Celastrina Argiolus - The Holly Blue Butterfly (female) - flight, laying eggs 

Nature - Wild Life - Insect life -Butterfly. The holly blue is the national butterfly of Finland. Found in Eurasia. In South Asia, it occurs from Chitral in Pakistan to Kumaon in India. The holly blue is subject to marked population cycles which appear to be caused by interactions with the parasitoid ichneumon wasp Listrodromus Nycthemerus. The wasp lays an egg on a holly blue caterpillar, inserting the egg into the caterpillar's body and the adult wasp emerges from the chrysalis, killing the chrysalis before its emergence. The population of the butterfly is tracked by that of the wasp, when butterfly populations are low the wasp population falls and this allows the butterfly population to increase and the population of Listrodromus Nycthemerus can increase as there are more hosts available to be parasitized. As more caterpillars are parasitized the butterfly population crashes. This butterfly is found in many different types of habitat, including gardens, churchyards, woodland, parks, and anywhere its foodplants and nectar sources can be found. In my video you can see how it lays eggs and the flight.
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