Today's creature: The Large Blue Butterfly 🦋 The large blue is a species of butterfly in the family Lycaenidae. The species was first defined in 1758 and first recorded in Britain in 1795. In 1979 the species became mostly extinct in Britain but has been successfully reintroduced with new conservation methods. Eggs are laid on the young flower buds of Wild Thyme. The larvae subsequently burrow into the flower head to feed on the flowers and developing seeds. Females lay eggs on plants growing i