This document is a field guide to the amphibians of Nayarit, Mexico created by Jesús A. Loc-Barragán, Iván Ahumada-Carrillo, and Guillermo A. Woolrich-Piña. It features photographs of 52 amphibian species found in Nayarit with the goal of aiding identification. The guide highlights species that are vulnerable or at risk and notes that no amphibians in Nayarit are poisonous.

1. Guide to Amphibians of Nayarit, México
Jesús A. Loc-Barragán1
, Iván Ahumada-Carrillo2
and Guillermo A. Woolrich-Piña3
1
Universidad Autónoma de Nayarit, 2
Universidad de Guadalajara, Jalisco, 3
Instituto Tecnológico Superior de Zacapoaxtla, Puebla
1
Photos by: Jesús Loc-Barragán, Guillermo Woolrich-Piña, Iván Ahumada-Carrillo, Christoph I. Grünwald.
Produced by: Jesús Loc-Barragan, Thanks to Christoph I. Grünwald for the support of photograph 36.
© All rights reserved to the authors [j_albert_loc@hotmail.com] and [biolocbarragan@gmail.com].
(M) Male, (F) Female, (Juv.) Juvenile, (L) Larvae and (E) Eggs. [fieldguides.fieldmuseum.org] [784] version 1 06/2016
1 Anaxyrus kelloggi (Juv.)
Photo: Iván Ahumada-Carrillo
2 Anaxyrus kelloggi
Photo: Jesús Loc-Barragán
3 Incilius marmoreus (Juv.) (F)
Photo: Iván Ahumada-Carrillo
4 Incilius marmoreus (F)
Photo: Jesús Loc-Barragán
BUFONIDAE BUFONIDAE BUFONIDAE BUFONIDAE
5 Incilius marmoreus (M)
Photo: Jesús Loc-Barragán
6 Incilius mazatlanensis (F)
Photo: Iván Ahumada-Carrillo
7 Incilius mazatlanensis (M)
Photo: Jesús Loc-Barragán
8 Incilius occidentalis (E)
Photo: Iván Ahumada-Carrillo
BUFONIDAE BUFONIDAE BUFONIDAE BUFONIDAE
9 Incilius occidentalis (Juv.)
Photo: Jesús Loc-Barragán
10 Incilius occidentalis
Photo: Jesús Loc-Barragán
11 Rhinella marina (Juv.)
Photo: Jesús Loc-Barragán
12 Rhinella marina
Photo: Guillermo Woolrich-Piña
BUFONIDAE BUFONIDAE BUFONIDAE BUFONIDAE
13 Craugastor augusti (Juv.)
Photo: Iván Ahumada-Carrillo
14 Craugastor augusti (Juv.)
Photo: Iván Ahumada-Carrillo
15 Craugastor augusti
Photo: Jesús Loc-Barragán
16 Craugastor occidentalis (Juv.)
Photo: Jesús Loc-Barragán
CRAUGASTORIDAE CRAUGASTORIDAE CRAUGASTORIDAE CRAUGASTORIDAE
17 Craugastor occidentalis
Photo: Jesús Loc-Barragán
18 Craugastor pygmaeus
Photo: Jesús Loc-Barragán
19 Craugastor vocalis
Photo: Jesús Loc-Barragán
20 Agalychnis dacnicolor (E)
Photo: Jesús Loc-Barragán
CRAUGASTORIDAE CRAUGASTORIDAE CRAUGASTORIDAE HYLIDAE

