Gephyromantis marokoroko Hutter, Andriampenomanana, Andrianasolo, Cobb, Razafindraibe, Abraham and Lambert, 2022

Vences, Miguel, Koehler, Joern, Crottini, Angelica, Hofreiter, Michael, Hutter, Carl R., du Preez, Louis, Preick, Michaela, Rakotoarison, Andolalao, Rancilhac, Lois, Raselimanana, Achille P., Rosa, Goncalo M., Scherz, Mark D. & Glaw, Frank, 2022, An integrative taxonomic revision and redefinition of Gephyromantis (Laurentomantis) malagasius based on archival DNA analysis reveals four new mantellid frog species from Madagascar, Vertebrate Zoology 72, pp. 271-309 : 271

Gephyromantis marokoroko Hutter, Andriampenomanana, Andrianasolo, Cobb, Razafindraibe, Abraham and Lambert, 2022

Gephyromantis marokoroko Hutter, Andriampenomanana, Andrianasolo, Cobb, Razafindraibe, Abraham and Lambert, 2022: 486

Note.

A recently described species from the Northern Central East of Madagascar ( Hutter et al. 2022) that is genetically and morphologically distinct by a reddish iris, gray to whitish vocal sacs and large femoral glands with 7-8 distinct, externally visible gland granules, and a dorsal skin texture consisting mainly of sharp ridges rather than of rounded tubercles (Fig. 11 ). A tibial gland is absent. According to the original description, SVL is 24.0-27.0 mm in males and 23.9-24.6 mm in females. The species is so far only known from several sites near Andasibe: Belakato in Andasibe-Mantadia National Park, Vohimana, Vohidrazana (type locality) and Tavalobe near Vohidrazana. We reanalyzed the call of G. marokoroko to ensure full comparability with the call descriptions of all other Laurentomantis .

Call.

The advertisement call was recorded on 6 January 2016 at Vohidrazana (air temperature 20.4°C; call voucher KU 343230 [CRH 1110]). It consists of a series of short distinctly pulsed notes of variable duration (Fig. 12 ). There is recognizable amplidude modulation within each call, with call energy being greatest at approximately 60% of the call’s duration, with initial notes being the least energetic ones. Within calls, notes are repeated at constant intervals. Each note contains a certain number of clearly separated pulses repeated at an approximate rate of 150-170 pulses/second. Numerical parameters of 3 analyzed calls are as follows (range followed by mean ± standard deviation in parentheses): call duration 557-1203 ms (968.7 ± 357.7 ms); note duration 10-26 ms (17.4 ± 5.0 ms); number of notes per call 12-28 (21.0 ± 8.2); note repetition rate within calls 18.2-19.6 notes/second (18.8 ± 0.6 notes/second); pulses per note 2-5 (3.3 ± 0.9); dominant frequency 2411-2476 Hz (2444 ± 28 Hz), with a second peak of almost equal energy at around 3600-3700 Hz; prevalent bandwidth 1000-5200 Hz. Call repetition rate in short call series (containing 3 calls) approximately 18-20 calls/minute.

Figures

Figure 11. Adult male of Gephyromantis marokoroko (KU 343230) from Vohidrazana in life, in A dorsolateral, B dorsal and C ventral view.

Figure 12. Audiospectrogram and corresponding oscillogram of a 1000 ms section of an advertisement call of Gephyromantis marokoroko recorded on 6 January 2016 at Vohidrazana.