longino, J.T. 2012. A review of the ant genus Adelomyrmex Emery 1897 (Hymenoptera, Formicidae) in Central America. Zootaxa 3456, 1–35.