Adelomyrmex robustus

Adelomyrmex robustus occurs in mature cloud forest habitats, most often from 1600–1900 m elevation. It can be very abundant, occurring in over 90% of quantitative miniWinkler samples and being frequent at baits on the forest floor. It even appears to forage on low vegetation, occasionally occurring in beating samples. In many sites it is sympatric with Adelomyrmex paratristani, which can also be abundant, and two can be difficult to distinguish in samples. Project LLAMA participant D. J. Cox observed multiple nests in dead wood at a site in Chiapas. Nests of both A. robustus and Adelomyrmex paratristani'' were found in a single dead gall that contained several chambers. In other cases nests were found in close proximity to Perissomyrmex snyderi nests, in the same piece of rotten wood. Nests occurred with brood dispersed in multiple chambers.

Identification
Key to Adelomyrmex of the New World mainland

Distribution
Southern Mexico, Guatemala.

Distribution based on Regional Taxon Lists
Neotropical Region: Guatemala, Mexico.

Castes
Males have yet to be collected.

Nomenclature

 *  robustus. Adelomyrmex robustus Fernández, 2003b: 26, figs. 4-6, 25-30, 72 (w.q.) MEXICO.