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LS,

Another topic that doesn't really fit into any of the forum categories...
but sth i'd like to share with you, and maybe some of you know more about this phenomenon.

About a week ago i found a Chloromyia formosa - Stratiomyidae, cf pictures in one of the identification requests - female that had an additional front tarsus. I.e. a small tarsus developed next to the normal one, so the leg is ramified below the tibia.

I suppose this is due to some disorder in embryonic development, comparable with an extra finger in vertebrates. Though i don't really think it is a likely explanation, i had to think of an atavism, as crustaceans typically have ramified appendages.

Does anyone know more about it?

Louis