Acromyrmex insinuator

and so far only known from Panama. As we already have a genome of the host, a new genome of the inquiline will likely shed light on the way in which social parasitism evolves via Emery's rule (i.e. by intraspecific social parasities becoming reproductively isolated). A. insinuator is special because it has retained part of the worker force, which suggests that it represents an incipient stage of inquiline evolution. This implies that highly interesting gene expression studies will be feasible once a reference genome has been obtained.