New records of Coenagrion ornatum in the Czech Republic (Odonata: Coenagrionidae)

The distribution of Coenagrion ornatum in the Czech Republic is far more extensive than considered up to 2009. Before 2009 only one recent population from the Pileticky brook watershed and five historical records from Bohemia and Moravia were known. In 2009 twenty-five new localities with Coenagrion ornatum were discovered. These localities are distributed in northern, central and eastern Bohemia. The new Coenagrion ornatum localities are situated mostly in open farmland or mining areas at altitudes below 280 m a.s.l. Coenagrion ornatum prefers sunny parts of brooks and amelioration ditches with lush littoral vegetation [e.g. Sparganium erectum, Veronica beccabunga, Potamogeton spp., Berula erecta). However, it also occurs along degraded and regulated sections of the streams where the vegetation is dominated by Phalaris arundinacea and Urtica dioica.