Ilanga fulgens is a species of sea snail, a marine gastropod mollusk in the family Solariellidae.

The interstices are filled by the yellowish-brown lines, which are often confluent, leaving only small whitish spots.

The basal surface is lighter, with scarce markings, of which a band of blotches, bordering the umbilicus, is the most conspicuous.

The lirae become less distinct, being broader and flatter on the next whorl, and are transferred in distant striae with smooth interstices.

[2] This marine species occurs in the East China Sea, off Japan, the Philippines and Australia.