Zoropsis spinimana (Dufour, 1820), de valse wolfspin: exoot of inheems?

Recent records of Zoropsis spinimana in the Netherlands are described and discussed. The number of records has increased over the last years. It is difficult to verify with certainty the origin of an observed specimen as case of import or proof of successful establishment of the species. Recent records are convincing enough to consider it an established species in the Netherlands. Its occurrence outside buildings in the summer and seeking shelter in winter time is expected.