These tarantulas are a newly identified species in Arizona. A male and a female Aphonopelma ... in the southwestern United States and the Sierra Madre Occidental in northwestern Mexico.

Scientists have found a new species of tarantula, a red-reared arachnid, in Arizona, and the discovery ... United States and then to the Sierra Madre Occidental in northwestern Mexico.

Why settle for one canyon in Arizona when you can have six in ... Formed over millennia, the Sierra Madre Occidental rose through tectonic activity, with volcanic eruptions sculpting its rugged ...

Parts of Arizona, including the sky island forests ... The Northern Jaguar Project maintains a reserve in the Sierra Madre Occidental, a relatively wetter mountain landscape than Arizona ...

The sky island mountain ranges of Arizona are home to a subspecies ... get more Gould’s was from their core habitat in the Sierra Madre Occidental, some 250 miles south of the border.

A brand new species of tarantula has been discovered lurking in southeastern Arizona. The new species ... the southwestern United States and the Sierra Madre Occidental in northwestern Mexico.