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The genus    Eurygaster    Laporte, 1833 includes ten species five of which inhabit the European part of Russia. The harmful species of the genus is    E.   integriceps   .    Eurygaster    species identification based on the morphological traits is very difficult, while that of the species at the egg or larval stages is extremely difficult or impossible.    Eurygaster   integriceps   ,    E.   maura   , and    E.   testudinaria    differ only slightly between each other morphologically,    E.   maura    and    E.   testudinaria    being almost indiscernible. DNA barcoding based on  COI  sequences have shown that    E.   integriceps    differs significantly from these closely related species, which enables its rapid and accurate identification. Based on  COI  nucleotide sequences, three species of Sunn pests,    E.   maura   ,    E.   testudinarius   ,    E.   dilaticollis   , could not be differentiated from each other through DNA barcoding. The difference in the DNA sequences between the  COI  gene of    E.   integriceps    and  COI  genes of    E.   maura    and    E.   testudinarius    was more than 4%. In the present study DNA barcoding of two    Eurygaster    species was performed for the first time on    E.   integriceps   , the most dangerous pest in the genus, and    E.   dilaticollis    that only inhabits natural ecosystems. The PCR-RFLP method was developed in this work for the rapid identification of    E.   integriceps   .

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DNA barcoding and morphological analysis for rapid identification of most economically important crop-infesting Sunn pests belonging to    Eurygaster    Laporte, 1833 (  Hemiptera  ,   Scutelleridae  )