I have been working on migratory butterflies and need to compare the geographic distribution of butterflies and where the migration is taking place. For this reason, I need to find out the distribution of a few hundred butterflies.
I know, GBIF can be a good resource, but I am unaware how to check more than 8-9 countries at once. Well, it's possible to go through the datasets; unfortunately, it will cost a lot of time to complete that way.
This is why I am looking for any kind of resource to actually find the complete distribution of butterfies around the world.