S. torquatus is endemic to Mexico
(states of Tamaulipas, Veracruz, Guanajuato, Hidalgo, Michoacan,
Estado Mexico, Morelos, Puebla, and Federal District).
Physical characteristics: Large
sized (18 -20 cm) lizard of mottled olive to gray color, with a
notable black collar bordered on both sides by cream colored thinner
line. In adult males the throat and abdominal section are of distinctive
Parisian blue color. Males are larger than females. Females are
generally less colored, the dorsal side of body similar to males,
ventral side of cream color. Scales are large and keeled.
Food habits: Principal food items
include insects (Coleoptera, Hymenoptera, Diptera, Lepidoptera,
Hemiptera...) but this species also prays on smaller lizards (an
entire individual of Sceloporus aeneus
was found in stomach of one S. torquatus).
Plant matter is also consumed.
S. torquatus is viviparous, otherwise reproduction of this
species is not very well known. Males' testicles seem to show peak
of activity in spring, vitelogenesis in females occurs in autumn.
3 to 7 young per female are usually born after 8 months gestation
period in next year's spring. Sexual maturity is reached in between
the 1st and 4th year.
strictly diurnal lizard with developed territorial behavior. Seems
to live in a close vicinity of a hideaway place (usually a crack
in a rock). The peak activity was observed during the hottest hours
of sunny days.
Habitat: Found in pine forest communities around rock formations
and large boulders, generally in higher altitudes (2500 to 2700
Biomes: temperate forests, mountains