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Southernmost records of Hyalinobatrachium eischmanni (Anura:
Centrolenidae)
Fernando K. Cruz,1 Veronica L. Urgiles,2, 4 Juan Carlos Sánchez-Nivicela,2, 4 David C. Siddons,3
Diego F. Cisneros-Heredia4, 5
1 Universidad de Guayaquil, Escuela de Biología, Av. Delta yAv. Kennedy, Guayaquil, Ecuador. 2 Universidad del Azuay, Museo de Zoología,
Laboratorio de Herpetología, Av. 24 de Mayo 7-77, Cuenca, Ecuador. 3 Universidad del Azuay, Escuela de Biología, Ecología y Gestión, Av. 24
de Mayo 7-77, Cuenca, Ecuador. 4 Instituto Nacional de Biodiversidad del Ecuador, División de Herpetología, calle Rumipamba 341 y Av. de los
Shyris, Quito, Ecuador. 5 Universidad San Francisco de Quito USFQ, Colegio de Ciencias Biológicas y Ambientales, Laboratorio de Zoología
Terrestre, Quito 170901, Ecuador.
Corresponding author: Veronica L. Urgiles, vurgiles@uazuay.edu.ec
Abstract
We present new records for Fleischmann’s Glassfrog, Hyalinobatrachium eischmanni (Boettger, 1893), which extend
the distribution of this species into central and southwestern Ecuador and thus represent the southernmost known
localities. These new reports are based on specimens collected at Cerro de Hayas, province of Guayas, and Macul,
province of Los Ríos. These new localities extend the known geographic range of H. eischmanni by approximately
250 km south of previous known occurrences.
Key words
Glassfrogs; western Ecuador; distribution; Guayas; Los Ríos.
Academic editor: Rodrigo Lingnau | Accepted 9 March 2017 | Accepted 30 May 2017 | Published 11 July 2017
Citation: Cruz FK, Urgiles VL, Sánchez-Nivicela JC, Siddons, DC, Cisneros-Heredia DF (2017) Southernmost records of Hyalinobatrachium
eischmanni (Anura: Centrolenidae). Check List 13 (4): 67–70. https://doi.og/10.15560/13.4.67
Check List 13 (4): 67–70
https://doi.org/10.15560/13.4.67
4
13
pp
Copyright Cruz et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use,
distribution, and reproduction in any medium, provided the original author and source are credited.
Introduction
Hyalinobatrachium eischmanni (Boettger, 1893) has
the widest geographic distribution of any species of the
family Centrolenidae. It occurs from southern Mexico
to central-western Ecuador, from sea level up to 1800
m elevation (Kubicki 2007, Frost 2016). In Ecuador,
H. eischmanni inhabits Lowland Seasonal and Non-
Seasonal Evergreen forests in the northern and central
Pacic lowlands below 800 m elevation, with records in
the provinces of Esmeraldas, Manabí, Pichincha, and Los
Ríos (Lynch and Duellman 1973, Cisneros-Heredia and
McDiarmid 2007a, 2007b, Delia et al. 2010).
Information regarding amphibians of western Ecua-
dor is still fragmentary, and several species of the family
Centrolenidae are known from just a few widely dispersed
localities. The main explanation for this is the absence of
information regarding alpha diversity for the family in
the central and southern regions of Ecuador (Campos et
al. 2007, Ortega-Andrade et al. 2010, Yanez-Muñoz et al.
2014). Herein, we present 2 new latitudinal records of H.
eischmanni, which expand its geographic range along
the foothills and lowlands of central and southwestern
Ecuador.
NOTES ON GEOGRAPHIC DISTRIBUTION
68 Check List 13 (4)
Methods
Specimens of H. eischmanni reported herein are
deposited at the Museo de Zoología, Universidad del
Azuay and were collected by the authors under research
permits of the Ministerio del Ambiente Ecuador
(008-2015-IC-FLO/FAU-DPG/MAE and 002-2015-UB-
UPN-DPALR-MAE). An adult male (Fig. 1) and a juvenile
male (MZUA.AN.1693–1694) were collected at Cerro de
Hayas (–02.7299, –079.6297, 127m), approximately 20
km southwest of Naranjal, province of Guayas (Fig. 3)
on 12 December 2015. One juvenile (MZUA.AN.0660,
Fig. 2) and 1 adult male (MZUA.AN.0661) were collected
at Macul (–01.2279 S, –079.7531, 84m), approximately
40 km southwest of Quevedo, province of Los Ríos on
16 August 2015 (Fig. 3). All the specimens were found
in fragments of riparian vegetation near paddocks and
pastures.
