Identification of Lepidoptera (Butterflies and Moths)

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11.11.2017 1:21, vidjl

Alexander, why is there such a big difference even in the Moscow region Xanthia icteritia, is it some kind of shape or? I just don't know.

No, these are not forms or subspecies, they are just such a Eurasian polyzonal species, they have a great variability, color variability, from a rather extensive brownish pattern, which sometimes reduces to just one single point in the center of the wing. I have an almost completely brown butterfly in my collection, and they also differ in size, sometimes with a difference of almost a centimeter. It is difficult to name the factors influencing this, as far as I know, they are the same throughout their entire habitat. But the timing of summer has changed slightly, especially in Siberia, almost until the end of October. If this is normal for the Southern regions, then it is new for Siberia.

This post was edited by vidjl - 11.11.2017 02: 21

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11.11.2017 11:27, Andrey Bezborodkin

No, these are not forms or subspecies, they are just such a Eurasian polyzonal species, they have a great variability, color variability, from a rather extensive brownish pattern, which sometimes reduces to just one single point in the center of the wing. I have an almost completely brown butterfly in my collection, and they also differ in size, sometimes with a difference of almost a centimeter. It is difficult to name the factors influencing this, as far as I know, they are the same throughout their entire habitat. But the timing of summer has changed slightly, especially in Siberia, almost until the end of October. If this is normal for the Southern regions, then it is new for Siberia.

The term "shape", as you know, is not considered by the ICZN and does not always have a description and stable features, but you are right, in this case, "color variability" more accurately reflects the essence of this type. And her years are stretched out in the Leningrad region, but it doesn't set in October - it's cold.

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