I've posted a (very bad) babelfish translation of the classes in the english forum :) Risk Class refers to them not being a native ant and the possibliity of them setting up colony in the uk, which wuld not be good
Camponotus ligniperda likes living in wood, that is true, but you can also keep them in a y-tong nest. Wooden nest are a bit difficult. ;)
This species also have a hibernation period.
I have two Pheidole pallidula ant colony’s both with workers am I able to merge them to make a super colony or will they just kill eachother? I’ve heard you can