Formicium was originally described from isolated fossil forewings, with full queens, drones, and workers being described from Germany later. Until 2011, the genus included five species, however the two German species have been moved from Formicium and placed in the related genus Titanomyrma as T. giganteum and T. simillimum respectively. The wingspan of the females is among the largest known among ants. The size of the specimens is impressive, with a body length of 4-7 cm and wing span of up to 15 cm. The species Formicium mirabile, named by Theodore D. A. Cockerell in 1920, and Formicium brodiei, named by John O. Westwood in 1854, are both known from fore-wings found in middle Eocene of Bournemouth, Dorset, England.[1] The third species named, Formicium berryi was named by Frank M. Carpen