Description Kaloula kalingensis is a round, wide bodied, short headed terrestrial frog. It has a SVL of 36.5 mm. Its palatal ridges are behind its posterior nasal apertures and do not meet medially. These posterior nasal apertures are small and are not concealed by its overhanging jaw. It has a short and truncate snout that is angular and extends very slightly beyond its lower jaw. Its nostrils are lateral and not visible from the dorsal view. Its interorbital distance is larger than the upper eyelid by one and one-half times. The tympanum is distinct and slightly smaller than the eye. An indistinct skin fold begins behind its eye, thickens behind the tympanum and becomes glandular above the arm. Tubercles are prominent on the snout and are scattered between the eyes and mouth, on the flanks, dorsum, and limbs. The skin on the chin, belly, and femur is granular while the skin on the chest is smooth. Its fingers have angular pads at the tips, which are wider than the width of the fingers and the anterior edges are straight or slightly concave. It has distinct carpal tubercles. The toes are small, slightly webbed and have slightly truncate or rounded pads (Taylor 1922).
Diagnosis: K. kalingensis can be distinguished from K. baleata by the shape of finger pads, length of the third finger, presence of tubercles on palm, and size of tympanum (Taylor 1922).
K. kalingensis has a bluish black dorsum, with red markings on the neck, flanks, and limbs. The venter and undersides of the legs are mottled with creamy white and there are cream markings around the vent. The lower eyelid has an opaque, cream colored region. The digits have white tubercles underneath (Taylor 1922).
Males have subgular vocal sacs (Taylor 1922).
K. kalingensis is distributed in the mountains of the Central Cordilleras and Sierra Madres, on northern Luzon Island, and several provinces throughout the Philippines (Diesmos et al. 2004, Brown et al. 2000). It lives mostly in moist tree hollows, in and at the edges of lowland and lower montane forests (Diesmos et al. 2004).
Life History, Abundance, Activity, and Special Behaviors K. kalingensis calls from tree holes, bamboo, and banana plants in areas that are mostly undisturbed (Diesmos et al. 2002; Brown et al. 2000). Calls are heard from 2–5 m above the ground, but also have been heard from logs on the forest floor (Brown et al. 2000). The call varies, ranging from “Bwop!” to “Eeow!”. These notes are loud, tonal and have slight dips in frequency (Diesmos et al. 2002 ).
Trends and Threats The main threat to this species is habitat loss from deforestation, conversion to vegetable farms and real estate development. Only a few protected areas, such as Pulag National Park, house a refuge for this species and the remaining rainforest in the Cordilleras needs increased protection (Diesmos et al. 2004).
Possible reasons for amphibian decline
General habitat alteration and loss Habitat modification from deforestation, or logging related activities Intensified agriculture or grazing Urbanization Habitat fragmentation
Comments The species was first described by Taylor (1922). It was removed from the synonymy of K. baleata (Frost 2011).