I would say that although Kimsey 1985 and Kimsey & Bohart 1991 synonymised gracilia Linsenmaier 1985 with alfkeni (Ducke 1902) it does not agree with the description of alfkeni in Linsenmaier 1997 (the only description of alfkeni I have seen), while to me seems similar to his gracilia.
Is there any consensus on what genera/species this taxon belongs to? (if I'm correct in my ID that is)
First label:
Honduras: Yoro, Palo de
Comba. 15¤11´N, 87¤39´W
27.IX.1995
leg. R. Cave
Second label:
Malaise trap in mid elevation
secondary forest
You'll have to excuse the bad quality of the pictures, this wasp is tiny, and so my 1:1 macro is far from adequate (time to buy a componon 50/f.2.8 and turn it around

Thanks,
/Alex