Adelomyrmex laevigatus

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

Adelomyrmex laevigatus inbiocri001279868 profile 1.jpg

Adelomyrmex laevigatus inbiocri001279868 dorsal 1.jpg

Longino (2012) - This species occurs in mature cloud forest leaf litter. It is found from 800–1500 m elevation, apparently in all the cordilleras of Costa Rica and western Panama. It is usually a lower density species than the sympatric Adelomyrmex tristani. At a 1000 m site on the Volcan Barva transect in Costa Rica, it was found in 18 of 150 miniWinkler samples, while it was not found at adjacent 500 m and 1500 m sites with similar sampling intensity (Longino & Colwell 2011).


Adelomyrmex laevigatus can be separated from the other species in the genus as the promesonotum is nearly completely smooth and shiny, with only a few rugulae on the sides. No other species of Adelomyrmex possesses this characteristic, except A. micans, in which the entire head is also smooth and glossy. Additionally, the sculpture of the head is distinctive, with a mixture of rugae and foveae. The first tergite is notably concave when viewed from above. The hypostomal teeth are large, robust, much more than any other species in the genus. The numbers of ommatidia ranges from 5–6 up to 12. (Fernández 2003)

Adelomyrmex laevigatus appears to be an upland version of Adelomyrmex microps, with A. laevigatus being darker, more robust, and with shorter pilosity. Although they occur on the same mountain slope (Volcan Barva in Costa Rica), so far they have not been found together, with A. laevigatus only known from 800 m elevation and above, A. microps below 500 m. (Longino 2012)

Keys including this Species


Latitudinal Distribution Pattern

Latitudinal Range: 10.93333333° to 8.783333333°.

Tropical South

Distribution based on Regional Taxon Lists

Neotropical Region: Costa Rica, Panama (type locality), Peru.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.

Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.



Known only from the worker caste.


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

  • laevigatus. Adelomyrmex laevigatus Mackay, in Fernández & Mackay, 2003: 600, figs. 4-7 (w.) PANAMA, COSTA RICA.
    • Type-material: holotype worker, 29 paratype workers.
    • Type-locality: holotype Panama: Chiriqui, Volcán, Hartman’s Finca,, #17801 (R.S. Anderson); paratypes: 3 workers with same data but #17813-17815, 3 workers Panama: Chiriqui, Parque Nac. Volcán Baru Boquete,, #17810 (R.S. Anderson), 4 workers Costa Rica: Alajuela, Rio Peñas Blancas, 800 m., 27.iv.1988, no. 2015-s (J. Longino), 1 worker Alajuela, 14 km. S Volcán Arenal, no. 2037-s (J. Longino), 4 workers Costa Rica: Guanacaste, Cacao Field Station, 12.ii.1995, #17664, 17726, 17732 (R.S. Anderson), 1 worker Cerro Cacao, 1500 m., 9-11.ii.1989, no. 2339-s (J. Longino), 6 workers Maritza Field Station, 875 m., 13.ii.1996, #17667, 17678, 17736 (R.S. Anderson), 1 worker Pitilla Field Station, 1000 m., 14.ii.1996 (R.S. Anderson), 1 worker Costa Rica: Puntarenas, Fila Cruces, 1200 m.,, no. 3693-s (J. Longino), 1 worker Monteverde, 1360 m., 16.iv.1988, no. 1997-s (J. Longino), 2 workers as last but 1400 m., iv.-v.1987 (S. Little), 3 workers as last but 1500 m., 16.iv.1989, no. 2468-s (J. Longino).
    • Type-depositories: MCZC (holotype); BMNH, GFMP, IAVH, INBC, MZSP, USNM, WEMC (paratypes).
    • Status as species: Fernández, 2003b: 19 (redescription); Longino, 2012: 19.
    • Distribution: Costa Rica, Panama.

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



Posterior border of head nearly straight. Mandibles with 5 teeth, the three apical-most larger. Anterior margin of clypeal plate concave. Eye with about 5 to 12 ommatidia. Hypostomal tooth large, stout. Promesonotum evenly convex and higher than propodeum. Metanotal groove well marked. Propodeal dorsum short. Propodeal teeth longer than wide. In dorsal view, anterior margin of first tergum clearly concave. Head with rugae and foveae confluent. Dorsum of promesonotum largely smooth and shining, with trace of longitudinal rugulae on the sides. Most of side of pronotum smooth and shining. Propodeum with transverse rugae. Dorsum of petiole and postpetiole smooth and shining, laterally with some oblique rugae. Pilosity on dorsum of body moderately long, scattered. Body dark brown, antennomeres lighter.


  • Fernández, F. 2003b. Revision of the myrmicine ants of the Adelomyrmex genus-group (Hymenoptera: Formicidae). Zootaxa 361: 1-52 (page 17, see also)
  • Fernández, F.; Mackay, W. P. 2003. Myrmicine ants of the Adelomyrmex laevigatus species complex (Hymenoptera: Formicidae). Sociobiology 41: 593-604 (page 600, figs. 4-7, Map 2 worker described)
  • Longino, J.T. 2012. A review of the ant genus Adelomyrmex Emery 1897 (Hymenoptera, Formicidae) in Central America. Zootaxa 3456, 1–35.

References based on Global Ant Biodiversity Informatics

  • Basset Y., L. Cizek, P. Cuenoud, R. K. Didham, F. Guilhaumon, O. Missa, V. Novotny, F. Odegaards, T. Roslin, J. Schmidl et al. 2012. Arthropod diversity in a tropical forest. Science 338(6113): 1481-1484.
  • Donoso D. A. 2014. Assembly mechanisms shaping tropical litter ant communities. Ecography 37 doi: 10.1111/j.1600-0587.2013.00253.x
  • Fernández F., and W. P. MacKay. 2003. The myrmicine ants of the Adelomyrmex laevigatus species complex (Hymenoptera: Formicidae). Sociobiology. 41: 593-604.
  • Fernández, F. 2003. Revision of the myrmicinae ants of the Adelomyrmex genus-group. Zootaxa 361: 1-52.
  • Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
  • Longino J. T. 2012. A review of the ant genus Adelomyrmex Emery 1897 (Hymenoptera, Formicidae) in Central America. Zootaxa 3456: 1-35
  • Longino J. T., and R. K. Colwell. 2011. Density compensation, species composition, and richness of ants on a neotropical elevational gradient. Ecosphere 2(3): 16pp.