Temporal range: Burdigalian, Early Miocene Dominican amber, Dominican Republic
This is one of only a handful of species within the subfamily Dorylinae known from fossils. It is also the only known species of Neivamyrmex found within the Greater Antilles, although the genus does occur in the Lesser Antilles. This would suggest that the genus was once more widely spread. Neivamyrmex ectopus appears to be overall more similarity to contemporary Mexican and United States species rather than South American species, suggesting a closer relationship to these northern taxa.
This taxon was described from Dominican amber, Dominican Republic (Burdigalian, Early Miocene).
The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.
- †ectopus. †Neivamyrmex ectopus Wilson, 1985b: 11, figs. 1, 2 (w.) DOMINICAN AMBER (Miocene).
Holotype: Museum of Comparative Zoology, without number.
- Wilson, E. O. 1985b. Ants of the Dominican amber (Hymenoptera: Formicidae). 2. The first fossil army ants. Psyche (Camb.) 92: 11-16. (page 11, figs, 1, 2 worker described)