The
row of setae on the upper surface of the
forewing that is directed posterobasally
from the
parastigma and that forms the
apex of the
basal cell (see
basal fold).
written by: Gibson , G. A. P., J. D. Read , and R. Fairchild. 1998. Chalcid wasps (Chalcidoidea): illustrated glossary of positional and morphological terms ..