Reticulate collared lizard

Crotaphytus reticulatus is a tan to brown lizard with reticulations covering most of its dorsum, limbs, and tail. Some of these reticulations are filled with black pigmentation. Unlike the rest of the species in the genus Crotaphytus, there is no color difference between males and females of C. reticulatus except during the breeding season. During this time, males develop a bright yellow coloration on their chests. The collars on C. reticulatus are faint and the anterior collar is complete ventrally. The dewlap, or gular area, is a greenish-gray with black pigmentation in the center. The gular area of the female is white to yellow without the black pigmentation in the center. Symmetrical black spots fill in some of the pattern. The ventral surface is white or a cream color. C. reticulatus grows to a total length (including tail) of 41 cm (16 in). It is sexually dimorphic during breeding season. Males have a black collar around the neck, and yellow chest and throat markings. Females develop orange bars along the underside when gravid. Collared lizards have small pockets at the base of the tail and folds of skin above the front legs. Mites and chiggers gather in these areas. C. reticulatus lacks the postfemoral mite pockets present in the rest of the genus. This suggests this genus broke away from the ancestral group first. C. reticulatus has black oral melanin and black femoral pore secretions. The rest of the genus, except C. antiquus, has gray secretions.