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