The temperate forests of the Sierra Madre del Sur are an unparalleled center of endemism and biodiversity in Mexico. Many of the 350 species of orchids in this region can be found nowhere else in the world. The same is true for many other species of plants, birds, mammals, amphibians, reptiles, and insects such as beetles and butterflies. This is one of the richest areas in butterfly species in the Mexican Pacific, with more than 160 species including the Pacific dotted-blue and Pacific orange tip butterflies.
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