THE CRABS FROM MAYOTTE ISLAND (CRUSTACEA, DECAPODA, BRACHYURA) Joseph Poupin, Régis Cleva, Jean-Marie Bouchard, Vincent Dinhut, and Jacques Dumas Atoll Research Bulletin No. 617 1 May 2018 Washington, D.C. All statements made in papers published in the Atoll Research Bulletin are the sole responsibility of the authors and do not necessarily represent the views of the Smithsonian Institution or of the editors of the bulletin. Articles submitted for publication in the Atoll Research Bulletin should be original papers and must be made available by authors for open access publication. Manuscripts should be consistent with the “Author Formatting Guidelines for Publication in the Atoll Research Bulletin.” All submissions to the bulletin are peer reviewed and, after revision, are evaluated prior to acceptance and publication through the publisher’s open access portal, Open SI (http://opensi.si.edu). Published by SMITHSONIAN INSTITUTION SCHOLARLY PRESS P.O. Box 37012, MRC 957 Washington, D.C. 20013-7012 https://scholarlypress.si.edu/ The rights to all text and images in this publication are owned either by the contributing authors or by third parties. Fair use of materials is permitted for personal, educational, or noncommercial purposes. Users must cite author and source of content, must not alter or modify the content, and must comply with all other terms or restrictions that may be applicable. Users are responsible for securing permission from a rights holder for any other use. ISSN: 0077-5630 (online) This work is dedicated to our friend Alain Crosnier, great contributor for crab sampling in Mayotte region between 1958-1971 and author of several important taxonomic contributions in the region. Photograph February 2006 courtesy of J. -F Dejouannet (photographer unknown) during a coffee break in Paris Museum. CONTENTS ABSTRACT .................................................................................................................................................. 1 RÉSUMÉ ...................................................................................................................................................... 1 INTRODUCTION ........................................................................................................................................ 2 METHODS ................................................................................................................................................... 4 Abbreviations and acronyms ..................................................................................................................... 4 Sampling method and photographs ........................................................................................................... 4 Measurement of the crabs ......................................................................................................................... 6 Determinations .......................................................................................................................................... 6 Registration of the collection .................................................................................................................... 6 Geographic distribution and depth ranges ................................................................................................ 7 HISTORICAL LANDMARKS..................................................................................................................... 7 CRABS OF MAYOTTE KUW 2009 EXPEDITION ................................................................................... 9 Order Decapoda Latreille, 1802 ................................................................................................................ 9 Infra Order Brachyura Latreille, 1802 ...................................................................................................... 9 Superfamily Dromioidea De Haan, 1833 .................................................................................................. 9 Family Dromiidae De Haan, 1833 ........................................................................................................ 9 Family Dynomenidae Ortmann, 1892 ................................................................................................... 9 Superfamily Aethroidea Dana, 1851 ....................................................................................................... 10 Family Aethridae Dana, 1851 ............................................................................................................. 10 Superfamily Calappoidea De Haan, 1833 ............................................................................................... 10 Family Calappidae De Haan, 1833 ..................................................................................................... 10 Family Matutidae De Haan, 1835 ....................................................................................................... 12 Superfamily Carpilioidea Ortmann, 1893 ............................................................................................... 12 Family Carpiliidae Ortmann, 1893 ..................................................................................................... 12 Superfamily Eriphioidea MacLeay, 1838 ............................................................................................... 12 Family Eriphiidae MacLeay, 1838 ...................................................................................................... 12 Family Oziidae Dana, 1851 ................................................................................................................ 13 Superfamily Goneplacoidea MacLeay, 1838 .......................................................................................... 16 Family Acidopsidae Števčić, 2005 ...................................................................................................... 16 Superfamily Leucosioidea Samouelle, 1819 ........................................................................................... 16 Family Leucosiidae Samouelle, 1819 ................................................................................................. 16 Superfamily Majoidea Samouelle, 1819 ................................................................................................. 18 Family Epialtidae MacLeay, 1838 ...................................................................................................... 18 Family Inachidae MacLeay, 1838 ....................................................................................................... 22 Family Majidae Samouelle, 1819 ....................................................................................................... 23 Superfamily Parthenopoidea MacLeay, 1838 ......................................................................................... 24 Family Parthenopidae MacLeay, 1838 ............................................................................................... 24 Superfamily Pilumnoidea Samouelle, 1819 ............................................................................................ 26 Family Pilumnidae Samouelle, 1819 .................................................................................................. 26 Superfamily Portunoidea Rafinesque, 1815 ............................................................................................ 28 Family Portunidae Rafinesque, 1815 .................................................................................................. 28 Superfamily Pseudozioidea Alcock, 1898 .............................................................................................. 35 Family Planopilumnidae Serène, 1984 ............................................................................................... 35 Family Pseudoziidae Alcock, 1898 ..................................................................................................... 36 Superfamily Trapezioidea Miers, 1886 ................................................................................................... 36 Family Domeciidae Ortmann, 1893 .................................................................................................... 36 Family Tetraliidae Castro, Ng and Ahyong, 2004 .............................................................................. 37 Family Trapeziidae Miers, 1886 ......................................................................................................... 39 Superfamily Xanthoidea MacLeay, 1838 ............................................................................................... 42 Family Xanthidae MacLeay, 1838 ...................................................................................................... 42 Superfamily Grapsoidea MacLeay, 1838 ................................................................................................ 68 Family Gecarcinidae MacLeay, 1838 ................................................................................................. 68 Family Grapsidae MacLeay, 1838 ...................................................................................................... 68 Family Percnidae Števčić, 2005 .......................................................................................................... 70 Family Plagusiidae Dana, 1851 .......................................................................................................... 70 Family Sesarmidae Dana, 1851 .........................................................................................................