A New Species of Neotropical Carpenter Ant in the GenusCamponotus(Hymenoptera: Formicidae), Apparently without Major Workers

We describe a new species of carpenter ants from Ecuador, which apparently has an obligatory relationship with the ant plantsCecropia membranaceaTrécul,C. herthaeDiels andC. marginalisCuatrec. The workers are relatively small and hairy, and based on a number of collections, it does not appear to have major workers. We compare the new species toCamponotus balzani, to which it appears to be similar and which has normal major workers, and also lives inCecropiaspp.