Chinese scientists discover new dragonfly sub-species

Chinese scientists have claimed to discover three new indigenous sub-species of ancient dragonfly who do not like sunshine and only becomes active after dusk.

The sub-species, which are found nowhere else in the world except than country's Shennongjia Nature Reserve in Hubei province, live only in the relatively pristine streams of water, state run Xinhua news agency reported quoting Zhang Haomiao, an aquatic animal researcher from the Chinese Academy of Social Sciences.

Zhang said the sub-species can be used to monitor water quality, as they live only in the relatively pristine streams of Shennongjia and cannot tolerate polluted water.

The findings have been published in the International Journal of Odontology.