Made as part of the LIFE Artemis project, a Slovenian project that works on education about invasive exotic species in forests.
They have previously put a Slovenian version of this book online. The new English version is not a literal translation: the entire text has been adapted to an international target group and a number of species have been replaced.
The species descriptions are also posted on the project website.
Yes. https://www.cabi.org/isc/datasheet/115084 in Belarus it was found in 2010 and already considered invasive, though more with agroculture habitats, but it perfectly live both in forests and semi-open habitats. https://www.inaturalist.org/observations/20360403
H. pomatia is considered invasive in many regiions of Russia (European), it prefers sub- urban habits, but you find it in parks and open forests too.
The original document is from Slovenia. This document is translated and some species are added but it was never the goal to add all invasive species, choices have to be madeā¦