Rhacophorus, Kuhl and Van Hasselt, 1822

Herlambang, Alamsyah Elang Nusa, Sabinhaliduna, Efendi, Trilaksono, Wahyu, Anita, Syahfitri, Riyanto, Awal, Hamidy, Amir, Krone, Isaac, Amini, Sina, Méndez, María José Navarrete, Herr, Mark & Mcguire, Jimmy A., 2025, Taxonomic Reassessment of an Enigmatic Flying Frog (Amphibia: Rhacophoridae) from Sangihe Island, Indonesia, Zootaxa 5636 (1), pp. 121-143 : 132

Current key to the endemic species of Rhacophorus occurring on Sulawesi and its adjacent islands

1a. Bony ridges on the dorsal area of the head present........................................................... 2

1b. Bony ridges on the dorsal area of the head absent............................................................ 3

2a. Presence of four strong and pointed bony ridges on the dorsum of the head................................. R. georgii

2b. Low U-shape bony ridges filled with bony grains on the intraorbital region, and one above each tympanum..................................................................................................... R. rhyssocephalus

3a. Fingers half webbed................................................................................... 4

3b. Finger less than half webbed................................................................... R. edentulus

4a. Presence of tubercles on cloaca.................................................................. R. boeadii

4b. Absence of tubercles on cloaca................................................................. R. monticola