This application (2015) is technically DEPRECATED and is no longer SUPPORTED by the author. The new (native) version of 2021 (free with in-app purchases) is located at: https://play.google.com/store/apps/details?id=en.ecosystema.butterflies
This version is saved in the store for the convenience of users who installed the application in the period 2015-2021. It can be restored on any smartphone linked to a Google account.
Detailed description of the key and list of species: http://ecosystema.ru/04materials/guides/mob/and/08butt.htm
Video review of the app: https://youtu.be/vwlQ6tgjAhA
Ecosystem on FB: https://www.facebook.com/Ecosystema1994/
