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Cordulegaster obliqua (Arrowhead Spiketail) Total length = 78mmfemaleThe rare, large, dark Arrowhead Spiketail has pale green eyes and perfectly formed arrowhead markings down its abdomen.It lives around small forest streams with muddy bottoms. It appears from late May through July.
Collection of the Illinois State MuseumPhotographed by Dr. Everett Cashatt
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