Little is known about the natural enemies of blastobasis. No parasitic wasps have been reared from samples of larvae collected in the field.
- It is probable that a wide range of generalist insect predators such as anthocorids, mirids, lacewing larvae, earwigs etc. feeds on eggs and young larvae.
- Numerous earwigs are often present in the vicinity of semi-mature caterpillars feeding in shelters amongst fruits and leaves.
- The shelters appear to provide good protection against them but, sometimes, vacant shelters occupied by earwigs are found giving the impression that earwigs might be important predators of blastobasis.