Acta Univ. Agric. Silvic. Mendelianae Brun. 2017, 65(3), 833-838 | DOI: 10.11118/actaun201765030833

Altitudinal Variability in Wing Patterns of Phyllonorycter salictella (Zeller, 1846) (Lepidoptera: Gracillariidae)

František Gregor1, Hana Šefrová2, Zdeněk Laštůvka3
1 Loosova 14, 638 00 Brno, Czech Republic
2 Department of Crop Science, Breeding and Plant Medicine, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic
3 Department of Zoology, Hydrobiology, Fisheries and Apiculture, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic

Individual variability of wing patterns is not frequent in European species of the genus Phyllonorycter Hübner, 1822. It is unusually distinct in Phyllonorycter salictella (Zeller, 1846) which causes some taxonomic ambiguities and oversights. We found on numerous material of adults reared from overwintering pupae collected in the Czech and Slovak Republics since 1950 that this variability is related with altitude (temperature). Adults with the distinct generotypic (plesiomorphic) wing patterns dominated in submountain populations while individuals with the strongly reduced (apomorphic) wing drawings were represented quite negligibly. This ratio was reversed in lowland populations. The observed variability is continuous between extreme variants, it is regionally and trophic unaffected, and more pronounced in males than in females. The results support the view that the questionable taxa such as Phyllonorycter viminiella (Sircom, 1848) and P. heringiella (Grønlien, 1932) represent only individual (local or regional) forms of the above species.

Keywords: altitude, Phyllonorycter, Salix, variability

Prepublished online: July 3, 2017; Published: May 1, 2017  Show citation

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Gregor, F., Šefrová, H., & Laštůvka, Z. (2017). Altitudinal Variability in Wing Patterns of Phyllonorycter salictella (Zeller, 1846) (Lepidoptera: Gracillariidae). Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 65(3), 833-838. doi: 10.11118/actaun201765030833
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