I love the presentation of this paper: "Learning and Memory in Lepidoptera"
- Martha Weiss (Georgetown University, Washington D.C., USA) and Jo Nagai (Ibuki Elementary School, Kobe, Japan)
A good summary is here: https://timesofindia.indiatimes.com/science/did-the-butterflies-remember-him-japanese-students-discovery-uncovers-astonishing-insect-memory/articleshow/132304921.cms