Showing posts with label Author: M. Cota. Show all posts
Showing posts with label Author: M. Cota. Show all posts

Wednesday, February 29, 2012

[Herpetology • 2011] Jarujinia: New Genus | จิ้งเหลนสองขาอาจารย์จารุจินต์ | Jarujinia bipedalis • A New Genus of Lygosomine Lizard from Central Thailand


Jarujinia bipedalis | จิ้งเหลนสองขาอาจารย์จารุจินต์

Abstract
 A new species of Lygosomine skink (Jarujinia bipedalis sp. nov.) from Suan Pung District, Ratchaburi Province in Central Thailand is described and assigned to a new monotypic genus (Jarujinia). This bipedal skink with only forearms possessing two clawless vestigial fingers appears morphologically to be an evolutionary link between the Lygosomine genera of Larutia and Isopachys, but clearly distinct from both.
Key words: new genus, new species, Jarujinia, Lygosomine.

Jarujinia bipedalis  Chan-ard, Makchai & Cota 2011

Holotype. - THNHM 15410
Type locality: Ban Pu Nam Ron, Tambon Pong Kra Ting, Suan Pung District, Ratchaburi Province, elevation ca. 600 m
Distribution: Thailand (Western mountain range in Ban Pu Nam Ron, Tambon Pong Kra Ting, Suan Pung District, Ratchaburi Province, ca. 150 km west-southwest of Bangkok)


Diagnosis: The only scincine genus (and species) in which a single species has only forelimbs with two clawless vestigial fingers and in which the hind-limbs are completely absent.


Etymology.- The genus is named for Dr. Jarujin Nabhitabhata (1950-2008), first Director of the Thailand Natural History Museum, to whom we owe much professional and personal gratitude. The species is named for its character of only possessing a pair of forelimbs: two legs are present, but the hind-limbs are absent.


Chan-ard, Tanya; Sunchai Makchai and Michael Cota. 2011. Jarujinia: A New Genus of Lygosomine Lizard from Central Thailand, with a Description of One New Species. The Thailand Natural History Museum Journal .5 (1): 17-24

[Herpetology • 2011] Larutia nubisilvicola | จิ้งเหลนป่าเมฆ -เขานัน • A New Species of Larutia (Squamata: Scincidae) from Peninsular Thailand



Abstract
During an expedition to study the biodiversity of the cloud forest of the Upper Khao Nan Mountain Range of Nakhon Si Thammarat in April 2007, a Larutia sp. was found. This proved to be morphologically distinct from any other known species of Larutia and is now described as Larutia nubisilvicola sp. nov.

Key words: Reptilia, Lepidosauria, Squamata, Lacertilia, Sauria, Scincomorpha, Scincidae, Larutia, Larutia nubisilvicola sp. nov., Southeast Asia, Thailand, taxonomy.


Holotype: THNHM 11799 female.
Paratypes: THNHM 11797 female, THNHM 11798 male, THNHM 11800 female; collected by T. Chan-ard, M. Cota, S. Makchai & S. Lhaoteaw on 20 April 2007. 
Diagnosis: A small species of Larutia. Mid-body scale row is 24. Possesses 4 supraoculars, 6 supralabials and 5 infralabials. The first infralabial is separate from, but appears as an extension of the mental. The postmental contacts the first and second infralabials as well as the first pair of chin shields. A single gular scale is present between the second pair of chin shields.

Etymology: Larutia nubisilvicola is named as an inhabitant of the cloud forest, where it is found. 

Larutia nubisilvicola 
Chan-ard, T., M. Cota, S. Mekchai and S. Lhaoteaw. 2011. A New Species of Larutia (Squamata: Scincidae) Found in Peninsular Thailand. Thailand Natural History Museum Journal 5 (1): 57–65.

Wednesday, November 30, 2011

[Herpetology • 2008] งูลายสอลาวเหนือ | Paratapinophis praemaxillaris • Rediscovery from northern Thailand



FIGURE 1. A female Paratapinophis praemaxillaris (FMNH 271447)
collected from Nan Province, northern Thailand.

ชื่อไทย: งูลายสอลาวเหนือ
ชื่อสามัญ: Angel's Mountain Keelback
ชื่อวิทยาศาสตร์: Paratapinophis praemaxillaris Angel, 1929

ABSTRACT
Paratapinophis praemaxillaris was described by Angel (1929) on the basis of two neonate specimens from Xieng-Khouang in northern Laos. Pope later placed the genus in the synonymy of Opisthotropis Günther, 1872. We collected five adult specimens along the Nan River, in northern Thailand. Here we describe the adults of Angel’s Stream Snake, discuss the
monotypic genus, its distribution, habitat, and diet. Based upon morphology we remove Paratapinophis Angel, 1929 from the synomomy of Opisthotropis. An identification matrix is provided for identifying snakes in the genera Opsithotropis, Parahelicops, and Paratapinophis Bourret, 1934, all have been considered Opisthotropis at one time or another, and we comment on the status of Opisthotropis.
KEY WORDS: Paratapinophis, Opisthotropis, Thailand, China, Laos, stream snakes


FIGURE 4. The microhabitat at the collection included waterfalls (seepage areas),
a gravel and sand bar, and shallow water between the bank and the gravel bar.


FIGURE 2. The map notes the four localities for Paratapinophis praemaxillaris is known from four localities: (1929) the type locality in Xieng-Khouang, Laos; (1981) Doi Saket, Thailand; (1982) Jindong, Yunnan Province, China; and (2007) the Nan River location in Nan Province, Chaloemprakait District, Huia Gon Subdistrict, at the Wang Pian Waterfalls, Thailand.

Murphy, J.C., Chan-ard, T., Mekchai, S., Cota, M. & Voris, H.K. 2008. The Rediscovery of Angel’s Stream Snake, Paratapinophis praemxillaris Angel, 1929 (Reptilia: Serpentes: Natricidae). The Natural History Journal of Chulalongkorn University 8(2): 169-183