[Kostic]

> All the Slavic languages known to Google Translate have a word related to motyl, except for Russian

In Serbian and Croatian the word for butterfly is лептир/leptir.

[pbhjpbhj]

Which relates to the Greek word used as a base for lepidopterist?

https://en.m.wikipedia.org/wiki/Lepidopterology

[jjtheblunt]

pt*r being PIE wing as in pterodactyl ?