Megalomyrmex wallacei is a Neotropical species of ants in the subfamily Myrmicinae.

Megalomyrmex wallacei can be found in Brazil (Amazonas, Rondônia, Pará, Tocantins), Guyana, Colombia, Costa Rica.

[1][2] This species occurs in mature wet forest, usually low-elevation rainforest.

Brandão (2003) reports the species nesting under leaves on the forest floor, in colonies of up to 300 workers.

This Myrmicinae-related article is a stub.