close to Crocinosoma ??? (pe-taxon #13)
This taxon seems very prolific and quite consistent in its morphology too, though I am not assuming that it represents a single species. This taxon resembles some individuals of fg-taxon #22 but has a much longer proboscis.
EDIT (04/10/2010): This keys to Crocinosoma and it looks similar to a named specimen but antenna-3 is the wrong shape and the proboscis is longer that the figured Costa Rican species. This might be within normal inter-generic variation but more work needs to be done.