File:De Andrade 1999 Cephalotes OCR Cephalotes-brevispineus.jpg

de Andrade, M. L.; Baroni Urbani, C. 1999. Diversity and adaptation in the ant genus Cephalotes, past and present. Stuttgarter Beitrage zur Naturkunde Series B (Geolgie and Palaontologie). 271:1-889. (page 240, figs. 14A, 99 worker described)