01232nas a2200145   4500008004100000245015200041210006900193300001000262490000900272520072700281100001401008700001301022700001701035856003401052       2008                        eng d00aRevision of the Alpheus websteri Kingsley, 1880 species complex (Crustacea : Decapoda : Alpheidae), with revalidation of A. arenensis (Chace, 1937)0 aRevision of the Alpheus websteri Kingsley 1880 species complex C  a51-680 v16943 aThe Alpheus websteri Kingsley, 1880 species complex is revised. Alpheus websteri s. str. is redefined and restricted to the western Atlantic, ranging from the type locality in the Florida Keys to northeastern Brazil. The eastern Pacific A. arenensis (Chace, 1937), formerly a synonym of A. websteri, and the eastern Atlantic A. fagei Crosnier and Forest, 1966, are shown to be distinct from A. websteri morphologically, genetically and also by color pattern. Morphology, genetics and color patterns all suggest that A. websteri and A. arenensis are transisthmian sister species, with A. fagei being their closest relative. Complete synonymy, color photographs and GenBank barcodes (COI) are provided for all three species.1 aAnker, A.1 aHurt, C.1 aKnowlton, N.  u<Go to ISI>://000252777000003