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    STUDIA BIOLOGIA - Issue no. 1 / 2005  
         
  Article:   ECOLOGICAL STUDIES ON THE COREOIDEA (HETEROPTERA, INSECTA) IN THE NATURE RESERVE CHEILE TURZII (CLUJ COUNTY).

Authors:  PAUL-VASILE BELDEAN.
 
       
         
  Abstract:  Ecological Studies on the C o r e o i d e a (H e t e r o p t e r a, I n s e c t a) in the Nature Reserve Cheile Turzii (Cluj county). The biological material was collected in the course of 2004. Monthly collections were made during the period May-September. 15 samples were collected from each researched station: oak grove, dry meadow, abrupt meadow, meadow with bushes, riverside coppice. 20 species of Coreoidea were identified, belonging to 12 genera and 4 families. The best represented is the Rhopalidae family, both from the point of view of number of species and from the point of view of number of individuals. The greatest number of species was collected from the meadow with bushes. A result of the calculation of the numerical and relative abundance, the best represented species are: Stictopleurus crassicornis, S. abutilon, Coreus marginatus, Rhopalus parumpunctatus and R. subrufus. Out of the 20 reported species, seven are eurybiontic, three are xerophilous, three are xero-thermophilous, two are thermophilous, two prefer sandy regions, one species is mesophilous, one is hygrophilous and one prefers forestry ecosystems. A rare species in the Romanian fauna was also reported (Rhopalus distinctus). The greatest diversity was noted in the meadow with bushes, and the equitability had the highest value in the oak grove. The maximum number of species was recorded in August and the minimum number in June. The majority of species (18) are polyphagous. Among the 20 species, 40% have a Palearctic spreading.  
         
     
         
         
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