Identification key to male club-tailed and golden-ringed dragonflies

Gomphus vulgatissimus Cordulegaster boltonii
Club-tailed Dragonfly (Gomphus vulgatissimus)
Medium sized dragonfly, abdomen swollen at tip, immature males are black and yellow, in mature males yellow changes to green, eyes separate, bright yellow spots on sides of segments 7-9
Golden-ringed Dragonfly (Cordulegaster boltonii)
Large dragonfly, abdomen only slightly swollen at tip, body black with yellow bands, eyes meet in a point

Nelson, B., Thompson, R. & Morrow, C., 2000 (June 29). [In] DragonflyIreland

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