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Data on 167 species of Heteroptera collected in the Biebrza River Valley (the best-preserved area of marshes and swamps in Central Europe) are presented. Out of them 25 are for the first time recorded from the Podlasie region. The most interesting species are: Nemocoris falleni SAHLB. (the second record from Poland), Pionosomus varius (WOLFF), Tingis pilosa HUMM., Nabicula lineata (DAHLB.), Stenodema...
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