Hespererato vitellina

Appleseed Erato

Family: Eratoidae · Class: Gastropoda · Order: Littorinimorpha

The appleseed erato (Hespererato vitellina) is a marine gastropod mollusk in the family Eratoidae. This sea snail represents one of three species within the genus Hespererato recognized by the U.S. Fish and Wildlife Service taxonomic database (USFWS Taxonomic Tree). The species belongs to the class Gastropoda, order Littorinimorpha, within the broader taxonomic framework of protostome mollusks. Specific morphological characteristics of H. vitellina have not been well documented in accessible scientific literature. As a member of the family Eratoidae, commonly known as coffee bean shells or trivias, this species likely exhibits the characteristic small, oval shell shape typical of the family, though detailed measurements and distinguishing features require further documentation. The geographic distribution of the appleseed erato appears to be associated with California's marine protected areas, as the species has been documented within the Montara State Marine Reserve and Pillar Point State Marine Conservation Area along the San Mateo County coastline (California Department of Fish and Wildlife). These adjacent marine protected areas encompass nearly 12 square miles of marine habitat in Montara SMR and over 6.5 square miles in Pillar Point SMCA, extending to depths exceeding 160-170 feet. The protected areas feature diverse habitats including sandy beaches, rocky intertidal zones, and offshore waters. Habitat requirements for H. vitellina have not been specifically characterized in available literature. Given its presence within California's marine protected areas and its classification as a sea snail, the species likely inhabits rocky intertidal or subtidal zones typical of many Eratoidae family members. The Montara and Pillar Point marine protected areas provide habitat ranging from intertidal zones to depths greater than 170 feet, suggesting potential depth tolerance within this range. Ecological information including feeding behavior, reproductive patterns, and life history characteristics remains undocumented for this species. Many trivias are known to be specialized predators of colonial invertebrates, but specific dietary preferences and behavioral patterns of the appleseed erato require scientific investigation. The conservation status of Hespererato vitellina is not established through standard listing processes, as the species shows no federal or state listing designations as of December 2025. The species' presence within California's marine protected areas may provide some habitat protection, though specific population trends and conservation needs have not been assessed. The limited scientific documentation available for this species represents a significant knowledge gap in understanding California's marine gastropod diversity. Detailed ecological studies of this species are lacking. The above information synthesizes available data from USFWS taxonomic records and California marine protected area documentation. We welcome contributions of verified scientific data, photographs, or field observations to enhance this species account.

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, and more.