The ants collected by the American Museum Congo Expedition. Wheeler, W. M. Bulletin of the American Museum of Natural History 1922 45 39 269 urn:lsid:biosci.ohio-state.edu:osuc_concepts:180365 Insecta Formicidae Crematogaster Animalia Crematogaster brunneipennis acaciae victoriosa Santschi Hymenoptera 152 Arthropoda variety brunneipennis acaciae victoriosa  Numerous workers from Zambi (Bequaert), "nesting in a tree trunk." The typical C. acaciaewas originally taken by Keller in Somaliland in the swollen spines of acacias. Concerning one of the other varieties ( generosa Santschi), Santschi writes me as follows: "I received from Mr. G. Arnold of the Rhodesian Museum under the name of C. brunneipennis Ern. Andrevariety omniparens Forelsome workers which differ only in their deeper color from what I have called acaciae variety generosa. The female of the latter form is very close to that of brunneipennis Ern. Andr6, but the wings are even darker. I believe that brunneipennisshould be regarded as a subspecies of C. acaciae." That Santschi is correct in regarding both forms as cospecific is proved by a comparison of two cotype workers of brunneipennisfrom Sierra Leone (Mocquerys), sent me by Andremany years ago, with a cotype of received from Forel. Andreworkers are smaller, with longer antennal scapes, smoother and more polished thorax, with somewhat more circular and less cordate petiole, smaller and more slender and more pointed epinotal spines, and darker gaster and head, but the resemblances are so close in other respects that I cannot regard the differences as more than subspecific. As brunneipennishas priority of publication, acaciae must be reduced in rank and not brunneipennis, as Santschi supposes. Whether omniparensis to be retained as a distinct subspecies or is to be attached as a variety to acaciae, I am unable to determine.