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  • Author or Editor: G. Ripka x
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Author made a regular mite collectings between 1990 and 2004 on ornamental trees and shrubs, on streets, parks, green spaces of housing estates, botanical gardens and private gardens, in various localities of Hungary. During this survey a new tree-infesting Rhinophytoptus and a new Epitrimerus species were collected: Rhinophytoptus szechenyii n. sp. and Epitrimerus pilisensis n. sp. are described and illustrated from Koelreuteria paniculata and Abies sp., respectively. A member of the genus Nalepella is recorded for first time from the Hungarian fauna.

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Author made a regular mite collectings between 1990 and 2009 on ornamental trees and shrubs, on streets, parks, green spaces of housing estates, forests, botanical gardens and private gardens, in various localities of Hungary. During this survey a new tree-infesting Calepitrimerus species was collected: Calepitrimerus mathiasrexi n. sp. is described and illustrated from Sorbus torminalis . Acaricalus cerriquerci is a new species for the fauna of Hungary.

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Author made regular mite collectings between 1990 and 2010 on ornamental trees and shrubs, on streets, parks, in city greenery, forests, botanical gardens and private gardens, in various localities of Hungary. During this survey a new Quercus-infesting eriophyoid mite species was collected: Brevulacus carpathicus n. sp. is described and illustrated from Quercus petraea. Rhyncaphytoptus cerrifoliae Farkas is redescribed from Quercus cerris. Both species produce wax and are vagrant on the leaf undersurface. Two other species, viz. Aceria cichorii Petanović, Boczek et Shi and Cecidophyes tristernalis (Nalepa) are new species for the fauna of Hungary. Some faunistic data on the known taxa from this country are included.

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Three new species of eriophyoid mite, Aceria cumanorum n. sp., associated with Limonium gmelinii ssp. hungaricum (Plumbaginaceae), Aceria feketeistvani n. sp. associated with Petrorhagia prolifera (Caryophyllaceae) and Aceria belarexi n. sp. on Gypsophila paniculata (Caryophyllaceae) are described and illustrated from Hungary. Morphological differences distinguishing these new species from similar Aceria species are discussed. In addition, new date-locality-host records for 9 eriophyoid species are given.

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Female of Aculus scutellariae (Canestrini et Massalongo, 1895) is redescribed, male and nymph are described and illustrated. It was collected from Scutellaria hastifolia L. (Fam. Lamiaceae) in Hungary.

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Leipothrix polygalae (Farkas, 1968) n. comb. is redescribed and illustrated. It was collected from Polygala amara subsp. brachyptera (Fam. Polygalaceae) in Hungary.

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Based on literature records, the Hungarian aphid and psyllid fauna consist of 594 and 73 species, respectively, with 802 and 98 host plants of aphids and psyllids also known.

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Author made regular insect collections between 1990 and 2011 especially on ornamental trees and shrubs, furthermore on herbs, in streets, parks, in city greenery, forests, botanical gardens and private gardens, in various localities of Hungary. Bactericera modesta (Foerster) is a new species for the fauna of Hungary.

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Author made a regular mite collectings between 1990 and 2003 on ornamental trees and shrubs, on streets, parks, green spaces of housing estates, botanical gardens and private gardens, in various localities of Hungary. During this survey two new tree-infesting Cecidophyes and Eriophyes , a new Rhyncaphytoptus and Aceria species were collected: Cecidophyes siculus n. sp., Cecidophyes sanctiregisladislai n. sp., Eriophyes avaricus n. sp., Eriophyes hunniacus n. sp., Rhyncaphytoptus arpadi n. sp., and Aceria magyarica n. sp. are described and illustrated from Acer pseudoplatanus, Quercus robur and Quercus cerris, Platanus hybrida, Pinus nigra, Quercus robur , respectively.

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Based on records in the literature, a checklist of the Psylloidea of Hungary (20 genera and 67 species) is presented, completed by a list of 98 host species of 24 plant families.

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