Monday, August 31, 2015

[Herpetology • 2015] Hyloscirtus mashpi • Molecular Phylogeny of Stream Treefrogs (Hylidae: Hyloscirtus bogotensis Group), with A New Species from the Andes of Ecuador


Hyloscirtus mashpi   Guayasamin, Rivera-Correa, Arteaga, Culebras, 
Bustamante, Pyron, Peñafiel, Morochz & Hutter, 2015
Figure 7. Colour variation in life of Hyloscirtus mashpi n. sp. at Reserva de Biodiversidad Mashpi, Ecuador. (A–D) Metamorphs. (E–G) Adult males. (H) Adult female.

Abstract
We present a new molecular phylogeny of the stream treefrog genus Hyloscirtus, with an improved taxon sampling in the Hyloscirtus bogotensis group. The tree supports the existence of three clades within the genus (Hyloscirtus armatus group, H. bogotensis group and Hyloscirtus larinopygion group) in congruence with previous studies, and suggests the presence of at least three new species in the H. bogotensis group. Herein, we describe one of these species, Hyloscirtus mashpi n. sp. from the Pacific slope of the Ecuadorian Andes. The validity of the latter is supported by molecular, morphological and acoustic data. We also tested individuals of the new species for the chytrid fungus Batrachochytrium dendrobatidis, finding a prevalence of 17.6% (6 positives and 28 negatives). However, at sampled streams, frog densities were high, suggesting that H. mashpi n. sp. may be tolerant to the infection.

Keywords: amphibia, chytrid fungus, cryptic diversity, phylogeny, taxonomy,


Systematics

Hyloscirtus mashpi n sp.
Suggested common name in English: Mashpi Stream Treefrog
Suggested common name in Spanish: Rana torrentícola de Mashpi


Figure 7. Colour variation in life of Hyloscirtus mashpi n. sp. at Reserva de Biodiversidad Mashpi, Ecuador.
(A–D) Metamorphs. (E–G) Adult males. (H) Adult female.

Figure 5. Hyloscirtus species, in life, from Ecuador.
(A) Hyloscirtus mashpi n. sp., MZUTI 3097, from Milpe. (B) H. mashpi n. sp., MZUTI 3518, from Reserva de Biodiversidad Mashpi. (C) H. mashpi n. sp., MZUTI 3096, from Reserva de Biodiversidad Mashpi. (D) H. mashpi n. sp., not collected, from Reserva de Biodiversidad Mashpi. (E and F) H. alytolylax, not collected, from Mindo. (G) H. alytolylax, MZUTI 1921, from San Francisco de las Pampas. (H) Hyloscirtus sp., MZUTI 3262, from Reserva Buenaventura. (I) H. palmeri, not collected, from Milpe. (J) H. phyllognathus, not collected, from Maycu.

Etymology. The specific epithet mashpi is used as a noun in apposition and refers to one of the localities where the species is found, Reserva de Biodiversidad Mashpi, a protected area where research and conservation efforts are carried out by Reserva de Biodiversidad Mashpi S.A., Universidad Tecnológica Indoamérica, Tropical Herping and other institutions. The word mashpi is a Yumbo word that means ‘friend of water’, which is a precise description of this treefrog, which is always found along pristine streams.




Juan M. Guayasamin, Mauricio Rivera-Correa, Alejandro Arteaga, Jaime Culebras, Lucas Bustamante, R. Alexander Pyron, Nicolás Peñafiel, Carlos Morochz and Carl R. Hutter. 2015. Molecular Phylogeny of Stream Treefrogs (Hylidae: Hyloscirtus bogotensis Group), with  A New Species from the Andes of Ecuador. Neotropical Biodiversity. 1(1);  DOI: 10.1080/23766808.2015.1074407 || 10.13140/RG.2.1.4731.8248



Se presenta una nueva filogenia de las ranas torrentícolas del género Hyloscirtus, la cual incluye un muestreo ampliado del grupo H. bogotensis. El árbol apoya la presencia de tres clados dentro del género (Grupo H. armatus, Grupo H. bogotensis, Grupo H. larinopygion) y sugiere la existencia de tres especies nuevas. En el presente estudio describimos una de estas especies, Hyloscirtus mashpi n. sp., distribuida en la vertiente pacífica de los Andes del Ecuador. La validez de la nueva especie se sustenta en datos moleculares, morfológicos y acústicos. Nuestro estudio también demuestra que la nueva especie está infectada por el quítrido Batrachochytrium dendrobatidis; sin embargo, las poblaciones son abundantes, sugiriendo que H. mashpi n. sp. tolera la infección.
|| Amphibia, diversidad críptica, filogenia, hongo quítrido, taxonomía

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