The WWF are reporting that over 1000 new species have been found in the South East Asia's Greater Mekong region.
These include 519 plants, 279 fish, 88 frogs, 88 spiders, 46 lizards, 22 snakes, 15 mammals, 4 birds, 4 turtles, 2 salamanders and a toad. Greater Mekong comprises the six countries the Mekong River flows through which includes Cambodia, Lao PDR, Myanmar, Thailand, Vietnam and the southern Chinese province of Yunnan. It is estimated that thousands of new invertebrate species were also discovered during this period.
You can see a few photos here and here.