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BG1515 D0466 comp - Cicindela sexguttata

BG1515 D0466 comp - Cicindela sexguttata
Decatur County, Georgia, USA
July 6, 2007
Size: body length 12.9 mm.
Be careful when describing the color of iridescent subjects. These are structual colors, and they change with viewing and lighting angles. Pigment based color is not affected by viewing and lighting angles, but rendition of digital photos containing pigment based color can be SERIOUSLY affected by white balance problems with digital cameras. But that is a different subject.

#1 was illuminated from near the camera position.
#2 was illuminated from above at a right angle to the camera position.
#3 was illuminated from beyond the subject. (backlit)

This is a common Tiger Beetle, probably Cicindela sexgutatta, posted to illustrate the tricky nature of iridesence.

Moved from Cicindela.

C. sexguttata
Yes, this is C. sexguttata. Thanks for pointing out the problems with interpreting color! (however, in general situation #3 is pretty extreme and not common with specimens photographed in most natural outdoors situations) These photos (esp. 1 and 2) illustrate that subtle differences in color (i.e. blue vs. green) shouldn't be overinterpreted.

Color is generally not a reliable character in tiger beetle identification anyway, except in the broad sense (sexgutata range from green to violet... you'll never see a red or brownish specimen). Besides the artifacts of photography, there is a lot color variation in real populations and that is at least partly due to non-genetic environmental effects of conditions during development. - Dan

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