Costoanachis sparsa is a species of sea snail, a marine gastropod mollusc in the family Columbellidae, the dove snails.

Distribution This marine species occurs off French Guiana.

References

Pelorce J., 2017. Les Columbellidae (Gastropoda: Neogastropoda) de la Guyane française. Xenophora Taxonomy 14: 4-21