Vollenhovia emeryi is an Asian species introduced accidentally to Washington, D.C. It is currently spreading slowly in several east coast cities. Washington, DC, USA

Vollenhovia emeryi Washington, DC, USA

Vollenhovia emeryi is an Asian species introduced accidentally to Washington, D.C. It is currently spreading slowly in several east coast cities. Washington, DC, USA

Worker Vollenhovia emeryi with larvae and pupae in the brood nest. Washington, DC, USA

Vollenhovia emeryi worker (left) and queen. The larger size and more elaborate thorax distinguish most queens from worker ants. Washington, DC, USA

Vollenhovia emeryi colonies contain many laying queens. This photograph shows two, with workers and pupae. Washington, DC, USA