Formica mutilata

Smith, F., 1859, Catalogue of hymenopterous insects collected by Mr. A. R. Wallace at the Islands of Aru and Key., Journal of the Proceedings of the Linnean Society of London, Zoology 3, pp. 132-158 : 137

8. Formica mutilata .

F. nigra; capite oblongo, truncato antice et sanguineo, antennis tarsisque rufo-testaceis.

Worker. Length 2 3 / 4 lines. Black and shining; the head truncate anteriorly, the antennae inserted wide apart, about the middle, the face blood-red before their insertion and deeply striated longitudinally, behind the antennae the head is black, smooth, and shining; the eyes ovate and placed backwards on the sides of the head. Thorax rounded in front and strangulated between the meso- and metathorax, the latter obliquely truncate; legs rather short and stout, the femora compressed, the anterior pair broadly dilated, the base and apex of the femora, the tibiae, and tarsi rufo-testaceous, the tibiae with a darker stain behind. Abdomen oblong-ovate, the apical margins of the segments narrowly pale testaceous; the scale of the petiole compressed, with its superior margin rounded.

Hab. Aru.

This is a very singular insect in many respects, and closely resembles in form the Formica truncata of Spinola.