Identification key to male chaser dragonflies

Four-spotted Chaser (Libellula quadrimaculata) Broad-bodied Chaser (Libellula depressa) Scarce Chaser (Libellula fulva)
abdomen dark brown, tapering with lateral yellow spots; wings with broad brown patch at base and smaller brown patch on middle of leading edge abdomen pale blue, markedly broad and flattened with lateral yellow spots; wings with broad brown patch at base; conspicuous antehumeral stripes abdomen powder-blue with last 3 segments black, wings with broad brown patch at base, no brown patch on middle of leading edge

Nelson, B., Thompson, R. & Morrow, C., 2000 (June 29). [In] DragonflyIreland http://www.ulstermuseum.org.uk/dragonflyireland/

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