The Korea Forest Service's National Arboretum has discovered two new species of the Platypezidae family of flies in Korea, which were until now undocumented. These flies, named 'Norangbaleori-papjakbalpae' and 'Boloknalgaeeori-papjakbalpae', were found in several areas including Chungnam, Gangwon, and Gyeongnam, and are believed to be present nationwide. These flies, which have flat and plump hind legs, are believed to play a crucial role in the ecosystem by serving as parasites, decomposers, and pollinators due to their diet of mushroom fruiting bodies and mycelia. There are approximately 2,400 recorded species of flies in Korea.