About Phestilla lugubris (Bergh, 1870)
Phestilla lugubris (Bergh, 1870) is a species of sea slug. It is classified as an aeolid nudibranch, a type of marine gastropod mollusk that belongs to the family Trinchesiidae. This species was first described from specimens collected in the Philippines. It has a wide distribution across the tropical Indo-Pacific region. The primary prey of Phestilla lugubris is coral from the genus Porites.