Phengaris atroguttata, the great spotted blue,[1][2] is a small butterfly found in India, Myanmar,[3] and China that belongs to the lycaenids or blues family.
The butterfly was earlier known as Polyommatus atroguttata (Oberthür).[3]
It is found in Nagaland and the Chin Hills of Myanmar[3][4] and is considered rare.[4]
The butterfly ranges from 44 to 48 mm. The butterfly is white with pale blue suffusion, and, also a dark border on the forewing. The male butterfly has very large black discal spots showing through from below. These are darkened in above in the case of the female butterfly.[4]
Media related to Phengaris atroguttata at Wikimedia Commons
Phengaris atroguttata, the great spotted blue, is a small butterfly found in India, Myanmar, and China that belongs to the lycaenids or blues family.
Underside 
Upperside
