AmphibiaWeb - Thorius grandis


(Translations may not be accurate.)

Thorius grandis Hanken, Wake & Freeman, 1999
family: Plethodontidae
subfamily: Hemidactyliinae
genus: Thorius
Thorius grandis
© 2010 Sean Michael Rovito (1 of 5)
Conservation Status (definitions)
IUCN Red List Status Account Critically Endangered (CR)
National Status None
Regional Status None


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Country distribution from AmphibiaWeb's database: Mexico

bookcover Excerpts from Les Urodèles du Monde, 1st and 2nd editions and more recent updates, by Jean Raffaëlli (©2007, ©2014 by Jean Raffaëlli), used with permission. The 2nd edition of this book is available directly from the author: and from this website.

Author: Jean Raffa�lli

Thorius grandis Hanken, Wake et Freeman, 1999

Grande forme de la Sierra Madre del Sur occidentale (Guerrero). Proche g�n�tiquement de T. omiltemi (Nei D = 0,21). Aspect robuste. Dents pr�sentes sur les maxillaires chez les femelles uniquement. Les femelles ont en outre des os cr�niens beaucoup plus d�velopp�s que les m�les. 3,06 cm SVL. Narine ovale de taille mod�r�e. Museau pointu. Membres mod�r�s, doigts et orteils libres � leur extr�mit�. Queue �paisse et assez courte, de la taille du reste du corps. Flancs bruns devenant plus clairs vers le ventre, bande dorsale jaune � rouge�tre l�g�rement plus large que chez T. omiltemi, recouverte de petites taches blanches plus pr�sentes sur les bas flancs. Les taches deviennent de grande taille sur les parties ventrales qui sont brun clair. Une tache noire en forme de V ou de Y sur le dessus de la t�te. Sous les �corces et dans les troncs � terre dans les for�ts mixtes pins/sapins/ch�nes des versants du Cerro Teotepec entre 2 500 et 3 360 m, entre les environs de Jiguero � l�est et de Puerto del Gallo � l�ouest. Une autre localit� � Cerro Toro Muerto, � environ 10 km � l�ouest du Cerro Teotepec. 37 km2. EN. Encore abondante. Le placement sous protection de la zone allant de Milpillas � Atoyac est urgent. Trois sp�cimens ont �t� trouv�s dans l�estomac d�un colubride, Rhadinophanes monticola.


Big species (relatively to the genus) of the western Sierra Madre del Sur (Guerrero). Genetically close to T. omiltemi (Nei D=0.21). Robust looking. Teeth are present on the maxillary in females only. Females have cranial bones that are way more developed than males. 3.06cm SVL. Medium size, oval nostril. Pointy snout. Limbs of moderate size with fingers and toes free at their extremity. The tail is thick and rather short, equaling the rest of the body. Flanks are brown and become lighter towards ventral parts. There is a yellow to red dorsal stripe a little bit wider than in T. omiltemi. It is covered with white spots which are more numerous towards the posterior flanks. Spots become bigger on the ventral parts which are light brown. There is a V or Y shaped spot on the top of the head.

Habitat & Range : It can be found under logs or fallen trunks in mixed pine/oak forests of the Cerro Teotepec between 2500 and 3360m asl, in the surroundings of Jiguero (east of the range) and of Puerto del Gallo (west). Another locality (Cerro Toro Muerto) is known, around 10km east of Cerro Teotepec. 37Km². Three specimens were found in the stomach of a colubrid ( Rhadinophanes monticola).

Conservation : Endangered. It is still abundant. It is urgent to protect the area from Milpillas to Atoyac.

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Citation: AmphibiaWeb. 2024. <> University of California, Berkeley, CA, USA. Accessed 26 May 2024.

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