Purple Frog
Nasikabatrachus sahyadrensis was discovered in India 5 years ago. The frog spends most of the year underground, surfacing only for about two weeks, during the monsoon, for purposes of mating. The frog's reclusive lifestyle is what caused the species to escape earlier notice by biologists.
Unlike many other burrowing species of frogs that emerge and feed above the ground, this species has been found to forage underground feeding mainly on termites using their tongue and a special buccal groove.
Here is a male calling:
info: news.bbc.co.uk/2/hi/science/nature/3200214.stm
someone's LJ where they found these things too
news.nationalgeographic.com/news/2003/10/1015_031015_purplefrog.html