Costasiellidae is a taxonomic family of small to minute sacoglossan sea slugs. These are marine opisthobranch gastropod mollusks belonging to the superfamily Plakobranchoidea.
Genera
The following genera belong to the family Costasiellidae: • Costasiella Pruvot-Fol, 1951 • Panderevela Moro & Ortea, 2015 ==References==