Pseudophilautus nanus (Günther 1869)

Adult male, 34.8 mm SVL. Elongated body. Head convex dorsally. Snout angle about 102 degrees (category 6 of Manamendra-Arachchi and Pethiyagoda 2005), oval in lateral profile, with rounded canthi and concave lores. Interorbital region flat, internarial region concave. Tympanum discernible, oval, obliquely-oriented, with prominent supratympanic fold. Vomerine teeth present (about 10 small teeth on the vomerine ridge). Lingual papilla absent. Supernumberary tubercles present on palm and sole. Calcar absent. No lateral dermal fringe on fingers. Toes webbed medially. Tarsal fold and tubercle are lacking. A few glandular warts are present on the dorsal and lateral regions of the snout, interorbital area, side of the head, and the dorsum. Throat and chest are granular and smooth, while the belly is granular and rough, and the area around the vent is granular. Upper flank has glandular folds. Lower flank is granular. Males have nuptial pads (pale yellow in preservative) on the prepollices and internal vocal slits (Manamendra and Pethiyagoda 2005).Coloration in alcohol: Yellowish light brown head and body with dark brown patches. Dark interorbital bar. Canthal edges and tympanic region brown. Loreal region pale brown. Upper lip pale yellow. Flank yellowish light brown with dark brown patches. Limbs crossbarred dorsally and laterally. Throat pale yellow with light brown patches; throat margins, chest, belly, underside of thigh, and webbing are pale yellow (Manamendra and Pethiyagoda 2005).Designated as the lectotype (as Polypedates nanus) by Bossuyt and Dubois (2001), this specimen is the largest of four in the BHNM collection (Manamendra and Pethiyagoda 2005). A drawing of this specimen was shown in Günther's (1869) publication describing the species, according to Manamendra and Pethiyagoda (2005).

Pseudophilautus nanus was endemic to Sri Lanka and was only known from the general type locality "southern Ceylon". The exact habitat that this species required is not known (Stuart et al. 2008).

This species is known only from the type series. It has not been rediscovered despite extensive searches and is presumed extinct. Breeding is believed to have been through direct development, as is the case for other members of the genus Pseudophilautus (Stuart et al. 2008).

The exact reason for the decline of this species is not known, but it is believed that habitat loss led to its population decrease and eventual extinction (Stuart et al. 2008).

Philautus nanus és una espècie extinta de granota que va viure a Sri Lanka.

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Pseudophilautus nanus Pseudophilautus generoko animalia da. Anfibioen barruko Rhacophoridae familian sailkatuta dago, Anura ordenan.

Pseudophilautus nanus là một loài ếch đã tuyệt chủng trong họ Rhacophoridae. Chúng là loài đặc hữu của Sri Lanka.