Ábrahám Levente: Szünbiológiai tanulmányok - Natura Somogyoensis 10. (Kaposvár, 2007)

Kolics Balázs & Kondorosy Előd: Data on the Coleoptera, Heteroptera and Homoptera fauna of the common oak (Quercus robur) - Adatok a tölgy (Quercus robur) bogár poploska és kabóca faunájához

154 NATURA SOMOGYIENSIS long handle, and is 150 cm deep,. Spraying (SP) of groups of trees was used as a complementary method of collecting in order to ensure a wider range of harvested insects, in which pesticides DECIS 2,5 EC (deltametrine), CIPERKILL 25 EC (cypermetrine), Bi 58 EC (dimetoate) were applied in a the dose advised for fruit trees. Insects were taken up with a polyethylene foil put under the trees for several hours. Besides the above mentioned methods, pitfall traps (PT) and light traps (LT) were used, however, with less success. Checking of the fauna of common oak has taken place in Somogy county at the following three collecting places: Görgeteg 1.5 acres, Berzence 2 acres, Lábod 2.5 acres. Each localities was visited in about every second week. Results Species collected on common oak in greater numbers and in both years are presented. The majority of the collected species belong to Coleoptera, while the least we managed to get representatives of the order Homoptera. The most effective was to use an insect net. Altogether 96 species were collected, of which 57 were reported in comprehensive Hungarian studies (GYŐRFI 1963, CSÓKA 1994, CSÓKA 1998, HIRKA et CSÓKA 2002) as well. Thus, the other 39 species (Table 1) were taken into consideration as below. Coleoptera In the family of Curculionidae, Curculio pyrrhoceras (Marsham, 1805) could be a potential pest of acorn. Phyllobius species can have an importance, as their host plants are different tree species. Phyllobius urticae (De Geer, 1775) have not been reported from oak yet. Coccinellidae species living on common oak are concerned with their hosts feeding on oak. Amongst Chrysomelidae, Lachnaia sexpunctata (Scopoli, 1763) occurs on leaves of arboreals, potentially an oak as well. In Tenebrionidae, Isomira species could feed on oak also. They can be found on leaves, Isomira semiflava (Küster, 1852) is a Western European species which was reported only from Slowakia (KASZAB 1957). Platydema violaceum (Fabricius, 1790) lives under bark. Gonodera luperus (Herbst, 1783) is described as potentially living on oak as well (KASZAB 1957). From Cerambycidae, Rhagium sycophanta (Schrank, 1781) has been found as a species potentially harm wood. Xylodrepa quadripunctata (Linnaeus, 1761) is a predator of Lymantria dispar, abundant during its gradations. Heteroptera Mermitelocerus schmidti (Fieber, 1836) feeds on arboreals, thus can oak also be its host. Palomena prasina (Linnaeus, 1758) is polyphagous, feeds often also on trees. Aneurus avenius (Dufour, 1833) feeds on fungi under bark of oak. Homoptera Speudotettix subfusculus (Fallén, 1806) feeds on arboreals, amongst oak is a potential host. Cixius similis (Kirschbaum, 1868) is polyphagous, may feed on young afforestation.