What minute scale details are reliable markers for distinguishing closely related whiptail species?

Answer

Number of longitudinal scale rows or pattern on the lower jaw

While coloration can be highly variable and shift dramatically based on geography and population, it is not always the most dependable feature for accurate species identification. When attempting to distinguish between closely related species whose differences are subtle, focusing on minute details proves more reliable. These dependable markers include analyzing the exact number of longitudinal scale rows present or examining the specific pattern of scales located on the lower jaw.

What minute scale details are reliable markers for distinguishing closely related whiptail species?
morphologycharacteristiclizardwhiptail