ATOLL RESEARCH BULLETIN NO. 500 CRUSTACEA DECAPODA AND STOMATOPODA OF EASTER ISLAND AND SURROUNDING AREAS. A DOCUMENTED CHECKLIST WITH HISTORICAL OVERVIEW AND BIOGEOGRAPHIC COMMENTS JOSEPH POUPIN ISSUED BY NATIONAL MUSEUM OF NATURAL HISTORY SMITHSONIAN INSTITUTION WASHINGTON, D.C., U.S.A. AUGUST 2003 CONTENT ABSTRACT ........................................................................................................................... 1 INTRODUCTION .................................................................................................................. 2 METHODS ............................................................................................................................. 2 HISTORICAL OVERVIEW .................................................................................................. 3 RESULTS ............................................................................................................................... 7 . Statistics on Taxa ............................................................................................................. 7 Ecology ............................................................................................................................... 7 Biogeographic study ......................................................................................................... 10 CONCLUSION .................................................................................................................... 14 ACKNOWLEDGMENTS .................................................................................................... 15 LIST OF THE SPECIES ...................................................................................................... 17 Class Malacostraca .......................................................................................................... 17 Subclass Hoplocarida ...................................................................................................... 17 Order Stomatopoda ......................................................................................................... 17 Family Odontodactylidae ........................................................................................ 17 Family Pseudosquillidae .......................................................................................... 17 Subclass Eumalacostraca ................................................................................................. 17 Order Decapoda ............................................................................................................... 17 Suborder Dendrobranchiata .............................................................................................. 17 Family Aristaeidae .................................................................................................. 17 Family Benthesicymidae ......................................................................................... 18 Family Penaeidae .................................................................................................... 18 . Family Sicyoniidae .................................................................................................. 18 Family Solenoceridae .............................................................................................. 18 Family Sergestidae ................................................................................................. 18 Suborder Pleocyemata ..................................................................................................... 19 Infraorder Stenopodidea ............................................................................................... 19 Family Spongicolidae ........................................................................................... 19 Family Stenopodidae ............................................................................................... 19 Infraorder Caridea ........................................................................................................ 19 Family Pasiphaeidae ................................................................................................ 19 Family Oplophoridae ............................................................................................... 20 Family Disciadidae .................................................................................................. 20 . Family Nematocarcinidae ........................................................................................ 20 Family Rhynchocinetidae ..................................................................................... 21 Family Stylodactylidae ............................................................................................ 21 Family Gnathophyllidae ......................................................................................... 21 Family Palaemonidae ..............................................................................................21 Family Alpheidae ....................................................................................................21 Family Hippo1ytidae ................................................................................................22 Family Processidae ..................................................................................................22 Family Pandalidae ...................................................................................................22 Family Crangonidae ................................................................................................23 Family Glyphocrangonidae .....................................................................................23 Infraorder Thalassinidea ...............................................................................................23 Family Callianassidae ..............................................................................................23 Infraorder Palinura .......................................................................................................24 Family Polychelidae ................................................................................................24 Family Palinuridae ..................................................................................................24 Family Scyllaridae ...................................................................................................24 Infraorder Anomura .....................................................................................................24 Family Galatheidae ..................................................................................................24 Family Porcellanidae ...............................................................................................25 Family Albuneidae ..................................................................................................25 Family Diogenidae ............................................................................................... 25 Family Paguridae ..................................................................................................... 25 Family Parapaguridae ........................................................................................... 26 Infraorder Brachyura ....................................................................................................27 . Family Drormidae ....................................................................................................27 Family Dynomenidae ..............................................................................................27 Family Homolidae .............................................................................................27 . Family Latreilliidae ............................................................................................... 27 Family Calappidae ...................................................................................................28 Family Leucosiidae .................................................................................................28 .. Family Majidae ........................................................................................................28 Family Hymenosomatidae .................................................................................... 28 Family Parthenopidae .........................................................................................28 Family Atelicyclidae ............................................................................................... 29 Family Geryonidae .................................................................................................. 29 Family Portunidae ...................................................................................................29 .. Family Carpiliidae .............................................................................................. 29 Family Goneplacidae ............................................................................................. 29 .. Family Trapeziidae .................................................................................................. 29 Family Xanthidae .................................................................................................... 30 Family Cryptochiridae .............................................................................................30 Family Pinnotheridae ..............................................................................................30 Family Grapsidae .................................................................................................30