A new species of Leptolalax (Anura: Megophryidae) from central Vietnam

作者：Rowley Jodi J L^*; Huy Duc Hoang; Vinh Quang Dau; Duong Thi Thuy Le; Trung Tien Cao

来源：Zootaxa, 2012, (3321): 56-68.

• Bioacoustics
• Kon Tum Plateau
• Leptolalax firthi sp nov.
• Southeast Asia
• sexual dimorphism

We describe a new species of Leptolalax from central Vietnam. Leptolalax firthi sp. nov. is distinguished from its congeners by a combination of the following characters: an absence of distinct dark brown or black dorsolateral markings; toes with rudimentary webbing and wide lateral dermal fringes in males and weak or absent lateral dermal fringes in females; most males with wide lateral dermal fringes on Finger II; medium size (26.4-29.2 mm in 21 adult males, 25.7-36.9 mm in 14 females); and near immaculate white chest and belly. The male advertisement call of the new species, consisting of 2-5 notes with a dominant frequency of 5.4-6.6 kHz (at 18.3-21.2 degrees C) is also unique among Leptolalax species for which calls are known. Uncorrected sequence divergences between L. firthi and all homologous 16S rRNA sequences available were %26gt;10%. At present, the new species is known from montane evergreen forest between similar to 860-1720 m elevation in Kon Tum and Quang Nam Provinces. The extreme sexual dimorphism observed in L. firthi in terms of lateral dermal fringing, a morphological character often used to distinguish Leptolalax species, highlights the importance of ensuring interspecific comparisons in the genus are performed separately for each sex.

• 出版日期2012-5-23