Origin: North America

First finding in Slovenia: 2010

Pathways: spores are accidentally transported with sawing equipment. Secondary spreading with wind and insects.

Possible to identify: June – November

Habitat: Infects only leaves of Plane-trees. Like other powdery mildew species, it is most abundant on sun-exposed leaves which grow in higher temperatures. 

Status in Slovenia: Found in Ljubljana and Bovec, for other parts of Slovenia we do not have data yet.  

Similar species: the lace bug Corythucha ciliata causes widespread damage of leaves of Plane trees. 

Source:  Terenski priročnik za prepoznavanje tujerodnih vrst v gozdovih (Fieldguide for the identification of alien species in forests)

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