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

AMPHIBIANS AND REPTILES OF SMALOA, MEXICO 123
Distribution in Sinaloa.—Known from the northern third of the
state. See Fig. 44.
Specimens examined.—Ahome ('LACM 8645); E base Cerro Prieto, 17.5
mi. W Fericos junction ('UAZ 4206); 16 km. NNE Choix, 520 m. ("KU
73676); 26 km. NNE Choix, 510 m. ('KU 68751); 52 km. N Culiacan
('LACM 28705); 52.5 km. N Culiacan ('LACM 28706-07); 36.8 mi. N
Culiacan ('CSCLB 1981); 43.4 mi. N Culiacan (CSCLB 2125-26); 53.2 mi.
N Culiacan ('UAZ 1521, 1524); 92 km. N Culiacan (' LACM 28708); 42.8
mi. NW Culiacan (• UAZ 1523); 6 km. NE El Fuerte, 150 m. (* KU 77797-
808, 78982); 40 mi. SE Guamuchil ('CSCLB 2148); 9 mi. S Guamuchil
('LACM 25703); Rancho Rosalito ('KU 45397); 1,1 mi. NE Topolobampo
(' UAZ 1522); 0.5 mi. E Topolobampo (° CSCLB 2136); 13 km. NNE Vaca,
400 m. ('KU 80703-05).
Additional records.—5 mi. NNE ElFuerte (ASDM 793); Higuera de
Zaragoza (SDSNH 18192-93); Hiqueres (UCLA 12945); Mocorito (USNM
33571-72); 3.5 mi. N Palmar de Sepulveda (UMMZ 123850).
Ctenosaura pectinata (Wiegmann)
Cyclura pectinata Wiegmann, Herpetologia Mexicana, p. 42, pi. 2, 1834
(type locality, Mexico, by inference; type locality restricted to Colima,
Colima, by Bailey, Proc. U.S. Nat. Mus., 73:25, 1928).
Ctenosaura pectinata: Gray, Catalogue of Lizards . . . Brit. Mus., p.
191,1845.
Remarks.—Adult males of C. pectinata exhibit the following coloration:
head mostly black, sometimes with scattered light scales;
dorsum dark grayish brown with five to seven middorsal blotches;
pale blotches middorsally on neck and shoulders between dark
blotches; hind legs and base of tail black dorsally; ventral surface
of forelegs, chest and belly straw to gray in color; hind legs uniform
gray ventrally; chin mottled gray on greenish white background,
with a black gular stripe; two to five narrow lateral-ventral black
bars, interrupted on the midline. See the account of C. hemilopha
for additional remarks.
Ctenosaura pectinata is common in varied habitat from sea level
to about 300 meters wherever the topography or vegetation provides
adequate cover or retreats. Individuals are common in rock
piles and on stone walls in Mazatlan. Several specimens were dug
from burrows along ravines near Rosario. Apparently these lizards
take to the trees only where adequate ground cover is not available.
The bright green hatchlings were first observed in July and are
abundant in August. The young are unmarked except for black
tail bands, present also on the adults. A female, measuring 135 mm.
in snout-vent length, had lost almost completely the juvenile green
coloration and had attained the typical adult pattern (Scott,
1962:21).