Data from: Sorting out Lalos: description of new species and additional taxonomic data on megophryid frogs from Northern Indochina (genus Leptolalax, Megophryidae, Anura)

Frogs in the subgenus Lalos of the genus Leptolalax (Megophryidae) are
highly diversified in continental Asia and consist of about 17 nominal
species. These frogs as small, inconspicuous, and of high superficial
morphological similarity. We here formulate a hypothesis of phylogenetic
relationships and assess the amount of genetic variation among
genealogical lineages on the basis of 536bp of mitochondrial 16S rDNA
sequences. Combining molecular data with a study of morphology,
morphometric divergence and geographical proximity, we tested hypotheses
of species identity. We (1) used character-based and morphometric analyses
to assign thee type specimens of species in Lalos available to us to
respectively one of the main clades, in order to propose the best
potential correct taxonomic and nomenclatural allocation for the
individuals included in the molecular study, and (2) tried to also assign
the historical museum specimens to these molecular taxonomic units and to
reclassify them whenever necessary. We also used the molecular data to
match tadpoles with adults and provide tadpole descriptions for species of
which these larvae were previously unknown. Specimens that could neither
be allocated to a molecular group (on the basis of their DNA “barcode”)
nor to a type specimen via morphometry are described here as new species.
Based on this integrative set of data and analyses we describe two new
species, Leptolalax eos n. sp. and Leptolalax nyx n. sp., we resurrect
Leptolalax minimus, and reassess the distribution of the species studied.
We propose changes in the Red List status of L. pelodytoides and L.
ventripunctatus and suggest a conservation status for the new species
described herein.