title: Review of Baeolidia, the largest genus of Aeolidiidae (Mollusca: Nudibranchia), with the description of five new species.
abstract: This paper discusses the systematics of the aeolid genus Baeolidia Bergh, 1888. To date, this monophyletic genus is the most diverse within Aeolidiidae with sixteen valid species. Excluding Baeolidia cryoporos Bouchet, 1977, the genus is restricted to the Indo-Pacific and Eastern Pacific. Species of Baeolidia show a huge intrageneric variability in several morphological characters. Only oral glands, if present, may distinguish Baeolidia from other aeolidiids genera. Aeolidiella occidentalis Bergh, 1875, Aeolidiella faustina Bergh, 1900 and Spurilla orientalis Bergh, 1905 are transferred to Baeolidia but they are considered nomina dubia. Five new species, Baeolidia rieae sp. nov., Baeolidia variabilis sp. nov., Baeolidia lunaris sp. nov., Baeolidia gracilis sp. nov. and Baeolidia scottjohnsoni sp. nov. are described.
authors.affiliation: Departamento de Biología, Facultad de Ciencias del Mar y Ambientales, Campus de Excelencia Internacional del Mar (CEI·MAR,) Universidad de Cádiz. Polígono Río San Pedro, s/n, Ap.40. 11510 Puerto Real (Cádiz), SPAIN.; Email: unknown.
authors.forename: Leila
authors.initials: L
authors.lastname: Carmona
authors.affiliation: Laboratorio de Biología Marina, Departamento de Biología, Edificio de Biología, Campus de Excelencia Internacional UAM+CSIC, Universidad Autónoma de Madrid, C/ Darwin, 2, 28049 Madrid, SPAIN.; Email: unknown.
authors.forename: Marta
authors.initials: M
authors.lastname: Pola
authors.affiliation: Department of Invertebrate Zoology, California Academy of Sciences, 55 Music Concourse Drive, Golden Gate Park, San Francisco, CA 94118, USA.; Email: unknown.
authors.forename: Terrence M
authors.initials: TM
authors.lastname: Gosliner
authors.affiliation: Departamento de Biología, Facultad de Ciencias del Mar y Ambientales, Campus de Excelencia Internacional del Mar (CEI·MAR,) Universidad de Cádiz. Polígono Río San Pedro, s/n, Ap.40. 11510 Puerto Real (Cádiz), SPAIN.; Email: unknown.
authors.forename: Juan Lucas
authors.initials: JL
authors.lastname: Cervera
mesh_terms: D000818:Animals; D001267:Atlantic Ocean; D049851:Gastropoda / Q000033:anatomy & histology* / Q000145:classification* / Q000648:ultrastructure; D057850:Hermaphroditic Organisms / Q000145:classification; D019156:Indian Ocean; D008855:Microscopy, Electron, Scanning; D010140:Pacific Ocean; D010802:Phylogeny