Note 111 — SUPPLEMENT TO HARVESTING ANTS.
Reading edition
Six other species belonging to the genus Atta are found in Europe, but they are all unknown to me.
It seems likely that, if other harvesting ants do exist in Europe they may belong to one of these six species; for we have seen (Ants and Spiders, p. 59) that all the ants which are known to possess this habit are either members of the genus Atta or belong to genera closely related to it.