Xenosaurus grandis Gray, 1856, Mexico, near Cordova [= Veracruz]. Five subspecies are recognized: X. g. agrenon, X. g. ar-boreus, X. g. grandis, X. g. rackhami, and X. g. sanmartinensis.
OTHER COMMON NAMES None known.
In general form X. grandis is similar to other xenosaurids, although it differs in some aspects of scalation and dorsal coloration. Xenosaurus grandis also has strikingly red eyes.
Xenosaurus grandis has the largest geographic range of any xenosaurid, ranging from west-central Veracruz, Mexico, to Guatemala. However, it is possible that X. grandis is actually composed of several, as yet undescribed, species.
Xenosaurus grandis is one of the more solitary species of xenosaurids, with the vast majority of individuals living alone in their crevices.
FEEDING ECOLOGY AND DIET
Xenosaurus grandis eats a wide range of arthropods.
I Xenosaurus grandis I Xenosaurus newmanorum
The reproduction of X. grandis has been studied in two populations, one in Veracruz, Mexico (X. grandis grandis), and one in Oaxaca, Mexico (X. grandis agrenon). The Veracruz population has the largest litters in the family (mean = 5.1), whereas the Oaxaca population has a litter size similar to the rest of the family (mean = 3.2).
Unknown, but likely susceptible to habitat changes.
SIGNIFICANCE TO HUMANS None known. ♦
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