Ascobulla ulla

Ascobulla ulla is a species of sea snail, a marine gastropod sacoglossan mollusk in the family Volvatellidae.^[1]

This marine species occurs off Brazil.

• Rosenberg, G.; Moretzsohn, F.; García, E. F. (2009). Gastropoda (Mollusca) of the Gulf of Mexico, Pp. 579–699 in: Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Texas A&M Press, College Station, Texas.
• Marcus, Ev. (1972). On some Opisthobranchs from Florida. Bulletin of Marine Science. 22 (2): 284–308.
• Jensen, R. H. (1997). A Checklist and Bibliography of the Marine Molluscs of Bermuda. Unp. , 547 pp
• Ortea J., Moro L. & Bacallado J.J. (2020). Revisión y estudio del material de Ascobulla sp. (Mollusca: Sacoglossa) colectado en Cabo Verde y en las islas Canarias, desde hace 35 años. Revista de la Academia Canaria de Ciencias. 32: 35–44.

• Marcus, Er.; Marcus, Ev. (1970). "Opisthobranchs from Curaçao and faunistically related regions" (PDF). Studies on the Fauna of Curaçao and other Caribbean Islands. 33 (1): 25–26. Retrieved 8 December 2025.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• Mikkelsen, P.M. (1998). "Cylindrobulla and Ascobulla in the western Atlantic (Gastropoda, Opisthobranchia, Sacoglossa): Systematic review, description of a new species, and phylogenetic reanalysis". Zoologica Scripta. 27 (1): 49–71. doi:10.1111/j.1463-6409.1998.tb00428.x.
• Jensen, K.R. (2007). "Biogeography of the Sacoglossa (Mollusca, Opisthobranchia)" (PDF). Bonner Zoologische Beiträge. 55: 255–281.