The Amphibians and Reptiles of Sinaloa, Mexico - Smithsonian ...

78 UNIVERSITY OF KANSAS PUBLS., MUS. NAT. HIST.
Sinaloa and Nayarit indicate a wide range of variation in color and
pattern. The dorsal ground color varies from pale brown or tan
to dark brown or gray-brown. Dorsal mottling is variable; some
specimens lack distinct dorsal pattern but have a few dark brown
flecks laterally; others show all degrees of pattern from fine brown
or dark brown mottling to individuals with large distinct reticulations.
No specimens have an interorbital bar. All show some brown
mottling on arms and legs, tending to form distinct bands in many
individuals. None of the differences in pattern and color in the
preserved material could be attributed to geographic variation.
It is suspected that much of this color variation can be attributed
to the various methods of preservation. There is also considerable
variation in the size of the metatarsal tubercles. Because of the
lack of detailed color notes from living individuals over a wide
geographic range of the species and the variation present in the
preserved material, we refrain from assigning the Sinaloan population
to a subspecific status.
Distribution in Sinaloa.—Known from several localities along the
Concordia-Santa Lucia road. See Fig. 17.
Specimens examined.—3 mi. NE Copala (RGW 3056-57); 1 mi. NE Copala
(RGW 3670); 3.4 mi. NE Concoidia (CSCLB 620-23); Santa Lucia, 1100 m.
(• KU 75263-72) j 1 km. NE Santa Lucia, 1150 m. (• KU 78257); 1 km. NE
Santa Lucia {CSCLB 1712-14); 2.2 km. NE Santa Lucia, 1150 m. (*KU
78258); 16.9 mi. W Santa Rita (LACM 6234-35); 19.6 mi. NE (by road)
Vffla Union (LACM 6233); 47,2 mi. NE Villa Uni6n (CSCLB 624).
Additional records.—5 mi. E Copala (CAS 91939-55); Santa Lucia, 1100 m.
(KU 80320).
Tomodactylus nitidus petersi Duellman
Tomodactylus petersi Duellman, Occas. Papers Mus. Zool., Univ. Michigan,
560:5, October 22, 1954 (type locality, one fourth mile east of Coalcoman,
Michoacan).
Tomodactylus nitidus petersi: Dixon, Texas Jour. Sci., 9:390, December 4,
1957.
Remarks.—Specimens of Tomodactylus nitidus petersi from the
eastern Sinaloan highlands are melanistic and agree in all characteristics
with those examined by Dixon (1957b:385). Webb and Baker
(1962:330) recorded this subspecies from mixed boreal—tropical
forest in Durango.
Distribution in Sinaloa.—Known only from the southern highlands.
See Fig. 18.
Specimens examined.—0.5 km. S Santa Lucia (CSCLB 1719); 0.9 mi. W
Santa Rita (LACM 6236); 1.2 mi. W Santa Rita (LACM 6238); 3.5 mi, W
Santa Rita (LACM 6237); 47.2 mi. NE Villa Union (CSCLB 1718).
Literature records.—49 mi. NE Concoidia, 4800 ft. (Dixon, 1957a:64);
"mountains of eastern Sinaloa," 5600 ft. (Dixon, 1957b:385).