Apterostigma urichi Forel nitidum, Neal A. Weber, University of North Dakota, 1936

Neal A. Weber, University of North Dakota, 1936, The biology of the fungus-growing ants. Part. I. New forms. 1, Revista de Entomologia 7, pp. 378-409 : 392

Apterostigma urichi Forel nitidum , var. nov.

Worker: Length 5.4-5.8 mm. - Differing from topotypes of A. urichi chiefly in the surface of the body which is distinctly shining instead of opaque. The fine, appressed pubescence is less abundant.

Male: Length 4.6 mm. - Smiliar to the males of urichi from Kartabo, B. Guiana, but the surface of the body is distinctly more shining and the hairs more numerous and upright. Color of body darker brown, appendages, though lighter, are still darker than in the typical urichi .

Described from a colony taken by myself July 8, 1936, near the Orealla Indian Mission on the lower Courantyne River, British Guiana. The ants had a well developed fungus garden enclosed in a silk-like envelope, the nest being in a rotted stump. In the wood surrounding the nest was a colony of Subulitermes parvellus,(Silvestri), det . A. E. Emerson. Further description of the nest with evidence of the nature of this fungal silk-like envelope will be given in a subsequent paper.