In 2019, I visited Liesjärvi in spring and summertime. I observed a total of 38 butterfly species of which 33 were seen in summer. This is the highest number of species during one summer since I started my observations in 2003, i.e. 16 years ago.
- The butterfly species Aricia artaxerxes (Lehtosinisiipi) and Perarge aegeria (Täpläpapurikko) were found for the first time.