Forum Entomologi Italiani

Unknown ant queen from Costa Rica; about 8 mm

This is a queen of the Camponotus festinatus complex. This complex was treated in 2006 by Snelling but there is still a lot of uncertainty. There are also many isolated specimens (collected in nearctic and neotropical regions) surely belonging to this complex but not yet classified so surely there is more work to do with these ants. So I think that it is impossible to do an exact determination with a simple photo.

If you want to read something about it I suggest you Snelling, R. R. 2006: Taxonomy of the Camponotus festinatus complex in the United States of America (Hymenoptera: Formicidae).

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Vade ad formicam...

Ciao Vincenzo, with this background of course its impossible to say anything more. Thank you for the detailed description, I will try to find the publication you mentioned.