A New Subspecies of Ground Squirrel (Spermophilus spilosoma) from Tamaulipas, Mexico

"A New Subspecies of Ground Squirrel (Spermophilus spilosoma) from Tamaulipas, Mexico" by Ticul Alvarez is a scientific work that introduces a newly discovered type of spotted ground squirrel in Tamaulipas, Mexico and adds to our knowledge of North American ground squirrels. Alvarez presents evidence supporting the existence of "Spermophilus spilosoma oricolus," a new subspecies identified from specimens found on the eastern Tamaulipas coast. It gives a detailed analysis of the subspecies, comparing its body measurements and physical traits like color and skull size to differentiate it from similar squirrels. The study also explores how the ground squirrel spread to the mainland from a barrier beach, highlighting its unique, isolated presence in the area; this makes work a valuable contribution to the scientific understanding wild animal types and where they live.