Oreobates sanderi, (PADIAL ET AL., 2005)
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publication ID |
https://doi.org/ 10.1111/j.1096-3642.2007.00372.x |
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persistent identifier |
https://treatment.plazi.org/id/03EF8790-FFC9-FFAB-75C7-718AFB38FBC4 |
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treatment provided by |
Felipe |
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scientific name |
Oreobates sanderi |
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OREOBATES SANDERI (PADIAL ET AL., 2005) View in CoL
Ischnocnema sanderi Padial et al., 2005
Oreobates sanderi – Caramaschi & Canedo (2006) ( Fig. 3N)
Ischnocnema sanderi Padial, Reichle, & De la Riva, 2005: 187 . Holotype: CBF 5385 View Materials . Type locality: ‘Arroyo Bilunto (14°38′24″S, 68°31′45″W), Chunirumi Valley GoogleMaps , Bilunto Mountains, Área Natural de Manejo Integrado Madidi, near Santa Cruz de Valle Ameno, Province Franz Tamayo, Departament La Paz, Bolivia, 1800 m’ ( Fig. 4 View Figure 4 ).
Diagnosis: A medium-sized Oreobates (SVL of adults, 28–38 mm) characterized as follows: (1) skin of dorsum granular, with round keratinized granules and small, sparse, low, flat warts, only some of them slightly enlarged; warts on flanks slightly larger than those of dorsum; occipital W-shaped fold and/or x-shaped fold on mid-dorsum; venter smooth; posterior surfaces of limbs smooth, groin areolate; discoidal fold present; dorsolateral folds weak; large postrictal glands; (2) tympanic membrane and annulus distinct, both with length of about half of the eye length; supratympanic fold weak, short; (3) head large, as wide as long; snout short, round in dorsal and lateral views; canthus rostralis slightly convex or sinuous in dorsal view, round in profile; (4) cranial crests absent; upper eyelid covered by small warts; (5) dentigerous process of vomers large, oblique, almost in contact, situated posteromedial to choanae; (6) males with vocal slits and nuptial pads; (7) hands with long and slender fingers, first finger longer than second; subarticular tubercles large, prominent, round to conical; supernumerary tubercles large or small, round to conical, smaller than subarticular tubercles; tips of fingers III and IV round, not enlarged, lacking circumferential grooves and ungual flap; lateral fringes and keels weak; (8) ulnar tubercles absent; (9) no tubercles on heel or tarsus; (10) inner metatarsal tubercle ovate, prominent; outer metatarsal tubercle smaller, round, prominent; supernumerary tubercles conspicuous, conical; (11) toes long and slender (foot length 50% of SVL), lateral fringes weak or absent, webbing absent; tips of toes round, with ungual flap not indented; (12) axillary glands present; (13) dorsal coloration pale brown to dark brown with cream flecks, sometimes with W-shaped occipital and/or mid-dorsal X-shaped dark marks, or a pair of cream dorsolateral stripes and a short longitudinal sacral stripe; throat and chest cream with fine brown mottling; belly cream with brown mottling or reticulations on anterior margin.
Among the medium-sized and large species of Oreobates , O. sanderi is most similar to O. granulosus , from which it can be distinguished by having conspicuous supernumerary tubercles (weak or absent), shorter feet, FL/SVL = 50% (50–60%), and incipient dorsolateral folds (absent). It can be distinguished from small species of Oreobates by the combination of keratinized granules on dorsum, and fingertips round and not enlarged.
Remarks: The original description and diagnosis are accurate ( Padial et al., 2005a). For distinguishing this species from other members of Oreobates see the operational key below. Its advertisement call is unknown.
Distribution: Oreobates sanderi inhabits the humid montane forests and cloud forests of the Andean slopes of northern Bolivia, in Department La Paz, at elevations of 1300–2000 m a.s.l. ( Figs 4 View Figure 4 , 5 View Figure 5 ). Two specimens from Department Puno, Peru, one from Abra de Maruncuna, 10 km south-west of San Juan del Oro, 1650 m a.s.l. ( KU 206101 View Materials ), and one from Juliaca (AMNH 6063; locality in error given that Juliaca lies in the dry Altiplano – this specimen was probably sent to Juliaca from somewhere else in the humid montane forests of Department Puno, Peru), are tentatively assigned to this species.
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