Oligodon condaoensis NGUYEN, NGUYEN, LE & MURPHY, 2016
Can you confirm these amateur observations of Oligodon condaoensis?
|Higher Taxa||Colubridae, Colubrinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)|
|Synonym||Oligodon condaoensis NGUYEN, NGUYEN, LE & MURPHY 2016|
|Distribution||S Vietnam (Hon Ba Island)|
Type locality: Hon Ba Island, Con Dao District, Ba Ria–Vung Tau Prov., Vietnam; coordinates 8°39’03”N, 106°33’29”E; elevation 15 m asl.
|Types||Holotype: ITBCZ 2595, adult male, collected by Sang Ngoc Nguyen on 24 October 2015. Paratypes. ITBCZ 2596, adult male; ITBCZ 2597–8, two adult females; collected around the site of the holotype on Hon Ba Island by Sang Ngoc Nguyen on 24 and 25 October 2015.|
|Diagnosis||Diagnosis. Oligodon condaoensis sp. nov. is distinguished from all of its congeners by a combination of the following morphological characters: (1) medium size in adults (total length up to 552 mm); (2) dorsal scale rows 17–17–15; (3) deeply forked hemipenes without papillae and spines, extending to SC 13 or 14; (4) maxillary teeth 11–13, the posterior three being enlarged; (5) cloacal plate undivided; (6) head scalation complete; (7) nasal divided; (8) presubocular absent; (9) ventrals 168–176; (10) subcaudals 33–37; (11) overall dorsal coloration dark gray, faint body stripes present or absent; (12) venter cream to dark gray without rectangular blotches.|
Comparisons. see Nguyen et al. 2016 (Tables 2, 3) for details.
|Comment||Sexual dimorphism. The males are larger (SVL 461–481 mm vs. 395–401 mm) and darker than the females. The faint stripes on females are more visible than on the males. Tails in males are longer than in females (SC 37 vs. 33–34; TL/SVL 0.15 vs. 0.14) (Nguyen et al. 2016).|
Natural history. All specimens were collected in the daytime, between 9:00 am and 12:00 pm. The animals were found active on the ground of evergreen forest (Fig. 3D) near by Hon Ba Forest Ranger Station. Two nights of searching in the area failed to find the snake. This infers that the new species is diurnal. Another species, O. fasciolatus, was recorded sympatrically with the new species (Nguyen et al. 2016).
|Etymology||The specific epithet condaoensis is derived from Con Dao Islands, where the new species was discovered.|