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Calopteryx splendens · blizgančioji gražutė

  • banded demoiselle
  • Gebänderte Prachtlibelle
  • blizgančioji gražutė
  • upju zilspāre
  • świtezianka błyszcząca, świtezianka lśniąca

It is a Eurasian species occurring from the Atlantic coast eastwards to Lake Baikal and northwestern China. This is a common species throughout much of its range. It is often found along slow-flowing streams and rivers. This is a large damselfly with a total length of up to 48 mm and a hindwing length of up to 36 mm. Male and female are variable in color and pattern. The male has translucent wings which each have a broad, dark iridescent blue-black spot (or band) across the outer part. On immature individuals the spot is dark brown. The body can be a metallic blue or bluish green or a combination of both colours, depending on the time of year and location. The dark wing patch of the male starts at the nodus (the slight dip midway down the upper edge of the wing) but can reach up to the wing-tip in southern races. In the very similar beautiful demoiselle (Calopteryx virgo), the dark patch starts before the nodus. The female has translucent, pale green iridescent wings with a white patch near the tip (a pseudopterostigma), and a metallic green or bronze/green body.

Pilvelis 34-38 mm ilgio. Patinų sparnų vidurys su mėlyna juosta. Skraido upių ir upelių pakrantėmis. Lietuvoje dažna.