S. Mahunka szerk.: Folia Entomologica Hungarica 59. (Budapest, 1998)

1. Low light intensity, cool microclimate, high humidity level just at the soil both in juvenile and mature life stages. More frequently they are hidden under stones and branches: Nemastoma lugubre, Nemastoma bimaculatum, Lophopilio palpinalis. 2. Diffuse light in wide amplitude of temperature and less humidity. They live at the soil level: Trogulus tricarinatus, Zacheus crista. 3. Much light and higher temperatures. They prefer the open plant communities, tolerating the low humidity level. They spend the juvenile stage on the soil surface but as adults live in the shrub layer or on the bark of the trees: Phalangium opilio, Opilio parietinus, Lacinius horridus. 4. High humidity level, but may occur in drier habitats too, providing the temperature is not to high. They are on the soil surface as juvenile individuals but later climb up to 3 meters on the tree trunks: Astrobunus laevipes, Rilaena triangularis, Oligolophus tridens. DISCUSSION The three biotopes may be characterised well with their Opiliones species, too. The sessile oak - turkey oak forest can be found on the north part of brook Rakaca on a slight slope. The species composition of the three traps in the forest differs significantly so we should consider them microhabitats (Table 1, Fig. 2): E

1 : grass patch edging with shrubs with low canopy cover E3: with 70% canopy cover E2: with 100% canopy cover El: Sciophilous species dominate the sample of this dry and light microhabitat throught the year: Lacinius horridus, Phalangium opilio. In spring and at the beginning of the summer: Zacheus crista, Rilaena triangularis; only in autumn: Astrobunus laespecies Fig 2. The distribution of species between the three biotopes in 1992. The species belonging to the numbers are given in Table 1