Abstract
The examination on variations of morphological characters among 35 specimens of Calloselasma rhodostoma (Kuhl, 1824) from four different populations in Indonesia has been completed in this study. Univariate and multivariate analyzes allowed us to recognize the clustering of four populations through morphological diagnosis. The results of the average body size (Total Length) showed that the largest male is from Kangean Island (579.33 mm), while the largest female is from Java (841.07 mm). Comparison of meristic analysis represented three clusters from Principal Component Analysis (PCA) which is considered to be independent population. Here we also described three types of cephalic scalation variation that called small accessories scales and their distribution in Indonesia. Keywords: C. rhodostoma , Indonesia, Meristic, Morphometry, Viperidae.
Highlights
INTRODUCTION1 Vipers (Viperidae), a family of venomous snake, have been divided into two major subfamilies, Crotalinae (Pit viper) and Viperinae (Pitless viper) [1]; comprised of 242 species, and 100 of which are distributed across all continents except Australia and Antarctica [1,2]
Malayan Pit Viper (Calloselasma rhodostoma: Crotalinae) is pit viper originated from tropical Southeast Asia [3,4]
Malayan Pit Viper is widely distributed in South East Asia, including Cambodia (Phnom Nam Lyr Mountain and Cardamom Mountain) [6], Thailand (Lop Buri, Sakon Nakhon, Korat, Chiang Mai, Nakhon Si Thammarat, Trang and Phuket) [7], Malay Peninsula (Alor Star in North Kedah), Bangnara (Patani) [8]
Summary
We examined a total of 35 preserved specimens consisted of 14 males and 21 females. All specimens were deposited in Museum Zoologicum Bogorinse (MZB-LIPI Indonesia). We divided samples into their origin (geographic consideration), to be specific, under. To prevent juvenile specimens be examined, we determined the size of Total Length (TL) as 400 mm for adult specimens. Pattern and coloration of the body were observed from fresh preserved specimens [11]. We examined all specimens for the variation on cephalic scalation identified as small accessories scale and the distribution in Indonesia. The small accessories scale that we identified as scale that touched to internasal, prefrontal, nostril and loreal scale
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