Basically some of the species found in North America that are also found in Europe will now be recognized under different names as detailed in the paper above.
Lasius alienus = Lasius americanus
Lasius flavus = Lasius brevicornis
Lasius umbratus = Lasius aphidicolus
Leptothorax muscorum = Leptothorax canadensis
Here are the pages from the paper:
Click to enlarge.
Thanks to AnthonyP163 for bringing this up in General Chat.
Edited by LC3, July 2 2018 - 11:02 PM.