Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz (2002) 75, 11-12

Malgorzata Skrzypczynska (2002)
Studies on insects and mites causing galls on the leaves of common ash Fraxinus excelsior L. in the Ojców National Park in Poland
Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz 75 (1), 11-12
Abstract: The occurrence frequency of galls caused by insects and mites on the leaves of Fraxinus excelsior L. was investigated, based on leaf samples collected in the Ojców National Park in 2000-2001. The species composition of galls was identical in two consecutive years. Galls were caused by 5 species a total of 2881 galls. The most numerous species was Dasineura fraxinea (Kieffer) in both years.
Index of occurrence frequency and Agrell's index of species co-existence have been calculated. This index reached the highest values in case of Dasineura fraxinea and Vasates fraxini (Nalepa) in 2000 as well as D. fraxinea and Psyllopsis fraxini (L.) in 2001.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Malgorzata Skrzypczynska

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Dasineura fraxinea	Ash (Fraxinus)	Poland
	Vasates fraxini	Ash (Fraxinus)	Poland
	Psyllopsis fraxini	Ash (Fraxinus)	Poland