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Fall Fund Drive

Calotarsa - Calotarsa insignis - male

Calotarsa - Calotarsa insignis - Male
Near Sacramento, California, USA

Images of this individual: tag all
Calotarsa - Calotarsa insignis - male Calotarsa - Calotarsa insignis - male

What are we looking at?
Is this a hind tibia/tarsus?

it is the hind tarsus which has the modification, the tibia is only slightly thicker (that is the long part on the bottom of the picture). There is a nice paper about these ornaments in flies which you can download from

Life is more complicated and more beautiful than we could ever even imagine!

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