title: Phylogenetics reveals the crustacean order Amphionidacea to be larval shrimps (Decapoda: Caridea).
abstract: We present evidence that the single representative of the crustacean order Amphionidacea is a decapod shrimp and not a distinct order. After reviewing available morphological evidence, it is concluded that Amphionides is a larval form, but with an as yet unknown parentage. Although the most likely adult form is in the family Pandalidae, the limited molecular data available cannot fully resolve its affinity. We therefore propose to treat Amphionides reynaudii as incertae sedis within Caridea, rather than a separate family. In view of the large scale, tropical and subtropical distribution of the taxon, the possibility is discussed that Amphionides is more likely to be a composite taxon at generic level, rather than larvae of a single shrimp species.
authors.affiliation: Oxford University Museum of Natural History, Oxford, United Kingdom.
authors.forename: Sammy
authors.initials: S
authors.lastname: De Grave
authors.affiliation: Institute of Marine Biology, National Taiwan Ocean University, Keelung 20224, Taiwan.|Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 20224, Taiwan.
authors.forename: Tin-Yam
authors.initials: TY
authors.lastname: Chan
authors.affiliation: Simon F.S. Li Marine Science Laboratory, School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, China.|Shenzhen Research Institute, The Chinese University Hong Kong, Shenzhen, China.
authors.forename: Ka Hou
authors.initials: KH
authors.lastname: Chu
authors.affiliation: Institute of Marine Biology, National Taiwan Ocean University, Keelung 20224, Taiwan.
authors.forename: Chien-Hui
authors.initials: CH
authors.lastname: Yang
authors.affiliation: Graduate School of Fisheries Sciences, Hokkaido University, 3-1 Minato, Hakodate, Hokkaido 041-8611, Japan.
authors.forename: José M
authors.initials: JM
authors.lastname: Landeira
mesh_terms: D000818:Animals; D003445:Crustacea / Q000145:classification* / Q000235:genetics*; D058893:DNA Barcoding, Taxonomic; D033364:Decapoda / Q000145:classification* / Q000235:genetics*; D005819:Genetic Markers; D007814:Larva; D010802:Phylogeny
chemical_list: D005819:Genetic Markers