Formica integra

Smith, F., 1858, Catalogue of the hymenopterous insects in the collection of the British Museum. Part VI. Formicidae., London: British Museum : 54

195. Formica integra . B.M.

Formica integra , Nyl. Form. Fr. et d'Alger. 62 (note).

Worker. Length 4 1/2 lines. - Rufo-ferruginous: abdomen black; closely resembling the F. sanguinea , but the clypeus has not the small central notch which characterizes that species. Head large, much wider than the thorax, excavated behind; the clypeus subcarinated in the middle. Thorax narrowed posteriorly; the scale of the peduncle incrassate, its apex obtuse; head, thorax and abdomen thinly sprinkled with ferruginous hairs.

Hab. United States.

The insect described is doubtless the large form of the worker, and probably the same as that to which Dr. Nylander refers in his note: we have adopted the name which he proposed on that supposition. In the collection of the Museum are specimens from North America, agreeing in every respect with the F. sanguinea of Europe.