I only know the Windows drivers for the ISP programmer board you are using. When I ordered funky hardware from eBay with a non-existent or hard-to-reach OSX driver, I had success with Parallels. This is fun work, but it might be your best bet - many people on the Arduino.cc forums have the same problem .
So: Curse the Gods. Buy parallels. Install windows. Install official Atmel drivers. Write down your bootloader. Return to the building.
As always, if the serial port does not appear in the Arduino development environment, run the following command from the terminal:
ls /dev/tty* | grep 'usb'
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