First record of Dryocosmus kuriphilus in Slovenia
Dryocosmus kuriphilus (Hymenoptera: Cynipidae - EPPO Alert List) was probably introduced into Slovenia on young chestnut plants (Castanea sativa) imported at a dormant stage in autumn 2004. In spring 2005, damage was locally observed on the young trees which had already been planted. The presence of D. kuriphilus was confirmed at 2 locations (Nova Gorica and Krško) and emergency measures were taken. Trace-back studies were done. From the 1250 Castanea plants of the original consignment, 640 plants could be retrieved and were inspected. As a result, 10 young trees at 4 locations in 3 regions were found infested by D. kuriphilus. In 2006, a systematic survey was done at all locations where the pest was previously found, as well as in other critical areas all over Slovenia. By the end of May 2006, no new findings were reported. The situation of Dryocosmus kuriphilus in Slovenia can be described as follows: Transcient, under eradication.
NPPO of Slovenia, 2006-05.