Spiketails (Cordulegastridae)

Brown Spiketail (Cordulegaster bilineata)

11 records above Fall Line. Pale green eyes. Most similar to Twin-spotted, but smaller. Paired triangles on abdomen are all close to same size, on Twin-spotted they vary in size. Males on left, females on right, short ovipositor.

 

11 Mar- 8 Jul


Tiger Spiketail (Cordulegaster erronea)

Large insect, 70 mm. 11 records all in northern part of GA. Unbroken rings on abdomen, only Say's Spiketail of south GA has this pattern but smaller and well separated by range..

8 Jun- 4 Sep


Twin-spotted Spiketail (Cordulegaster maculata)

Widespread early in the year, by far the most common spiketail. Note abdomen markings are only on upper surface, appear as a series of paired triangles. Triangles variable in size between individuals and on same individual. Resembles Brown Spiketail but larger and Brown has all triangles same size. Male and female together for comparison at lower left, posed. Lower right is female ovipositing, up-and-down motion like a sewing machine. 

11 Mar- 27 Jun


Arrowhead Spiketail (Cordulegaster obliqua fasciata)

9 records spread across the state. Southern form found in most of GA is slightly larger with pale blue eyes (right), and northern form found in north GA is slightly smaller with green eyes (left).               

17 Apr- 17 Aug


Say's Spiketail (Cordulegaster sayi)

Found only in north FL and eastern GA, and only for a short time in Mar and Apr., 10 counties in GA. Note abdominal markings go all the way around to form rings, though they can be broken on top. Only much larger Tiger of north GA also has rings, well separated by range. Note magenta middle thoracic stripe, no other spiketail has this. Markings go from pale yellow, almost white when fresh to eventually bright yellow in older individuals.

8 Mar-22 Apr


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