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A study upon the total abundance of two whitefaces, Leucorrhinia caudalis and Leucorrhinia pectoralis was performed at the beginning of June 2008 in the nature reser- ve “Zdręczno Lake”, Tuchola Forest. The abundance estimation was based upon the number of exuviae collected within the re- serve, among the reed and shore vegetation, also in some distance from the shore. Alto- gether 76 samples were...
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