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Brief Summary

    Scinax perereca: Brief Summary
    provided by wikipedia

    Scinax perereca is a species of frog in the family Hylidae. It is found in Argentina, Brazil, and Paraguay. Its natural habitats are subtropical or tropical moist lowland forests, freshwater marshes, intermittent freshwater marshes, heavily degraded former forest, ponds, and canals and ditches. It is threatened by habitat loss.

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    d47137a0213a3a7c1e5ac821262f02f9
    Brief Summary
    provided by IABIN
    Diagnoses A médium sized species (males 34.0-38.5 mm snout-vent length), body moderately robust, head longer than wide, snout nearly rounded in profile and subacuminate in dorsal vim canthus rostralis straight; in life iris copper colored, and surfaces of thighs and hidden portions of shank with yellow flash color on black background.
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    Museo Nacional de Historia Natural
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    Esteban O. Lavilla
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    Diego Arrieta
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    IABIN
    ID
    170_plic_pcfcore_briefDescription

Comprehensive Description

Distribution

    Distribution
    provided by IABIN
    At moment known from Province of Misiones, Argentina and Rio Grande do Sul, Paraná and São Paulo states, Brazil.
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    Museo Nacional de Historia Natural
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    Esteban O. Lavilla
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    Diego Arrieta
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    IABIN
    ID
    170_plic_pcfcore_distribution

Diagnostic Description

    Diagnostic Description
    provided by IABIN
    Description of holotype Body moderately robust; head as wide as the body, longer than wide; snout moderate-sized, nearly rounded in lateral view and subacuminate in dorsal view; nostrils directed laterally; canthus rostralis distinct, straight; loreal region slightly concave; eye large, protruding; tympanum medium, nearly rounded, slightly larger than the adhesive disk of the 3th finger; supratympanic fold weak; vocal sac single, externally expanded; vocal slits present; tongue large, shallow notched posteriorly, barely free be hind; vomerine teeth in two straight series, little separated and between choanae; choanae small, slightly elliptical and obliqua. Forearm moderately robust, arm slender; fingers medium sized; subarticular tubercles single, conical on 1st and 2nd fingers, rounded on 3th and 4th fingers; supernumerary tubercles on 1st finger; outer palmar tubercle elevated, bifid; inner palmar tubercle elliptical; finger disks large, nearly rounded, wider than long a vestigial webbing between fingers; large, unpigmented nuptial excrescences on inner surfaces of thumb. Legs moderately robusta toes moderately longe inner metatarsal tubercle, ovoid; outer metatarsal tubercle nearly elliptical; subarticular tubercles single, conical; supernumerary tubercles small; toe disks elliptical, wider than long, nearly as large as those of the fingers. Skin on dorsum and throat smooth; that on belly and undersurfaces of thighs granular. Color in preservative of the Holotype.-Dorsum brown with dark brown spots; throat and venter white; white spots present on upper surfaces of thighs and hidden portions of shank; tíbia with three dark brown transversa stripes. Color in Life of the Holotype: Dorsum greenish yellow with dark gray spots, dark gray in verted triangular interocular spot; venter yellow; throat pink; tympanum brown; íris copper with black bar, black line across canthus rostralis, eye, and supratympanic fold; tíbia with three distinct dark gray transversal stripes; anterior and posterior surfaces of thighs and hidden portion of shanks with irregular spots yellow "flash" color on black background. Measurements o f the Holotype: snout-vent length 35.5; head length 11.8; head width 10.9; eye diameter 3.6; interorbital distance 3.6; eye-nostril distance 3.4; tympanum diameter 2.1; thigh length 17.0; tibia length 18.0; foot length 15.4. Variation In preservative, dorsum gray to greenish-gray; most specimens with inverted triangular interorbital spot, some specimens with W-shaped, one individual with two dots in the interorbital ares; some specimens with a pair of inverted dorsolateral parentheses, some with indistinct light dorsum pattern. Number and size of supernumerary tubercles variable. Measurements (mean, range, SD) of eighteen males, followed by one female in parentheses: snout-vent length 36.61,34.0-383,1.20 (42.2); head length 12.36,11.4 13.7,0.60 (14.0); head width 11.51,10.9-12.4, 0.46 (13.2); eye diameter 3.96, 3.6-4.4, 0.28 (4.4); interorbital distance 3.96, 3.6-4.4, 0.29 (5.0); eye-nostril distance 3.77, 3.4-4.4, 0.24 (4.1); tympanum diameter 2.12, 1.9-2.4, 0.15 (2.6); thigh length 17.19, 15.9-18.7, 0.65 (20.1); tibia length 18.59,17.8-19.9, 0.64 (20.0); foot length 15.99, 15.4-16.8, 0.58 (18.3). Larval morphology The description and measurements are based on tadpoles (n = 16) in stages 36-37 (Gosner, 1960). Description: Mean total length 31.8 ± 1.8 mm. In lateral view, body triangular, globose-shaped and oval in dorsal and ventral views; body length approximately 28% (25-31%) of total length. Snout rounded in dorsal view; nostrils small, rounded, located dorsally, nearer to eyes than snout, visible in lateral view; internostril distance equivalent to interorbital distance; spiracle single, sinistral, short, not projected, located at the beginning of posterior third of body, posterodorsally orientated; spiracle inner wall present as slight ridge and spiracle lateral wall end anterior to the insertion of the medial wall; anal tube short, dextral, attached to ventral. Tail musculature tapering gradually to a pointed end; dorsal. Fin with ascendant edge in the beginning at anterior tail third and descendant until the end; dorsal and ventral . Fins beginning at posterior third of body, both arched; tail tip narrowly rounded. Oral disc anteroventral, its width approximately 45% (37-51%) of body width. Marginal papillae variable in number and arrangement: some specimens present them in most of oral disc, except for a small part on upper labium, whereas others present marginal papillae only on lower labium, extending a little to lateral portion; marginal papillae located at lower labium are more elongate than those rounded at upper labium. Submarginal papillae rounded, located unordered in the lateral portion, slightly advancing to lower labium; labial tooth row formula 2(2)/3(1); jaw sheath strong and serrated, upper jaw arched with slight projection in the median portion and lower jaw approximately V-shaped, with keratin spin located in both ends of the mandible, oriented to its interior. Color in 5% formalin: Body translucent with few brown dots on dorsum. Tail with yellowish musculature and transparent fins. Nostrils edge with a brown points row. Lower jaw white in inferior part and black in superior one. Legs yellowish.
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    Museo Nacional de Historia Natural
    author
    Esteban O. Lavilla
    editor
    Diego Arrieta
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    IABIN
    ID
    170_plic_pcfcore_scientificDescription

Molecular Biology

    Molecular Biology
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    pepitídeos
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    170_plic_pcfcore_molecularData

Conservation Status

    Conservation Status
    provided by IABIN
    LC. Least Concern.
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    Museo Nacional de Historia Natural
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    Esteban O. Lavilla
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    Diego Arrieta
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    IABIN
    ID
    170_terms_threatStatus