The Aztec Dancer, Argia nahuana is a common species in many regions of Arizona. In males, the abdominal segment 6 (S6) is normally blue with a black posterior ring and S7 is mostly black (Paulson, 2009). In June 2009, however, one male with unusual coloration was observed and photographed at Bog Tank, Apache. This individual showed extensive black coloration ventrally on S6 and black coloration on S7 that was for the most part limited to the ventral aspect of this segment (see Aztec Dancer page).