S. Mahunka szerk.: Folia Entomologica Hungarica 58. (Budapest, 1997)

Table 1 (continued) Tarsonemid mite species Plant species Locality of collection Date of collection Tarsonemus sp. 1 near pyrrhidi Populus nigra Kispest 11. VII. 1992 Schaarschmidt, 1959 Salix alba Kőbánya 16. V. 1993 Tarsonemus sp. 2 near evodiae Juniperus sp. Őrmező 13. II. 1995 Ito, 1964 Tarsonemus sp. 3 near ter this Juniperus sp. Őrmező 13. II. 1995 Suski, 1967 Cases of co-occurrence of tarsonemids with eriophyoids are summarised in Table 2. Out of 74 plant samples where tarsonemid mites were collected from, a number of 39 (53%) were supplied also with eriophyoid mites. Eight Dendroptus species were found with eriophyoids in 16 samples (21% of all tarsonemid positive samples and 41% of tarsonemid + eriophyoid samples), while nine Tarsonemus species were found in 26 samples containing eriophyoids (35% and 66% respectively). Comparison of the number of all Dendroptus positive samples (21) related to Dendroptus + eriophyoid positive (16) with the same for Tarsonemus (88 vs. 26) yields the 76% of association with Eriophyoidea for Dendroptus while for Tarsonemus this figure is 30%. These proportions support the idea of close biological relationship between species of Dendroptus and eriophyoid mites. On Salix and Populus spp. only representatives of Tarsonemus were found. Among the investigated tarsonemids, Tarsonemus karli and T. waitei were found together with Pseudaulacaspis pentagona (Insecta: Coccoidea), Tarsonemus lobosus with Aulacaspis rosae and Pseudaulacaspis pentagona, Tarsonemus nodosus, with Epidiaspis leperii, Pseudaulacaspis pentagona, Quadraspidiotus ostreaeformis and Unaspis euonymi, Dendroptus willmanni with Pseudochermes fraxini and the Dendroptus sp. 2 with Phenacoccus aceris and Pseudochermes fraxini. On linden trees, Dendroptus willmanni, Dendroptus sp. 5 and Tarsonemus waitei were often collected from leaves infested with Eotetranychus tiliarium (Acari: Tetranychidae). On the underside of the leaves of Corylus colurna, Dendroptus sp. 5 and Tarsonemus waitei were present together with Eotetranychus coryli. On Padus avium individuals of Tarsonemus lobosus were found together with Tetranychus viennensis, while on Malus domestica T. karli and T. nodosus with Panonychus ulmi. Out of the 20 tarsonemid species, the vast majority - all Dendroptus and nine Tarsonemus were found to coexist with eriophyoid mites (Table 2). The presence of the tarsonemid mites together with gall mite species living on the leaves, shoots, flowers and buds of willow, ash, poplar, maple and hazel was found. Another group of the eriophyoid species forming no gall, erineum, lives freely and can be found together with several other tarsonemid species on the underside of the leaves. Mixed population of tarsonemid species was also frequently found. DISCUSSION The Hungarian fauna of species of Tarsonemidae has not been so far investigated extensively, however, it still remains one of the best known among European countries. The papers published up to the present report species in soil and on raised vegetation