Resurrection of Cope, 1864 from synonymy with Hallowell, 1856 (Squamata, Dactyloidae).

In this study, based on a morphological analysis, the resurrection of the name Cope 1864, is proposed for populations from the Yucatán Peninsula (Campeche, Yucatán, and Quintana Roo, Mexico, and Belize), formerly referred as Hallowell, 1856. differs from by its mean snout-vent length and number of gorgetal scales in males, in tibia length and head width in females, and dorsal and ventral scales for both sexes. In addition, has a small dewlap of similar size between males and females, whereas in males have a dewlap much larger than that of the females. These characteristics allow to be identified within the complex. In this study, a description of the characteristics of the hemipenis is also provided, and its importance in the taxonomy of is discussed.