Hawaiian apple banana (Dwarf Brazilian ‘Santa
Catarina’ variety) fruits with the typical symptoms
of formic acid injury caused by ants. Also
shown along the upper edge of the center fruit
is a slight “corky scab” injury caused by the
feeding of flower thrips (Thrips hawaiiensis). The
thrips injury, although similar in color, is raised
and corky in texture, not smooth and sunken as
with formic acid injury.