large blue References large blue butterfly Ask Anything Homework Help Also known as: Maculinea arion, Phengaris arion Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: blue butterflyThe large blue (Maculinea arion, or Phengaris arion) spends its larval and pupal stages in an ant nest, emerging in the spring as an adult. Read MoreThe large blue (Maculinea arion, or Phengaris arion) spends its larval and pupal stages in an ant nest, emerging in the spring as an adult. Read More