2. Guide to Amphibians of Nayarit, México
Jesús A. Loc-Barragán1
, Iván Ahumada-Carrillo2
and Guillermo A. Woolrich-Piña3
1
Universidad Autónoma de Nayarit, 2
Universidad de Guadalajara, Jalisco, 3
Instituto Tecnológico Superior de Zacapoaxtla, Puebla
2
Photos by: Jesús Loc-Barragán, Guillermo Woolrich-Piña, Iván Ahumada-Carrillo, Christoph I. Grünwald.
Produced by: Jesús Loc-Barragan, Thanks to Christoph I. Grünwald for the support of photograph 36.
© All rights reserved to the authors [j_albert_loc@hotmail.com] and [biolocbarragan@gmail.com].
(M) Male, (F) Female, (Juv.) Juvenile, (L) Larvae and (E) Eggs. [fieldguides.fieldmuseum.org] [784] version 1 06/2016
21 Agalychnis dacnicolor (Juv.)
Photo: Jesús Loc-Barragán
22 Agalychnis dacnicolor
Photo: Guillermo Woolrich-Piña
23 Diaglena spatulata
Photo: Guillermo Woolrich-Piña
24 Exerodonta smaragdina
Photo: Iván Ahumada-Carrillo
HYLIDAE HYLIDAE HYLIDAE HYLIDAE
25 Dryophytes arenicolor
Photo: Jesús Loc-Barragán
26 Dryophytes eximia
Photo: Jesús Loc-Barragán
27 Plectrohyla cf. bistincta
Photo: Iván Ahumada-Carrillo
28 Smilisca baudinii
Photo: Guillermo Woolrich-Piña
HYLIDAE HYLIDAE HYLIDAE HYLIDAE
29 Smilisca fodiens
Photo: Jesús Loc-Barragán
30 Tlalocohyla smithii
Photo: Jesús Loc-Barragán
31 Trachycephalus tyhponius
Photo: Iván Ahumada-Carrillo
32 Eleutherodactylus nitidus
Photo: Jesús Loc-Barragán
HYLIDAE HYLIDAE HYLIDAE ELEUTHERODACTYLIDAE
33 Eleutherodactylus pallidus
Photo: Jesús Loc-Barragán
:
34 Eleutherodactylus teretistes
Photo: Iván Ahumada-Carrillo
35 Leptodactylus melanonotus (Juv.)
Photo: Jesús Loc-Barragán
36 Gastrophryne mazatlanensis
Photo: Christoph I. Grünwald
ELEUTHERODACTYLIDAE ELEUTHERODACTYLIDAE LEPTODACTYLIDAE MICROHYLIDAE
37 Hypopachus ustus
Photo: Jesús Loc-Barragán
38 Hypopachus variolosus
Photo: Jesús Loc-Barragán
39 Lithobates catesbeianus
Photo: Iván Ahumada-Carrillo
40 Lithobates forreri
Photo: Jesús Loc-Barragán
MICROHYLIDAE MICROHYLIDAE RANIDAE RANIDAE

3. Guide to Amphibians of Nayarit, México
Jesús A. Loc-Barragán1
, Iván Ahumada-Carrillo2
and Guillermo A. Woolrich-Piña3
1
Universidad Autónoma de Nayarit, 2
Universidad de Guadalajara, Jalisco, 3
Instituto Tecnológico Superior de Zacapoaxtla, Puebla
3
Photos by: Jesús Loc-Barragán, Guillermo Woolrich-Piña, Iván Ahumada-Carrillo, Christoph I. Grünwald.
Produced by: Jesús Loc-Barragan, Thanks to Christoph I. Grünwald for the support of photograph 36.
© All rights reserved to the authors [j_albert_loc@hotmail.com] and [biolocbarragan@gmail.com].
(M) Male, (F) Female, (Juv.) Juvenile, (L) Larvae and (E) Eggs. [fieldguides.fieldmuseum.org] [784] version 1 06/2016
41 Lithobates magnaocularis (L)
Photo: Jesús Loc-Barragán
42 Lithobates magnaocularis (Juv.)
Photo: Jesús Loc-Barragán
43 Lithobates magnaocularis
Photo: Jesús Loc-Barragán
44 Lithobates megapoda
Photo: Iván Ahumada-Carrillo
RANIDAE RANIDAE RANIDAE RANIDAE
45 Lithobates psilonota
Photo: Iván Ahumada-Carrillo
46 Lithobates pustulosus
Photo: Jesús Loc-Barragán
47 Scaphiopus couchii (Juv.)
Photo: Jesús Loc-Barragán
48 Scaphiopus couchii
Photo: Jesús Loc-Barragán
RANIDAE RANIDAE SCAPHIOPODIDAE SCAPHIOPODIDAE
49 Spea multiplicata
Photo: Iván Ahumada-Carrillo
50 Ambystoma rosaceum (L)
Photo: Iván Ahumada-Carrillo
51 Ambystoma rosaceum
Photo: Iván Ahumada-Carrillo
52 Isthmura bellii
Photo: Iván Ahumada-Carrillo
SCAPHIOPODIDAE AMBYSTOMATIDAE AMBYSTOMATIDAE PLETHODONTIDAE
English: This is the first field guide to the amphibians of Nayarit, intended to help with their identification. It serves as a tool for those interested in the
state's herpetofauna, and highlights the importance of recognizing species that are vulnerable or at risk. It is worth noting that no amphibian in the state of
Nayarit is poisonous.
Spanish: Esta es la primera guía de anfibios de Nayarit para ayudar a identificar, sirviendo como herramienta para todos aquellos interesados en la fauna
silvestre de herpetozoos, resaltando la importancia en conocer aquellas especies que representan algún estatus de riesgo. Tomando en cuenta que para el
estado ninguna especie de anfibio presenta veneno.