Larva

Larvae are black, caterpillar-like enemies which appear in Final Fantasy IV and its sequels.

Final Fantasy IV
In Final Fantasy IV, Larvae are only encountered in Mist Cave. As basic enemies, Larvae can be quickly defeated from a few physical attacks. In early releases, Larvae do not have any unique abilities. In the 3D remake, they can use Slow as an attack, and are vulnerable to Ice attacks. In the PlayStation Portable version, if a character tries to perform magic on Larva, it counters with Osmose.

In Final Fantasy IV Advance, they are named Insectus, which is a transliteration of their Japanese name. In the 3D remake and subsequent reissues, their name was reverted back to Larva.