Abstract
The dewlap of male anoline lizards is an important component of the mate recognition system. Much attention has focussed on the role dewlap colour plays in the interactions between species of Anolis but little has been paid to the effects of intraspecific variability in this feature. Patterns of intrasubspecific variability in this feature are described for several subspecies of Anolis distichus and A. brevirostris. In most cases variability in dewlap colour appears unrelated to the amount of electrophoretic variability and the level of population differentiation, although there is some evidence for large scale geographic subdivision within three of the taxa examined. Female choice and the implications for various species concepts are discussed.
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