I use systematics to study biodiversity in dragonflies with a focus on dragonfly family Aeshnidae, a group that comprises of some of the largest dragonflies. I have particularly concentrated on two genera in this family, Boyeria and Aeshna. Boyeria is distributed in United States, Canada and across the countries around the Mediterranean. My work showed that Boyeria cretensis, found on the island of Crete and Boyeria irene, distributed on mainland Europe and Africa around the Mediterranean, were indeed different species. Until this phylogenetic treatment, these two species were only supported by weak morphological characters. These species presumably became different after the island of Crete separated from mainland Europe. Presently, I am working on systematics of the Holarctic genus Aeshna. Since members of Aeshna are widely distributed across the norther hemisphere, this study has given me opportunities to collaborate with a lot of different labs in United States, Denmark, Sweden and Russia. Lastly, I am spearheading the Trans-odonata subgroup of the 1KITE (One Thousand Insect Transcriptome Evolution) consortium, a group dedicated to unraveling the evolutionary history of all the insects using transcriptomes. I am working with the members of the trans-Odonata group with an aim of resolve the dragonfly and damselfly tree of life.