[1][2] Pelophryne ingeri is dedicated to the late Robert F. Inger, an American herpetologist who was Emeritus Curator at the Field Museum of Natural History, for his "great contributions to Southeast Asian herpetology, including taxonomy of Pelophryne".

A wide blackish brown band runs from the eye, surrounding the tympanum, and above the arm insertion to the groin.

Another brown band, bordered below by a creamy yellow streak, runs from below the eye and the tympanum backwards to the groin, merging on the flank with creamy venter; the venter has irregular dark brown markings.

[1] The male advertisement call consists of ticking notes, emitted either continuously or in very long series.

[1] Pelophryne ingeri occurs in primary forest at elevations of 240–880 m (800–2,900 ft) above sea level.