S. maravalhas worker (USNMENT00924090: (a, b, c, d, f, g) USNMENT01126226 (e, h, i), SEM images. a Head, full-face view b mandibles c eye d mesosoma and metasoma, dorsal view e mesosoma, lateral view f metasoma, dorsal view g head, papillate integument h mesosoma, integument with dense crystal-like layer i mesosoma, papillate integument with sparse crystal-like layer.