Description

The interorbital space is narrower than the upper eyelid; tympanum is distinct, about two third the size of the eye; fingers slender, pointed or slightly swollen at the tips, first not extending beyond second; toes are completely webbed; inner metatarsal tubercle long, conical much like a rudimentary toe; male with vocal slits under the lower jaw; dorsum with numerous scattered small smooth tubercles, sides of body rugose, ventrum smooth.

Color: Dorsum light gray, olivegreen or light brown, sometimes black, with irregular black spots. Thighs posteriorly dark with one or two yellow or white irregular longitudinal stripes; ventrum white, immaculate or with dark speckling or reticulation; vocal sacs light brown.

In its wide range from Arabia to Thailand, this frog is distinguished in several races:

From

Seistan: E. c. seistanica Nikolskii, 1899
Sri Lanka: E. c. typus De Silva, 1958
E. c. fulvus De Silva, 1958
E. c. flavens De Silva, 1958
Northwestern Puinjab, Balochistan & Afghanistan: E. c. microspinulata Khan, 1997.
Arabia: E. c. ehrenbergii Peters, 1863.

For references in the text, see here