Description

Slim body, SVL = 29.04 – 34.65 mm; vomerine teeth reduced to very small, near the edge of choanae; snout rounded, slightly shorter than internarial distance (snout/IN = 0.0705 – 0.889); loreal region slightly concave; nostril closer to the tip of the snout than to the eyes; tympanum is less clear, 1 / to 1 / of the eye diameter (TY/EY = 0.279 – 0.437). The disk of 4 2 the fingers is slightly smaller than the tympanum; outer fingers half webbed; toes webbed to the disk of the third and fourth; penultimate phalanx of fourth toe is free; inner metatarsal small; the heel reaches the tip of the snout or farther (TL/SVL = 0.522 – 0.594). Dorsum is light green to dark green, with black or yellow dots; large brownish-red spots on the head up to the posterior part of the body; a yellowish-white thigh with a narrow green line; the ventral portion is yellowish-white, granularious; there is a fold from eyes to shoulders.

Habitat

Specimens of R. edentulus were collected from the leaves of Pandanus sp. and Curculigo sp., and on the limbs of Diplazium sp. at 0.5 – 2 m above the water surface and 0.1 – 2 m away from the water flow. The species was found to be active at 19 – 23°C and 73 – 94% humidity. Like many other tree frogs (Rhacophoridae), this species lays eggs in trees. Putri et al. (2018) found an individual of R. edentulus from the Lake Kalimpa ’ a region that spawned on Araceae leaves.

Remarks

This species is distributed in northern, central, southwestern and southeastern Sulawesi (Iskandar and Tjan 1996). Van Kampen (1923) also reported the presence of this species in the Loka area, Bone Mountains at an elevation of ~ 500 m asl, and the Bulawa Mountains at ~ 1200 m asl, Totoiya Valley at ~ 500 m asl, Tomohon, Rurukan and Bua Praeng. The species was also reported in Nantu Gorontalo Wildlife Reserve at 600 – 800 m asl (Khairunnisa 2014), Mekongga Mountains 900 – 1500 m asl (Kurniati 2015), and in the Lore Lindu National Park area at an elevation of> 1000 m asl (Wanger et al. 2011).

In our study, this species was found distributed throughout primary forest (plots 1 and 3 – 5) and in minimally disturbed primary forest (plot 9) at an elevation of 1650 – 1700 m asl. This species has been considered a ‘ voiceless species ’, because their call is rarely heard. It is assumed that their call is obscured by the sound of insects that is of a higher frequency than the low non-harmonic average frequency of R. edentulus males (Kurniati 2015).