Viervlek (Libellula quadrimaculata) foto
Libellula quadrimaculata © Biopix: N Sloth
Lokatie
Hadsund Syd
Zoom in op de originele foto door rechts te klikken. Zet het in Lightbox, zie familie, etc. door links te klikken.
Gratis gebruik door scholen, enz., Betaald gebruik 30-60 EUR / foto
Larvae: No median ridge in middle of mask seen from below. Front margin on labial palp with shallow serrations. Eyes point outwards with tips below level of top of head when viewed from in front. Dorsal spine on 8 abdominal segment but not on 9. Cerci a little more than half length of paraproct. Often yellow fleck on side of labial mask.
18,0 mm-28,0 mm
Danish Redlist Status: LC (Least Concern)
Libellula quadrimaculata Linnaeus, 1758