=Eleutherodactylus alfredi= Boulenger
_Oaxaca_: Tolosita (2). _Veracruz_: 35 km. SE of Jesus
Carranza (6).
These specimens were collected in rainforest. Shreve (1957:247) pointed
out the close resemblance between _E. alfredi_ and _E. conspicuus_ from
Piedras Negras, Guatemala, and treated them as subspecies. Examination
of the specimens from the isthmus, together with seven from central
Veracruz and one from Teapa, Tabasco, suggests an even closer
relationship. _Eleutherodactylus conspicuus_ was diagnosed by Taylor
and Smith (1945:567) as differing from _alfredi_ "in lacking a tarsal
fold, in having shorter hind legs with the tibiotarsal articulation
reaching only to the nostril instead of beyond the tip of the snout;
the vomerine teeth barely reach the posterior level of the choanae."
The specimen from Teapa has the vomerine teeth reaching to the
posterior edge of the choanae; in the eight specimens from the isthmus
the teeth reach the posterior edge of the choanae in two and to the
middle of the choanae in six; in seven specimens from central Veracruz
the teeth reach the posterior edge of the choanae in two and to the
middle in five. The tibiotarsal articulation extends beyond the tip of
the snout in the specimen from Teapa and in two from central Veracruz;
in three specimens from the isthmus and in one from central Veracruz it
extends only to the nostril; in the others it extends to the snout. The
tarsal fold is absent in the specimen from Teapa, in three from the
isthmus, and in all those from central Veracruz; it is weakly present
in the others.
In the light of this evidence there seems to be little justification in
recognizing two species or even two subspecies in this group.
Consequently, _Eleutherodactylus conspicuus_ Taylor and Smith (1945) is
here placed in the synonymy of _Eleutherodactylus alfredi_ Boulenger
(1898), a species with a range extending from Cuautlapan and Potrero
Viejo in central Veracruz southward and eastward in forested habitats
to western El Peten, Guatemala.
=Eleutherodactylus natator= Taylor
_Veracruz_: 35 km. SE of Jesus Carranza (3); 38 km. S of
Jesus Carranza; 55 km. SE of Jesus Carranza.
The snout-vent length is 42.0 mm. in a male and averages 59.5 mm. in
three adult females. The tarsal fold is low and extends about half the
length of the tarsus; the first and second fingers are subequal in
length; the tibiotarsal articulation extends beyond the tip of the
snout. The patches of vomerine teeth lie between the posterior margins
of the choanae. The throat and belly are immaculate, and the soles of
the feet are dark. In the isthmus this species can be distinguished
from _Eleutherodactylus rugulosus_ by less rugose skin on the dorsum
and absence of dark ventral mottling.
The specimens reported here extend the known range of _natator_
eastward from Camotlan, Oaxaca; northward in Veracruz the species
inhabits foothills as far north as Huatusco.
=Eleutherodactylus rhodopis= Cope
Public-domain text, read in full here on John Shaqi.
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