Identication
The specimens exhibit the diagnostic features described
by Goin (1964), Lynch and Duellman (1973), Ortega-
Andrade et al. (2010), and Wild (2003). No signicant
variation is distinguished among the 4 specimens, either
alive or preserved. Diagnostic features include: green
dorsum with small yellow spots, and yellow iris with dark
spots in life; transparent parietal peritoneum; pericardium
and visceral peritonea covered by iridophores (i.e. white),
and all other internal peritonea transparent; extensive
webbing between ngers III and IV, but basal among all
other ngers; and humeral spine absent (Figs 1, 2).
Discussion
These new records signicantly extend the known
geographic range of H. eischmanni, representing the
southernmost known localities for the species. Macul is
roughly 95 km south and Cerro de Hayas is approximately
250 km south from the nearest previously documented
locality (Río Palenque, –00.5667, –079.3333, province
of Santo Domingo; Lynch and Duellman 1973, Cisneros-
Figure 2. Hyalinobatrachium eischmanni, juvenile (MZUA.AN.0660) collected at Macul, province of Los Ríos, Ecuador. Note the distinctive
coloration of this species, with green dorsum and yellow spots, with a yellow iris with dark spots. Photo by Juan Carlos Sánchez-Nivicela.
Figure 1. Hyalinobatrachium eischmanni, adult male (MZUA.
AN.1693) collected at Cerro de Hayas, province of Guayas, Ecuador.
Photo by Fernando K. Cruz.
Cruz et al. | Southernmost records of Hyalinobatrachium eischmanni 69
Heredia and McDiarmid 2007b; Fig. 3). In addition, Cerro
de Hayas is the rst known locality of H. eischmanni in
the province of Guayas.
These new records reveal the presence of H. eis-
chmanni across the Pacic lowlands of Ecuador, in the
Western Ecuador Biogeographic Province (sensu Mor-
rone 2014). Despite extensive habitat destruction within
this region, H. eischmanni still maintains small popula-
tions in small forest fragments; more studies are needed
in order to determine whether there is any need for local
conservation eorts. However, as H. eischmanni is a
widespread species, even more studies are needed in
order to explore its biogeography and taxonomic status
to determine if we are indeed dealing with one species
or a species complex. From this, we will be able to truly
determine its local conservation status and extinction
risk.
Acknowledgements
We would like to thank Ronald Navarrete, Pedro X. Astu-
dillo, and Jacinto Guillén for institutional support. Erik
Wild and Juan Manuel Guayasamin provided valuable
comments to this paper. The work of VLU and JCS was
possible because of funding by Universidad del Azuay
under budget code Fondos UDA 2016 [39, 2016].
Authors’ Contributions
FKC, VLU and JCS collected the specimens; JCS and
DFCH identied the specimens; VLU and DFCH wrote
the text; VLU and JCS elaborate the map; DCS and
DFCH reviewed the text and distributional maps.
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... Although our knowledge of the diversity and natural history of reptiles in western Ecuador is limited, important herpetological discoveries have been made in recent years, such as new species and significant expansion of the geographic range extensions of previously recorded species (e.g. Jadin et al. 2009;Cisneros-Heredia et al. 2010;Ortega-Andrade et al. 2010;Passos et al. 2012;Torres-Carvajal et al. 2012, 2015Ayala-Varela et al. 2014;Yánez-Muñoz et al. 2014Cisneros-Heredia and Romero 2015;Pyron et al. 2015;Salazar-Valenzuela et al. 2015;Cruz-García 2017;Cruz et al. 2017;Arteaga et al. 2017Arteaga et al. , 2018Reyes-Puig et al. 2019). ...
... Eighty-four species of reptiles have been previously reported in the province of Guayas (Almendáriz and Carr 1992;Cornejo 2015;Cruz et al. 2017;Torres-Carvajal et al. 2019). Records presented herein reinforce the probability that there are still several unreported species of reptiles in Guayas, remaining in small relicts of native vegetation. ...
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Ein neuer Laubfrosch aus Costa Rica. Berichte der Senckenbergischen Naturforschenden Gesellschaft in Frankfurt am Main
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Análisis de Vacíos y Áreas Prioritarias Para la Conservación de la Biodiversidad en el Ecuador Continental
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Campos F, Peralvo M, Cuesta-Camacho F, Luna S (2007) Análisis de Vacíos y Áreas Prioritarias Para la Conservación de la Biodiversidad en el Ecuador Continental. Instituto Nazca de Investigaciones Marinas / EcoCiencia / Ministerio del Ambiente / The Nature Conservancy / Conservación Internacional. Proyecto GEF: Ecuador Sistema Nacional de Áreas Protegidas, BirdLife International y Aves / Conservación, Quito, 83 pp.