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Dulan Ranga Vidanapathirana

Dulan Ranga Vidanapathirana
Herpetological Foundation of SriLanka

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37
Publications
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Publications

Publications (37)
Article
Full-text available
Ecological and environmental traits can influence avian escape behaviour but most data underpinning our current understanding relates to continental and temperate areas and species. We conducted a phylogenetically controlled comparative analysis of flight-initiation distance (FID) against a variety of environmental, behavioural and life history att...
Article
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Nearly one in every five species of reptiles in the world is threatened with extinction and thus is conservation dependent. In order to develop effective and targeted species conservation strategies, detailed information on their distribution, systematics and ecology are necessary. Information such as the natural history and in-situ reproductive be...
Article
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Warnagala forest complex in Kuruwita, Ratnapura District has a lowland wet evergreen vegetation. A survey was conducted to identify the richness of faunal and floral groups and to identify endemic and threatened species in the area. Line transect surveys were used. A total of 383 species consisting 219 fauna and 164 flowering plants were recorded w...
Article
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A new species of uropeltid snake is described from the Knuckles Conservation Forest, Matale District, Sri Lanka. Rhinophis gunasekarai sp. nov. is superficially most similar to Rhinophis phillipsi in having yellow lines on the dorsum, blotches on the lateral body, and a relatively small tail shield, but it differs from that species in having substa...
Article
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A new species of the endemic scincid lizard genus Lankascincus from the Rakwana hills of Sri Lanka, is described. The new species is distinguished from its congeners by possessing the following combination of characters: maximum SVL less than 35.0 mm, prefrontals in broad contact, seven supralabials, last supralabial scale split, 24 mid-body scale...
Technical Report
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In September 2019, the IUCN/CI Biodiversity Assessment Unit held a workshop to complete IUCN Red List assessments for 169 species of snakes and lizards of the 230 currently (September 2019) described reptile species known from Sri Lanka, as part of the Global Reptile Assessment. Additionally, a preliminary Key Biodiversity Area (KBA) assessment was...
Article
Full-text available
We describe a new species of Dryocalamus based on two specimens collected from the wet zone rainforests of southwestern Sri Lanka. Dryocalamus chithrasekarai sp. nov., is distinguished from congeners by its colour pattern (anterior body with solid white bands and a checkered appearance on the posterior lateral body, with consecutive bands coalescin...
Book
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Sri Lanka’s location, historic and geologic isolation from the continental landmass, topography and climate act to shape its biogeography and biodiversity, including conferring a remarkably high level of endemism, given its close proximity to the mainland. The island hosts several ‘point endemic1 species and even monotypic endemic genera. However t...
Article
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We describe a new species, Aspidura desilvai sp. nov., closely resembling A. trachyprocta and the last addition to the genus A. ravanai, from Knuckles massif, Matale District, of Sri Lanka. The species represents the ninth species of the genus known from Sri Lanka, and is readily distinguished from all other congeners by its colour pattern, the sca...
Article
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The endemic Sri Lanka Drongo Dicrurus lophorinus nests in trees and is known to use the same host tree for several years. Here we describe a previously unknown behaviour of this species, in which it actively eliminates canopy contact between the host tree and adjacent trees, and attempts to reduce the roughness of the main trunk of the host tree to...
Article
Full-text available
We describe a new species, Aspidura ravanai sp. nov., representing the eighth species of the genus known from Sri Lanka. The new species is readily distinguished from all other congeners by its colour pattern, scalation, and genetic distinctiveness. Our molecular results indicated that Aspidura began diversifying in the Miocene approximately 18 Ma,...
Article
Full-text available
A new species of uropeltid snake, Rhinophis roshanpererai sp. nov., is described based on three specimens from Badulla District, Sri Lanka. The new species is distinguished from its congeners by the number of dorsal scale rows and ventral scales, a colour pattern that lacks pale stripes, and by having a very small tail shield with four or three pro...
Article
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A new species of Cnemaspis, Cnemaspis rajakarunai sp. nov. is described and is the fourth rock dwelling species belonging to the genus known from Sri Lanka. The new species is readily distinguished from all other congeners by the following combination of characters: adult snout vent length 36 40 mm; precloacal pores absent, large femoero-precloacal...
Article
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A new species of shrub frog Pseudophilautus dilmah is described from the Central Hills of Sri Lanka. This unique species is distinguished from all the other congeners from a combination of characters; snout rounded in lateral aspect, bluntly pointed in dorsal and ventral aspect, canthus rostralis rounded, vomerine teeth, lingual papilla and nuptial...
