FIGURE 7 in Morphological and genetic evolution in eastern populations of the Macrhybopsis aestivalis complex (Cypriniformes: Cyprinidae), with the descriptions of four new species

FIGURE 7. Proposed phylogenetic relationships among various species/lineages recognized in the Macrhybopsis aestivalis complex of eastern North America. Not all species in the complex were evaluated. One study is based on morphological characters (Eisenhour 2004 [A]), whereas the other two studies are based on allozyme variation. Underwood et al. (2003 [B]) focused on western diversity (SB = Sabine, BZ = Brazos, PC = Pecos River, SM = San Marcos River); and Mayden & Powers (2004 [C-G]) mostly involved eastern lineages, excluding Colorado River (CR) and Guadalupe River (GR). In Mayden & Powers (2004) different distances were examined, as well as parsimony: C = Edwards and Cavalli-Sforza Edwards Chord distances; D = Prevosti and Rogers distances; E = Cavalli-Sforza Edwards Arc and Modified Rogers distances; F = Fitch Generalized Parsimony with coded characters.