Leptomyrmex fragilis valid Indonesia (Aru Is). Indomalaya.
Smith, F. 1859a. Catalogue of hymenopterous insects collected by Mr. A. R. Wallace at the islands of Aru and Key. [part]. Journal and Proceedings of the Linnean Society of London. Zoology 3:132-158.   128687

Leptomyrmex fragilis femorata synonym of Leptomyrmex fragilis New Guinea (Indonesia). Australasia.
Santschi, F. 1932d. Résultats scientifiques du voyage aux Indes orientales néerlandaises de LL. AA. RR. le Prince et la Princesse Léopold de Belgique. Hymenoptera. Formicidae. Mémoires du Musée Royal d'Histoire Naturelle de Belgique (2)4:11-29.   128404

Leptomyrmex fragilis maculata synonym of Leptomyrmex fragilis New Guinea (Papua New Guinea). Australasia.
Stitz, H. 1938. Neue Ameisen aus dem indo-malayischen Gebiet. Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin 1938:99-122.   129032

Leptomyrmex fragilis melanoticus obsolete combination New Guinea (Papua New Guinea). Australasia.
Wheeler, W. M. 1934c. A second revision of the ants of the genus Leptomyrmex Mayr. Bulletin of the Museum of Comparative Zoology 77:69-118.   130252