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

132 UNIVERSITY OF KANSAS PUBLS., MUS. NAT. HIST.
(one or both sides) and four of those reductions were from the
vicinity of El Fuerte. Several specimens from Sinaloa do not exhibit
the dorsolateral striping assumed to be characteristic of boulengeri
{Tanner and Robison, 1959:77). Smith (1939c: 130-31) indicated
that females of S. clarkii boulengeri have dorsolateral stripes
but males "become more or less uniform light straw color above"
(p. 131). The type specimen of uriquensis is an adult male.
On the basis of a more complete understanding of the variation in
Sceloporus clarkii boulengeri in Sinaloa, the intermediate condition
in some characters of specimens from the Rio Fuerte drainage, the
probable continuum of distribution of S. clarkii throughout the Rio
Fuerte drainage (including Urique), and the latitude of variation of
Sceloporus darkii uriquensis (as shown by the three topotypes discussed),
we find extensive overlap in the characters utilized by
Tanner and Robison to diagnose the Urique specimens. Therefore,
we place Sceloporus clarkii uriquensis Tanner and Robison in the
synonymy of Sceloporus clarkii boulengeri Stejneger.
Sceloporus clarkii boulenger is arboreal and commonly found on
trunks of coconut palms along the coast. The lizards are wary and
often retreat to the upper branches when disturbed, Taylor (1938:
520) found S. c. boulengeri in 'large trees that stood isolated in
pasture fields" near Presidio and Mazatlan. Langebartel and Smith
(1954:130) recorded boulengeri in "dense cactus and thorny scrub
thickets of the west coast." Lewis and Johnson (1956:278-79) found
boulengeri 10-15 feet above the ground in mesquite trees near
El Carrizo (northern Sinaloa), and in thorny broadleaf trees and
acacias and along fence rows north of Mazatlan. Newly hatched
young were found at Teacapan in early September.
Distribution in Sinaloa.—Relatively abundant throughout the
state. See Fig. 48.
Specimens examined.—Ahome (UCLA 13909, 13920-22, 13928-32); 1 mi.
NE Ahome (UAZ 9389); 1.5 km. SE Camino Real, Rio Piaxtla, 120 m. {* KU
63692); E base Cerro Pocitos, 17.5 mi. W Pericos June. (UAZ 4373); 16 km.
NNE Choix, 520 m. ("KU 73696-98); Colonia de la Reforma, 19.7 mi. W
Techa junc. (UAZ 14363); 1 km. S Concepci6n, 77 m. ('KU 63678-91); 8.3
mi. ENE Cc-ncordia (UAZ 14255-57); 6 km. E Cosala, 460 m. (* KU 73699-
701); Culiacan (LACM 8637-39); N Culiacan (CSCLB 2078-81); 7.8 mi. N
Culiacan (CSCLB 2100-01); 19 km. N Culiacan, 120 m. ('KU 40401-02,
40405-06); 55 km. N Culiacan ('KU 40400); 46 mi. S Culiacan (CSCLB
2073); 18 km. NW Culiacan, 30 m. ("KU 6754146); 53 mi. NW, 1 mi. E
Culiacan (UAZ 2335-37); 53 mi. NW, 2.7 mi. E Culiacan (UAZ 2339); 32
km. SSE CuliacAn ('KU 37632); 6 km. NE El Fuerte, 150 m. ("KU 77811-
36, 77842); 8 km. NE El Fuerte, 160 m. ('KU 77837-41); 36 mi. NW Elota
(UAZ 2338, 2340, 2465); 5 km. SW ElPalmito, 1850 m. ('KU 75568);
Escuinapa (LACM 8640-44); 5 km, NW Escuinapa, 150 m. ("KU 73707);