﻿AbstractThe male of the myrmicine genusErromyrmais described for the first time on the basis of two specimens ofErromyrmalatinodis(Mayr, 1872) collected in northern Madagascar. We used COI barcoding to confirm the identification of the male specimens as conspecific withErromyrmalatinodis. We provide an illustrated male-based key to the fourMyrmicinaetribes (Attini,Crematogastrini,Solenopsidini,Stenammini) and to theSolenopsidinigenera (Adelomyrmex,Erromyrma,Solenopsis,SyllophopsisandMonomorium) for the Malagasy region.