Data from: Revision of the Crematogaster ranavalonae-group in Asia, with description of two new species (Hymenoptera: Formicidae)

The Asian members of the Crematogaster ranavalonae-group are revised and twelve species, including two new species, C. hashimi sp. nov. and C. imperfecta sp. nov. are recognized. The members are distinguished from other Asian Crematogaster fauna bysmooth, shiny bodies with short appressed hairs on the surface. Crematogaster sikkimensis Forel, 1904 is raised to species level, and the following new synonyms are proposed: C. aberrans Forel, 1892 = C. aberrans assumuthi Forel, 1913 syn. nov. = C. aberrans inglebyi Forel, 1902 syn. nov. = C. soror Forel, 1902 syn. nov.; C. ebenina Forel, 1902 = C. ebenina corax Forel, 1902 syn. nov.. A key to the species based on the worker caste is given.