Copyright: Per Hoffmann Olsen

Cordulegaster bidentata (Selys, 1843)

Cordulegaster bidentata

Flight-period Central Europe: from June to August

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Imago

Conservation Status in Austria: Vulnerable (VU)

  NE DD LC NT VU EN CR RE EX
Austria
Europe

English:Sombre Goldenring
German:Gestreifte Quelljungfer
Danish:
Date:19/06/2003
Location:Austria, Niederösterreich, Ober-Danegg
 
Copyright:Per Hoffmann Olsen
Camera:LS-50
Lens:Sigma 180mm 1:3.5 Macro with 25mm Extension Tube
 

Identification Help

The root triangle on the backwings only have 3 cells instead of 5, which in theory could make it C. bidentata instead of C. boltonii. 

Cordulegaster_bidentata_G_0603C.jpg

A more secure way to identify it is looking at the triangle behind the eyes. If the color is black it is C. bidentata.

More information here: http://www.natur-in-nrw.de/HTML/Tiere/Insekten/Libellen/TL-25.html (in German)

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