Adelomyrmex laevigatus

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 A. 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).

Identification
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)

Key to Adelomyrmex of the New World mainland

Distribution based on Regional Taxon Lists
Neotropical Region: Costa Rica, Panama, Peru.

Castes
Known only from the worker caste.

Nomenclature

 *  laevigatus. Adelomyrmex laevigatus Mackay, W.P., in Fernández & Mackay, 2003: 600, figs. 4-7 (w.) PANAMA. See also: Fernández, 2003b: 19.