The biology of the fungus-growing ants. Part. I. New forms. 1 Author Neal A. Weber, University of North Dakota text Revista de Entomologia 1936 7 378 409 http://antbase.org/ants/publications/3011/3011.pdf journal article 3011 Apterostigma mayri Forel pallidum , var. nov. Worker: Length 2.5-2.7 mm. - A distinctly paler variety. The color is a pale grayish ferruginous compared with the dark brown of the typical form. The mesonotal and especially the gastric carinae are more distinct. Female (dealate): Length 3.3 mm. - Color and sculpture as in the worker. Pale ferruginous compared with rich dark brown in dealate females of the typical form. Described from one female and two workers taken by myself May 25, 1935, near the foot of the Northern Range north of Tunapuna, Trinidad, B. W. I.