Article
Full-text available
A new species of rock dwelling gecko belonging to the genus Cnemaspis is described from Sri Lanka based on a suite of morphological features. The species is the largest of its genus described from Sri Lanka so far (snout-vent length 52-54 mm) and is the second largest of the Western Ghats-Sri Lanka Biodiversity Hotspot. It may be diagnosed in detai...
Article
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Pseudophilautus hypomelas (Günther, 1876), was previously known from the type collection of 14 specimens deposited in the Natural History Museum, London. There has been no record of this species since the original description by Günther in 1876, and subsequently this species was considered extinct. In recent explorations however, the species has be...
Article
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Eight new species of Pseudophilautus (Pseudophilautus bambaradeniyai, P. dayawansai, P. jagathgunawardanai, P. karunarathnai, P. newtonjayawardanei, P. puranappu, P. samarakoon, and P. sirilwijesundarai) were discovered as a result of a survey carried out to study the herpetofaunal diversity with the changes in elevation in the Sripada World Herita...
Article
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Pseudophilautus stellatus (Kelaart 1853) has been rediscovered from the Peak Wilderness, Central Hills of Sri Lanka. The species, till now known only from its lost holotype, was the first shrub frog described from Sri Lanka, and had not been reported since then. It was thought to have become extinct for nearly 157 years, being the amphibian species...
Article
Full-text available
Eight new species of Pseudophilautus (Pseudophilautus bambaradeniyai, P. dayawansai, P. jagathgunawardanai, P. karunarathnai, P. newtonjayawardanei, P. puranappu, P. samarakoon, and P. sirilwijesundarai) were discovered as a result of a survey carried out to study the herpetofaunal diversity with the changes in elevation in the Sripada World Herita...
Article
Full-text available
Adenomus kandianus Günther (1872) was previously known only from two specimens both deposited in the British Museum, the holotype BMNH1947.2.20.63, and the syntype of A. kelaarti BMNH1947.2.20.62. The only record of A. kandianus since the initial description in 1872 was by Ferguson in 1876, who mentions two specimens resembling Bufo kandianus in hi...
Technical Report
Full-text available
Approximately 900 man hours were spent in the field over a period of four months to document amphibians and reptiles in representative habitat types, using different sampling methods. A total of 21 species of amphibians and 45 species of reptiles were recorded from MRF, of which 15 amphibians and 26 reptile species are endemic. The reptiles include...
Article
Full-text available
A new species of Rhinophis, Rhinophis erangaviraji sp. nov. is described, the tenth species of the genus known from Sri Lanka. The new species is readily distinguished from all other congeners by its colour pattern and scalation. Morphometric analysis supports the distinction of the new species from the superficially similar R. blythii. The new spe...
Article
Wickramasinghe, Mendis Wickramasinghe Dulan Ranga Vidanapathirana Nethu, Ranwella, Nayanaka (2009): A new species of Rhinophis Hemprich, 1820 (Reptilia: Serpentes: Uropeltidae) from Rakwana massif, Sri Lanka. Zootaxa 2044: 1-22, DOI: 10.5281/zenodo.186405
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FIGURE 3. Head scalation of holotype of Rhinophis erangaviraji sp. nov., NMSL 20080601. A. dorsal view, B. lateral view, C. ventral view.
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FIGURE 11. Ventral view of tail of A. holotype of Rhinophis erangaviraji sp. nov., B. Rhinophis blythii, NMSL 20081501.
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FIGURE 12. Small (103 mm SVL) male paratype of Rhinophis erangaviraji sp. nov., NMSL 20080605 in A. dorsal view, and B. ventral view of midbody.
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FIGURE 4. Dorsal view in life of A. holotype of Rhinophis erangaviraji sp. nov., NMSL 20080601, adult male, 214 mm SVL, B. Rhinophis blythii, NMSL 20081501, adult female, 204 mm SVL.
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FIGURE 7. Ventral view of A. holotype of Rhinophis erangaviraji sp. nov., NMSL 20080601, B. Rhinophis blythii, NMSL 20081501.
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FIGURE 9. Lateral view of tail of A. holotype of Rhinophis erangaviraji sp. nov., NMSL 20080601, B. Rhinophis blythii, NMSL 20081501.
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FIGURE 10. Tail shield of A. holotype of Rhinophis erangaviraji sp. nov., NMSL 20080601, B. Rhinophis blythii, NMSL 20081501.
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FIGURE 5. Dorsal view of head of A. holotype of Rhinophis erangaviraji sp. nov., NMSL 20080601, B. Rhinophis blythii, NMSL 20081501.
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FIGURE 6. Lateral view of head of A. holotype of Rhinophis erangaviraji sp. nov., NMSL 20080601, B. Rhinophis blythii, NMSL 20081501.
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FIGURE 8. Dorsal view of tail of A. holotype of Rhinophis erangaviraji sp. nov., NMSL 20080601, B. Rhinophis blythii, NMSL 20081501.
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FIGURE 13. The results of Principal Component Analysis, showing first and second axes. REM 1, 3 = Rhinophis erangaviraji males NMSL 20080601, 603; REF 2, 4 = R. erangaviraji females NMSL 20080602, 604; RBF 1, 2, 3, 4 = Rhinophis blythii females NMSL 20081501, 502, 503, 504.