Tuesday, May 8, 2018

[Herpetology • 2018] Pulchrana fantastica • A New Species of the Genus Pulchrana Dubois, 1992 (Amphibia: Ranidae) from Sumatra, Indonesia


Pulchrana fantastica 
Arifin, Cahyadi, Smart, Jankowski & Haas, 2018

RAFFLES BULLETIN OF ZOOLOGY. 66;  
photo: Ganjar Cahyadi 

Abstract
 We describe a new species of Pulchrana from the island of Sumatra, in western Indonesia. Pulchrana fantastica, new species, is currently only known from Aceh and Sumatera Utara provinces. It is related to P. siberu and P. centropeninsularis as inferred from morphological similarity and phylogenetic relationships, estimated from DNA sequences. It can be diagnosed by the following unique combination of characters: (1) SVL adult males 40.32–45.19 mm; (2) males have large humeral glands on the anteroventral surface of brachium, nuptial pads absent; (3) dorsal skin finely granular to granulated, with or without asperities at the tip of granules; (4) webbing formula: I(1 ― 1–11/2)II(1/2 ― 2)III(1 ― 2–21/3)IV(2–21/3 ― 1)V; (5) straight dorsolateral stripes, thin, continuous, anteriorly confluent at snout, posteriorly interconnected by a series of spots; (6) middorsum in adults black with light medial line or combination of spots and line, black without marking in juveniles; (7) dense cream or yellow to orange spots on flanks, and dorsal side of limbs, spots non-uniform in shape; (8) venter greyish or brown, with small light dots on throat and chest, sometimes reaching abdomen; (9) iris background black, lower part with dense orange stippling, upper region with orange reticulation with gold in the middle, pupil encircled with solid orangegolden line; (10) upper and lower lip grey or brown with cream or yellow spots. We also report the presence of P. centropeninsularis from Sumatra; a species previously known only from a single locality in the Malay Peninsula; and discuss the biogeographic implications of this significant range extension. 

Key words. molecular systematics, morphology, new species, Pulchrana signata Complex, Sumatra, taxonomy

 Pulchrana fantastica, new species, MZB.Amph.28894, adult male, paratype, Aceh




Fig. 5. Plates comparing the three closely allied Sumatran Pulchrana species
(a) Pulchrana fantastica, new species, MZB.Amph.28894, adult male, paratype, Aceh; (b) P. fantastica, new species, MZB.Amph.28943, juvenile, Aceh; (c) P. centropeninsularis, adult male, Jambi; (d) P. siberu, female, Pagai Selatan.
Photos by U. Arifin (a, b, d); A. Jankowski (c).

Fig. 4. Geographical distribution of Pulchrana centropeninsularis (white circles O), P. fantastica, new species (black triangles △), and P. siberu (red stars ★).
Locality information: Mane (1); Taman Buru Linge Isaq (2); Taman Nasional Gunung Leuser (3); Bandar Baru (4), Lakum Forest Reserve & Kuala Gandah, Pahang (5); Bukit Tigapuluh (6); Hutan Harapan (7); Siberut (8); Sipora (9); and Pagai Selatan (10).
Type locality for each species indicated by arrow. Map was prepared using GeoMapApp (Ryan et al., 2009).


Pulchrana fantastica, new species 
Splendid Stream Frogs (recommended common English name);
Katak Elok (Bahasa Indonesia)
Hylarana cf. siberu (Montane NW Sumatra [Brown & Siler, 2013])
Hylarana sp. Sumatra (Chan et al., 2014)

Diagnosis. The following unique combinations of characters distinguish Pulchrana fantastica, new species, from its congeners: (1) a medium size frog, SVL adult males (n = 12) 40.3–45.2 mm; (2) males with large humeral glands (3.2–4.3 mm) on anteroventral surface of brachium, paired internal subgular vocal sacs, nuptial pads absent; (3) dorsal skin finely granular to granulated, with or without keratinised white asperities at tip of each granule (Fig. 2); (4) webbing formula: I(1 ― 1–11/2)II(1/2 ― 2)III(1 ― 2–21/3)IV(2– 21/3 ― 1)V; (5) dorsolateral stripe, thin (0.7–0.9 mm), orange, continuous, anteriorly confluent and posteriorly interconnected by spots; (6) middorsum black with orange line or combination of spots and line in the center, variable in number and length of the line and spots, black without marking in juveniles; (7) dense spots on flanks and dorsal surface limbs, cream or yellow to orange, shape of spots elongated or circular, variable in size; (8) skin of venter smooth, greyish or brown with small light dots on throat and chest, occasionally extending posteriorly to abdomen; (9) iris background black, dense orange stippling ventrally, orange reticulation dorsally, golden centrally, with orange-golden line encircling pupil; (10) upper and lower lip grey or brown with cream or yellow spots (upper lip: 3–7; lower lip: 2–5).

Etymology. The specific epithet is nominative feminine derivative of the Greek phantastikós. We apply this adjective with a contemporary spelling and an implied meaning of “being beyond imagination” with reference to the extraordinary beauty of this species.

Range. Pulchrana fantastica, new species, is currently known from Aceh Province (Marpunge, Taman Nasional Gunung Leuser; Taman Buru Linge Isaq; Mane) and Sumatera Utara Province (Bandar Baru, Langkat) at an elevation between 450–1,065 m (Fig. 4).


Umilaela Arifin, Ganjar Cahyadi, Utpal Smart, André Jankowski and Alexander Haas. 2018. A New Species of the Genus Pulchrana Dubois, 1992 (Amphibia: Ranidae) from Sumatra, Indonesia. RAFFLES BULLETIN OF ZOOLOGY. 66; 277–299.
lkcnhm.nus.edu.sg/app/uploads/2018/01/66rbz277-299.pdf
facebook.com/photo.php?fbid=10213395142810663
Researchgate.net/publication/324909977_A_new_species_of_the_genus_Pulchrana_from_Sumatra_Indonesia



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