A new species of Theloderma (Amphibia: Anura: Rhacophoridae) from Vietnam

Abstract

We describe a new species of Theloderma from northwestern Vietnam based on morphological differences and molecular divergence. Theloderma annae sp. nov. is distinguishable from its congeners on the basis of a combination of the following characters: Size small, SVL 27.1-28.5 mm in males, 30.3-32.6 mm in females; head longer than wide; vomerine teeth absent; snout long (SL/SVL 0.16-0.19); spines on upper eyelid absent; tibiotarsal projection absent; dorsal skin smooth; dermal fringes on forearm and tarsus absent; dorsal surface grayish green; and throat and ventral surface of arms and thighs brown with white spots.

Two new cryptic species of Microhyla Tschudi, 1838 (Amphibia, Anura, Microhylidae) related to the M. heymonsi group from central Vietnam

“…The BI summarized two independent runs of four Markov Chains for 10 000 000 generations. A tree was sampled every 100 generations and a consensus topology was calculated for 70 000 trees after discarding the first 30 001 trees (burn-in = 3 000 000) (Nguyen et al 2017). We checked parameter estimations and convergence using Tracer version 1.5 (Rambaut and Drummond 2009).…”

New distributional records of the Baibung Small Treefrog, Theloderma baibungense (Jiang, Fei, and Huang 2009) (Anura: Rhacophoridae), from Mizoram, India with comments on taxonomy, natural history and conservation status.

“…The taxonomy of the genus Theloderma has undergone several revisions and has been subjected to intensive phylogenetic studies (Rowley et al 2011;Dever 2017;Nguyen et al 2016;Poyarkov et al 2015Poyarkov et al , 2018, but understanding of the diversity of the genus is far from complete (Poyarkov et Our specimens, encountered at elevations of ca. 235-1,650 m asl, were collected from a road in front of Homestead Flower Garden, at the corner of an empty cement water tank, and along a forest trail on ground covered with leaf litter and twigs, in foliage, and on tree trunks.…”

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T he genus Theloderma Tschudi 1838 (Bug-eyed Treefrogs) comprises 26 currently recognized species that are distributed in northeastern India, Myanmar, southern China, and throughout southeastern Asia (Frost 2021). Information on these frogs is very limited and species delineation for this group is quite challenging, largely due to morphological similarity but also because many species are poorly represented in museum collections, with some known only from a single or a few sampling sites (Nguyen et al 2014(Nguyen et al , 2016. The Baibung Small Treefrog (Theloderma baibungense) is known from the type locality in Beibung, Medog County, Tibet, China, to northeastern India (Arunachal Pradesh, Assam, and Nagaland) and northeastern Bangladesh (Lawachara National Park) (Frost 2021).

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A New Species of the Genus Zhangixalus (Amphibia: Rhacophoridae) from Vietnam

“…A total of 36 measurements was taken with a dial caliper to the nearest 0.1 mm following the methods in Nguyen et al (2016) Terminology for describing webbing formula followed Glaw and Vences (2007). Sex was determined by the presence of nuptial pads and gonadal inspection.…”