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Good to have some "strong" criterias at least for the family, when I face so common metallic green flies ! Thanks for the explanations, Paul. B)

I have 2 questions left :

- Are Neomyia and Orthellia synonyms ? (That's what I understood for books, but I'm not sure :|)

- For Calliphoridae, is medial vein always curving ?

Best regards !