@article {57370, title = {A new striped species of Dendropsophus (Anura: Hylidae) with a composite advertisement call and comments on the D. rubicundulus group}, journal = {Vertebrate Zoology}, volume = {69}, year = {2019}, pages = {227{\textendash}246}, chapter = {227}, abstract = {

Herein we describe Dendropsophus rozenmani sp. nov. based on morphological, bioacoustic, and molecular data. This new species is distinguished from other species of Dendropsophus by its small size (SVL 18.7\–21.1 mm in adult males and 19.6\–23.2 mm in females); in life, dorsal ground coloration brown, with two anterior parallel and straight, dark brown stripes and a middorsal sacral stripe; and lateral limits of dorsal coloration above tympanum. In addition, the new species differs from all other species of the D. rubicundulus group (along with D. anataliasiasi) by having a composite advertisement call, i.e., a series of calls consisting of two call types. In a phylogenetic tree based on 494 bp of the 16S mitochondrial gene, four species of Dendropsophus, D. cruzi, D. juliani, and D. sanborni and one candidate species, D. juliani A, are positioned within the rubicundulus species group which poses questions on the monophyly of this group as well as its morphological definition. The occurrence of both single and composite calls in the D. rubicundulus group suggests future studies on the call evolution in that group as well as the whole genus.

}, keywords = {advertisement call, Amphibia, bioacoustics, Cerrado, Chiquitan{\'\i}a, Dendropsophus tritaeniatus, species delimitation, taxonomy}, issn = {1864-5755}, doi = {10.26049/VZ69-3-2019-01}, author = {Martin Jansen and Diego Jos{\'e} Santana and Bernardo Franco da Veiga Teixeira and Gunther K{\"o}hler} } @article {50771, title = {A new species of smooth-skinned Spinomantis frog (Anura: Mantellidae) from south-eastern Madagascar}, journal = {Zootaxa}, volume = {4317}, year = {2017}, month = {Apr-09-2017}, pages = {379}, abstract = {

We present molecular evidence for the presence of two species morphologically similar to Spinomantis bertini in Andohahela National Park, south-eastern Madagascar, differing by 5.5\−6.3\% pairwise DNA sequence divergences in the mitochondrial 16S rRNA gene. One of these was observed at higher elevations of ca. 1650 m above sea level, whereas the other was found at lower elevations of ca. 715 m a.s.l., close to the type locality of S. bertini (Isaka-Ivondro), and in one other location (Andreoky, ca. 1050 a.s.l.). We herein assign these low- to mid-elevation specimens to S. bertini based on their occurrence near the type locality and general agreement in colour pattern with the type specimen of Gephyromantis bertini Guib\é, 1947. The high-elevation form is described as Spinomantis beckei sp. nov. based on its molecular divergence and reciprocal monophyly with respect to S. bertini, lower expression of greenish dorsal colour and less distinct frenal stripe. Based on a comparison of published call descriptions for S. bertini and our recordings of S. beckei, we hypothesize that S. bertini has a lower note repetition rate in advertisement calls. Molecular data suggest that the S. bertini species complex is more diverse than previously recognized, with at least two more candidate species identified: S. sp. Ca7 from Ranomafana National Park, and a newly identified candidate species S. sp. Ca12 from Pic d\’Ivohibe Special Reserve.

}, keywords = {Amphibia, Andohahela National Park, Madagascar, Spinomantis beckei, Spinomantis bertini, taxonomy}, issn = {1175-5326}, doi = {10.11646/zootaxa.4317.210.11646/zootaxa.4317.2.12}, url = {https://biotaxa.org/Zootaxa/issue/view/zootaxa.4317.2https://biotaxa.org/Zootaxa/article/view/zootaxa.4317.2.12}, author = {Miguel Vences and J{\"o}rn K{\"o}hler and Frank Glaw} } @article {47327, title = {The use of bioacoustics in anuran taxonomy: theory, terminology, methods and recommendations for best practice}, journal = {Zootaxa}, volume = {4251}, year = {2017}, month = {Nov-04-2017}, pages = {1}, abstract = {

Vocalizations of anuran amphibians have received much attention in studies of behavioral ecology and physiology, but also provide informative characters for identifying and delimiting species. We here review the terminology and variation of frog calls from a perspective of integrative taxonomy, and provide hands-on protocols for recording, analyzing, comparing, interpreting and describing these sounds. Our focus is on advertisement calls, which serve as premating isolation mechanisms and, therefore, convey important taxonomic information. We provide recommendations for terminology of frog vocalizations, with call, note and pulse being the fundamental subunits to be used in descriptions and comparisons. However, due to the complexity and diversity of these signals, an unequivocal application of the terms call and note can be challenging. We therefore provide two coherent concepts that either follow a note-centered approach (defining uninterrupted units of sound as notes, and their entirety as call) or a call-centered approach (defining uninterrupted units as call whenever they are separated by long silent intervals) in terminology. Based on surveys of literature, we show that numerous call traits can be highly variable within and between individuals of one species. Despite idiosyncrasies of species and higher taxa, the duration of calls or notes, pulse rate within notes, and number of pulses per note appear to be more static within individuals and somewhat less affected by temperature. Therefore, these variables might often be preferable as taxonomic characters over call rate or note rate, which are heavily influenced by various factors. Dominant frequency is also comparatively static and only weakly affected by temperature, but depends strongly on body size. As with other taxonomic characters, strong call divergence is typically indicative of species-level differences, whereas call similarities of two populations are no evidence for them being conspecific. Taxonomic conclusions can especially be drawn when the general advertisement call structure of two candidate species is radically different and qualitative call differences are thus observed. On the other hand, quantitative differences in call traits might substantially vary within and among conspecific populations, and require careful evaluation and analysis. We provide guidelines for the taxonomic interpretation of advertisement call differences in sympatric and allopatric situations, and emphasize the need for an integrative use of multiple datasets (bio-acoustics, morphology, genetics), particularly for allopatric scenarios. We show that small-sized frogs often emit calls with frequency components in the ultrasound spectrum, although it is unlikely that these high frequencies are of biological relevance for the majority of them, and we illustrate that detection of upper harmonics depends also on recording distance because higher frequencies are attenuated more strongly. Bioacoustics remains a prime approach in integrative taxonomy of anurans if uncertainty due to possible intraspecific variation and technical artifacts is adequately considered and acknowledged.

}, keywords = {Amphibia, Anura, call, call analysis, call description, call variation, definitions, note, pulse, sound, species delimitation, taxonomy, vocalization}, issn = {1175-5326}, doi = {10.11646/zootaxa.4251.110.11646/zootaxa.4251.1.1}, url = {http://biotaxa.org/Zootaxa/issue/view/zootaxa.4251.1}, author = {J{\"o}rn K{\"o}hler and Martin Jansen and Ariel Rodr{\'\i}guez and Philippe J. R. Kok and Lu{\'\i}s Felipe Toledo and Emmrich, Mike and Frank Glaw and C{\'e}lio F. B. Haddad and Mark-Oliver R{\"o}del and Miguel Vences} }