Polymorphism of Philaenus spumarius L. (Hemiptera: Cercopidae) in the Samsun (Mid-Black Sea Region) populations of Turkey

Abstract Variation in the frequency of colour/pattern phenotypes of Philaenus spumarius (L.) is studied in the three local populations of Samsun (Mid-Black Sea Region), Turkey. The data, obtained from the 91 samples including 10,427 adult spittlebugs, 5,340 females and 5,087 males were analysed according to phenotype distributions in the study sites. The adult spittlebugs were collected during eleven months except with April. The mean sample size was 114.6±19.9 (Mean±S.E.) for 91 samplings. Eight different phenotypes of P spumarius were detected in the Samsun populations. Of these, four were non-melanic and four were melanic phenotypes with the lack of the “O” group. In females, non-melanic frequency was over 95%, which TYP (typicus) was the predominant phenotype, but POP (populi) in males. However the phenotype frequency distributions were not different between the sites studied. Although, frequency of females reached up to 85% in some samples, the overall sex ratio did not differ from the 1:1.

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