Featured animal: Terrapene nelsoni, spotted box turtle
This species is possibly the least know of all the box turtles. It is endemic to northwest Mexico. Read more about it in this 2011 paper Terrapene nelsoni Stejneger 1925 – Spotted Box Turtle, Tortuga de Chispitas, Tortuga de Monte.
Terrapene nelsoni seems to only be active in Sonora during the wetest part of the monsoon season, primarily the later part of July through early Sept. See more photo of these species in this Terrapene nelsoni gallery.