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

AMPHIBIANS AND REPTILES OF SINALOA, Mixioo 199
Literature records.—Ahome {Bogert and Oliver, 1945:403); 9 mi. N Mazadao,
100 ft. {Zweifel, 1954b:I47); San Bias (Smith, 1941a:9 and 1943a:467);
Yeoorato (Smith, 1941a:ll; Bogert and Oliver, 1945:403).
Additional records.—Culiacan (MVZ 70273); 16 mi. SE Los Mochis (SM
11153); 9 mi. N Mazatlan (MVZ 59287); 10 mi. S Villa Union (MCZ 61428).
Sonora aemula (Cope)
Procinura aemula Cope, Proc. Amer. Philos. Soc, 18:262, 1879 (type locality,
Batopilas, Chihuahua).
Sonora aemula, Bogert and Oliver, Bull. Amer. Mus, Nat. Hist., 83:371,
March 30, 1945.
Remarks.—Charles H. Lowe, Jr., obtained an adult male north
of Culiacan on September 1, 1956. On August 25, 1966, Lynn W.
Robbins found an adult female (DOR) near Cerro Prieto at 1745
hours. These specimens are the first and second records for the
state and have the following characteristics, respectively: 145 (?),
156 ventrals; 40, 36 subcaudals; 18-15-15, 17-15-15 dorsal scale
rows; single, divided anal plate. Roth specimens have 7-7 supra*
labials, 7-7 infralabials, 1-1 loreals, 1-1 preoculars, 2-2 postoculars,
and 1 + 2 temporals. On one specimen (LACM 28714) the dorsal
scales are smooth anteriorly with keeling apparent at about ventral
number 125 and increasing posteriorly to the strongly keeled tail;
the total length is 414.5, tail length 60, and tail length to total length
ratio is 0.17. The other specimen has smooth anterior dorsal scales
that become keeled at the sixth black band and are progressively
more keeled to the tail; the nasal is complete.
The coloration and pattern of LACM 28714 is as follows: dorsum
red, with black spot on most dorsal scales; red caudal scales nearly
lacking black pigment; a single dyad, beginning at ventral 147 and
continuing to ventral 152, consists of 2 black bands separated by
a white band, each band two scales long on midline; tail tip white,
preceded by a narrow (2 scales long) black band; ventrals white
with slight reddish wash on lateral edges; slight black pigmentation
at position of dorsal dyad; subcaudals uniform reddish, except
where black band nearly encircles tail tip; black spot covers most
of parietals, frontal, supraoculars, and encircles eye; three scales
behind the parietals is a black band three scales wide extending
2JB scales below angle of mouth; snout, labials, and chin white.
The other specimen has nine black bands, 3-6 scales long (longer
posteriorly), on body with the second and third bands separated
only by a dirty white band two and one-half scales long; the body
bands are incomplete across the belly anteriorly, but complete at
midbody and posteriorly. The interspaces between the black bands