The Amphibians and Reptiles of Michoacán, México — John Shaqi
The Amphibians and Reptiles of Michoacán, MéxicoDuellman, William Edward
Science
The Amphibians and Reptiles of Michoacán, México
Duellman, William Edward
Amphibians -- Mexico -- Michoacán de Ocampo; Reptiles -- Mexico -- Michoacán de Ocampo
Fourteen specimens from the pine-oak forests around Dos Aguas (UMMZ
118503-10, 121498-9) have reddish brown dorsal color and a narrow
cream-colored middorsal line (Pl. 5, Fig. 2). Twelve of these specimens
are adult males having snout-vent lengths of 20.7 to 24.6 (22.5) mm. One
female has a snout-vent length of 24.8 mm., and one juvenile has a
snout-vent length of 14.5 mm. Six specimens are from a region of mixture
of pine-oak forest and arid tropical scrub forest at 18 kilometers east
of Dos Aguas (UMMZ 121497, 121500). All are males having snout-vent
lengths of 18.0 to 22.6 (20.7) mm. The dorsum is tan marked with black;
the thighs are yellowish orange.
The specimens from 18 kilometers east of Dos Aguas were found on July
22, 1960, by Floyd L. Downs and John Winklemann, who collected calling
males of _Tomodactylus rufescens_ and _Tomodactylus nitidus petersi_ at
the same locality. Downs (_personal communication_) stated the call was
a single note. At Dos Aguas I heard _T. rufescens_ give two calls, one a
single "peep," the other a triple note--"pee-ee-eep."
In the higher parts of the Sierra de Coalcomán _Tomodactylus rufescens_
seems to fill the same niche as _T. angustidigitorum_ does in the
Cordillera Volcánica. At lower elevations in their respective mountain
ranges the species occur sympatrically with _T. nitidus petersi_.
~Diaglena reticulata~ Taylor
_Diaglena reticulata_ Taylor, Univ. Kansas Sci. Bull.,
28:60, May 15, 1942.--Cerro Arenal, Oaxaca, México.
Nueva Italia (3); Ostula (7).
Until recently frogs of the genus _Diaglena_ were known only from a few
specimens from southern Sinaloa (_Diaglena spatulata_) and from the
Pacific lowlands of the Isthmus of Tehuantepec (_Diaglena reticulata_).
Peters (1955a) reported specimens from Ostula, Michoacán, and compared
these specimens with one _D. reticulata_ from Tehuantepec, Oaxaca, and
four _D. spatulata_ from Sinaloa. This comparison showed that the
specimens from Michoacán, although showing some minor differences from
_D. reticulata_, are closer to that species than to _D. spatulata_.
Subsequent to Peters' work, series of both species of _Diaglena_,
including additional specimens from Michoacán and from Colima, have been
collected, and a more qualified comparison is now possible.
Public-domain text, read in full here on John Shaqi.
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