Entomologists have relied on butterfly and moth specimens gathered by amateurs since the 1800s, but the decline of the hobby and a shift to photography could make conservation research more difficult
Source:
https://www.newscientist.com/article/2266881-decline-of-butterfly-collecting-hobby-threatens-conservation-research/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home