Key to Stigmatomma with eleven-segmented antenna

This worker key is based on: [[Media:Bharti, H., Rilta, J.S. 2015. A new species and a new record of the ant genus Stigmatomma from India.pdf|Bharti, H. and Rilta, J.S. 2015. A new species and a new record of the ant genus Stigmatomma Roger (Hymenoptera: Formicidae) from India. Sociobiology. 62:506-512. (DOI: 10.13102/sociobiology.v62i4.364).]]

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 * Stigmatomma

1

 * Anterolateral corners of head acutely toothed/Genal teeth present (Fig A), mesosoma smooth and shiny (Fig C) (Neotropical Region: Dominican Republic, Greater Antilles, Lesser Antilles, Type locality-Puerto Rico) . . . . . Stigmatomma falcatum


 * Anterolateral corners of head not toothed/Genal teeth absent (Fig B), mesosoma variously sculptured from sparsely to densely punctuate (Fig D) . . . . . 2

2

 * In full face view, head trapezoidal in shape, masticatory margin of mandible with 5 set of paired teeth; in profile view (Fig E), posterolateral corner of propodeum angulate, and anterodorsal corner of petiolar node bluntly angled; subpetiolar process trapezoidal (Fig G) (Palearctic Region: Japan; Oriental Region: China, Type Locality- Taiwan) . . . . . Stigmatomma sakaii


 * In full face view, head rectangular in shape, masticatory margin of mandible with 4 set of paired teeth; in profile view (Fig F), posterolateral corner of propodeum and anterodorsal corner of petiolar node rounded; subpetiolar process oblique (Fig H) (Oriental Region: India) . . . . . Stigmatomma xui