title: A new genus of speleophriid copepod (Copepoda: Misophrioida) from a cenote in the Yucatan, Mexico with a phylogenetic analysis at the species level.
abstract: A new genus and species of speleophriid copepod, Mexicophria cenoticola gen. et sp. nov., is described based on material collected from a cenote in the Yucatan Peninsula of Mexico. It is characterised by relatively reduced fifth legs that are located adjacent to the ventral midline in both sexes, by the possession of a bulbous swelling on the first antennulary segment in both sexes, and by the reduced setation of the swimming legs. The presence of just one inner margin seta on the second endopodal segment of legs 2 to 4 is a unique feature for the family. A phylogenetic analysis places the new genus on a basal lineage of the family together with its sister taxon, Boxshallia Huys, 1988, from Lanzarote in the Canary Islands, and recovers the existing genera as monophyletic units. The zoogeography is discussed at local, regional, ocean basin  and global scales.
authors.affiliation: Department of Life Sciences, The Natural History Museum, Cromwell Road, London SW7 5BD, UK; Email: g.boxshall@nhm.ac.uk.
authors.forename: Geoff A
authors.initials: GA
authors.lastname: Boxshall
authors.affiliation: School of Biology, University of Leeds, Leeds LS2 9JT, UK; Email: unknown.
authors.forename: Sarah
authors.initials: S
authors.lastname: Zylinski
authors.affiliation: Instituto Mediterráneo de Estudios Avanzados (CSIC-UIB), c/ Miquel Marquès, 21, 07190-Esporles (Illes Balears), Spain; Email: unknown.
authors.forename: Damià
authors.initials: D
authors.lastname: Jaume
authors.affiliation: Department of Marine Biology, Texas A & M University at Galveston, 200 Seawolf Pkwy, Galveston, TX 77553, USA; Email: unknown.
authors.forename: Thomas M
authors.initials: TM
authors.lastname: Iliffe
authors.affiliation: El Colegio de la Frontera Sur (ECOSUR), Unidad Chetumal, Av. Centenario Km 5,5, 770795 Chetumal, Quintana Roo, Mexico; Email: unknown.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Suárez-Morales
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D049628:Body Size; D033342:Copepoda / Q000033:anatomy & histology / Q000145:classification* / Q000235:genetics / Q000254:growth & development; D017753:Ecosystem; D005260:Female; D008297:Male; D008800:Mexico; D009929:Organ Size; D010802:Phylogeny; D013045:Species Specificity