Callosciurinae refers to a subfamily of squirrels native to the regions of Southeast Asia. This subfamily encompasses over 100 species of tree squirrels known for their gorgeous coat colors and fantastic eating habits. However, if you're searching for synonyms for Callosciurinae, you might come across some alternative terms. They include the Sciurinae or the common tree squirrel subfamily, the Pteromyinae, which refers to flying squirrels, and the Ratufinae, which includes giant squirrels. Looking at the synonyms of Callosciurinae, it's clear that this subfamily of squirrels is one of the most diverse and widespread among its cousins.