Kalophrynus interlineatus (Blyth, 1855)

Deuti, Kaushik, Ray, Sukumar, Bag, Probhat & Dey, Swapan Kumar, 2017, Amphibians of the Duars area of Northern West Bengal, Records of the Zoological Survey of India 117 (3), pp. 221-241 : 226-227

5. Kalophrynus interlineatus (Blyth, 1855)

2000. Kalophrynus orangensis Dutta, Ahmed and Das, Hamadryad. , 25 (2): 67-74.

Common Name: Orang Sticky Frog (English).

Specimensexamined: 1ex:A10402fromBongbasti, Chilapata forest, Jalpaiguri district , West Bengal (26°35’834”N, 89°23.879”E) collected on 13.x.2006. The measurements of the frog collected are given below in millimeters: dilated. Toes are half webbed, toe tips are slightly rounded. Webbing reaches tips of all toes as a narrow sheath except on fourth toe where it is to the medial tubercle. A pointed inner and an oval outer pedal tubercle are present on the toes. Upper side is granular. Abdomen is coarsely granular .

Colour: Upper parts pale brown with a dark-edged bright yellow vertebral stripe, starting from tip of the snout and terminating near the vent, where it becomes less distinct. Two black-edged broad dark brown lateral patches, commencing from behind the eyes to the groin. Upper surfaces of fore and hind limbs is pale brown and not banded, belly and abdomen whitish.

Habitat: Under herbaceous moist vegetation within evergreen forests and wet grasses in grasslands, which they can climb from 0.3-1.0 meter above the ground especially when the ground gets water-logged.

Remarks: So far known only from Chilapata Reserve Forest in Jalpaiguri district of northern West Bengal (Paul,

Size: 35-38 mm (snout-vent length).

Distinguishing features: A small-sized, stocky, elongated frog with a narrow waist. Head is wider than long and with a pointed snout projecting beyond the lower jaw. Eyes are small with a circular pupil. Inter-orbital region is flat. Ear-drum is distinct with a distinct supra-tympanic fold from posterior angle of eye to base of fore limb. Fingers are without webbing, the finger tips are rounded. Fleshy tubercles are present on the palm. Toes are webbed at the base. Toe tips are rounded. Inner and outer pedal tubercles are present. Upper parts are granular with glandular skin. Abdomen and inner side of thighs are coarsely granular.

Colour: Upper parts deep reddish brown or creamish. Sides of head and body darker than upper parts. A deep brown inverted Y-shaped mark begins from between the eyes, bifurcating on shoulder and extending diagonally on both sides of the vent to the hindlimbs. Limbs with dark bars and blotches. Belly yellowish-cream.

Habitat: Found in grasslands adjacent to forest or close to trees bordering grassland.

Remarks: So far known only from Chilapata Reserve Forest in Jalpaiguri district of northern West Bengal ( Paul, Biswas and Deuti, 2007b). Elsewhere from Orang National Park in Darrang district of Assam ( Dutta, Ahmed and Das, 2000) as Kalophrynus orangensis which was later synonymised under Kalophrynus interlineatus by Ohler and Grosjran, 2005.