Sumaterana crassiovis

Description. Specimens were assigned to Sumaterana crassiovis comb. n. based on comparison of material from Kabupaten Kerinci. Sumaterana crassiovis comb. n. is described by the following combination of characters: a medium sized species, SVL in males 30.03 - 48.87 mm, females 40.98 - 83.99 mm; head width subequal to head length; snout rounded, obtusely pointed in dorsal view, slightly protruding in lateral view; nostril closer to snout than to eye; vomerine teeth present, in oblique groups, between choanae; tongue lanceolate; loreal area deeply concave; canthus rostralis sharp, constricted behind nostrils; rictal ridge present; tympanum distinct, translucent (not transparent); interorbital distance 75.96 - 124.80 % width of upper eyelid in females, 68.26 - 120.31 % width of upper eyelid in males; pineal spot visible; dorsolateral fold absent; supratympanic fold thick, posttympanic fold absent; dorsum finely granulated with scattered tubercles, variable in size and density; flanks coarsely granulated with few tubercles; venter smooth, granulated posteriorly; rear of thigh usually barred as continuation of thigh dorsal pattern; arm slender, lower arm length 19.03 - 24.18 % SVL in females and 19.58 - 25.46 % SVL in males; hand length 31.54 - 36.98 % SVL in females and 31.77 - 39.23 % SVL in males; fingers long, without webbing; fingertips expanded into discs, diamond-shaped, with circummarginal groove; Finger I <Finger II, Finger III longest; fringes present on the outer phalanges of all fingers; subarticular tubercles distinct; width of Finger III disc> width of Toe IV disc; hindlimbs long, articulation of the heels reaching beyond tip of snout, when limb aligned to body; relative femur length 85.39 - 94.32 % tibia length in females, 85.82 - 95.02 % tibia length in males; length of tibia 60.17 - 70.52 % SVL in females, 58.78 - 76.44 % in males; toes slender and long; tip of toe extended into disc, diamond-shaped, with circummarginal grooves; toe lengths: I <II <III <V <IV, Toe V only slightly longer than Toe III; Toes I, II, III, and V fully webbed, webbing of Toe IV usually one phalanx free (I (1 + / - ― 1 + / -) II (1 + / - ― 1 + / -) III (1 + / - ― 2 + / -) IV (2 + / - ― 1 + / -) V); subarticular tubercles distinct; inner metatarsal tubercle distinct, oval, 92.07 - 212.77 % T 4 DW in males and 98.80 - 150.00 % in females; outer metatarsal tubercle absent; tarsal fold absent. (Measurements: Tables 4 - 5).

Sumber: Molecular phylogenetic analysis of a taxonomically unstable ranid from Sumatra, Indonesia, reveals a new genus with gastromyzophorous tadpoles and two new species

Distribution and ecological remarks. This species is widespread on the island of Sumatra, ranging from the northern part of Provinsi Aceh to Kabupaten Pasawaran, the southern part of Provinsi Lampung (Fig. 9). Elevational range 425 - 1545 m a. s. l .. This species is abundant along rocky streams (usually 1 - 5 m wide) in primary or good secondary forest. The inhabited streams are typically rocky with boulders (usually diameter> 1 m) and with rock formations along the stream, water current velocity 0.2 - 1.1 m / s (Fig. 10). Males of this species commonly can be observed perching on rocks or vegetation at the stream banks. Females were rarely observed near the streams. It seems that they approach the streams only during breeding activities. Tadpoles were often found in groups, on rocks in the stream, overflown with water in cascading sections.

Sumber: Molecular phylogenetic analysis of a taxonomically unstable ranid from Sumatra, Indonesia, reveals a new genus with gastromyzophorous tadpoles and two new species