Microhyla rubra is a species of narrow-mouthed frog

Microhylidae

Microhylidae is a geographically widespread family of frogs. There are 413 species in 69 genera and nine subfamilies, which is the largest number of genera of any frog family.-Description:...

 found in India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

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Description

Habit stout. Snout rounded, a little shorter than the diameter of the orbit ; interorbital space broader than the upper eyelid. Fingers moderate, first much shorter than second ; toes moderate,
one-third webbed ; tips of fingers and toes not swollen ; subarticular tubercles very distinct ; two rather large, oval, compressed, very prominent metatarsal tubercles, outer somewhat larger than inner.
The tibio-tarsal articulation reaches somewhat beyond the shoulder, never to the eye. Skin smooth. Reddish brown above, sides darker; a dark brown line from the tip of the snout through the eye along the side of the back to the groin ; a dark brown mark across the thigh, beginning on the loin ; limbs with more or less distinct dark cross bars ; sometimes a dark X-shaped marking on the anterior portion of the back, commencing between the eyes ; beneath whitish, immaculate or with a few brown dots on the
throat. Male with a subgular vocal sac, and the throat black.

From snout to vent 1.2 inches.
Southern India and Sri Lanka.