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Vita Malacologica 10: 1-108 6 April 2013 Pectinoidea (Bivalvia: Propeamussiidae and Pectinidae) from the Panglao region, Philippine Islands Henk H. DIJKSTRA Naturalis Biodiversity Center, Department of Marine Zoology, P.O. Box 9517, 2300 RA Leiden, The Netherlands e-mail: [email protected] Key words: Bivalvia, Pectinoidea, Propeamussiidae, Pectinidae, Panglao, Philippines, Recent, taxonomy, nomenclature, new species, distribution ABSTRACT Genus Similipecten ............................................................ 22 Similipecten eous .............................................................. 22 Sixty one Pectinoidea species (11 Propeamussiidae and 50 Pectinidae) collected by the 2004 Panglao Marine Biodiv- ersity Project (PMBP) to Panglao, Philippines, and the Family Pectinidae ............................................................ 24 PANGLAO 2005 Deep-Sea Cruise are described. One Prope- Subfamily Camptonectinae ............................................... 24 amussiidae species is new to science: Parvamussium largoi Genus Delectopecten ........................................................ 24 spec. nov. Three pectinoidean species (1 Propeamus-siidae, 2 Delectopecten alcocki ....................................................... 24 Pectinidae) are new records for the Philippines: Similipecten Delectopecten musorstomi ................................................ 25 eous (Melvill in Melvill & Standen, 1907), "Mimachlamys" kauaiensis (Dall, Bartsch & Rehder, 1938) and Haumea Subfamily Palliolinae ........................................................ 26 rehderi (Grau, 1960). Records of species in the ZMA collec- Tribe Palliolini .................................................................. 26 tion (now Naturalis Biodiversity Center) from the Philippines, Genus Palliolum ................................................................ 26 not sampled by PMBP 2004 and PANGLAO 2005, are given. Palliolum minutulum ......................................................... 26 Amussium electrum Pelseneer, 1911 is newly synonymised with Propeamussium caducum (E.A. Smith, 1885). Type data, Subfamily Pectininae ........................................................ 27 references, descriptions, horizontal and vertical distribution Tribe Decatopectinini ........................................................ 27 and habitat of each species are provided. Genus Decatopecten ......................................................... 27 Decatopecten plica ............................................................ 27 Decatopecten radula radula ............................................. 30 CONTENTS Genus Anguipecten ........................................................... 33 Introduction ......................................................................... 2 Anguipecten picturatus ..................................................... 33 Materials and methods ........................................................ 3 Anguipecten superbus ....................................................... 34 Abbreviations ...................................................................... 3 Results ................................................................................. 5 Genus Bractechlamys ........................................................ 34 Systematic part .................................................................... 5 Bractechlamys oweni ........................................................ 35 Family Propeamussiidae .................................................. 5 Genus Excellichlamys ....................................................... 35 Genus Propeamussium ........................................................ 7 Excellichlamys spectabilis ................................................ 38 Propeamussium caducum ................................................. 10 Propeamussium jeffreysii .................................................. 13 Genus Glorichlamys .......................................................... 39 Propeamussium rubrotinctum ........................................... 13 Glorichlamys elegantissima .............................................. 39 Propeamussium sibogai .................................................... 14 Glorichlamys quadrilirata ................................................ 40 Propeamussium siratama .................................................. 15 Genus Gloripallium .......................................................... 42 Genus Parvamussium ........................................................ 17 Gloripallium pallium ........................................................ 42 Parvamussium araneum .................................................... 17 Gloripallium speciosum .................................................... 43 Parvamussium cristatellum .............................................. 18 Parvamussium largoi spec. nov. ...................................... 19 Genus Juxtamusium .......................................................... 44 Parvamussium pauciliratum ............................................. 19 Juxtamusium coudeini ....................................................... 44 Parvamussium scitulum .................................................... 21 Juxtamusium maldivense .................................................. 46 VITA MALACOLOGICA, 10: 1 Dijkstra, H.H. - The Pectinoidea from Panglao Genus Mirapecten ............................................................. 46 Tribe Mimachlamydini ..................................................... 88 Mirapecten mirificus ......................................................... 47 Genus Mimachlamys ......................................................... 88 Mirapecten moluccensis .................................................... 47 Mimachlamys albolineata ................................................. 88 Mirapecten rastellum ........................................................ 49 Mimachlamys cloacata ..................................................... 89 Mimachlamys gloriosa ...................................................... 92 "Mimachlamys" kauaiensis ............................................... 93 Tribe Amusiini .................................................................. 50 Mimachlamys lentiginosa ................................................. 93 Genus Amusium ................................................................ 50 Mimachlamys sanguinea ................................................... 96 Amusium pleuronectes ...................................................... 50 Tribe Aequipectinini ......................................................... 98 Genus Dentamussium ........................................................ 54 Genus Cryptopecten .......................................................... 98 Dentamussium obliteratum ............................................... 54 Cryptopecten bullatus ....................................................... 98 Cryptopecten nux .............................................................. 99 Tribe Pectinini ................................................................... 54 Genus Serratovola ............................................................ 54 Genus Haumea ................................................................ 100 Serratovola rubicunda ...................................................... 55 Haumea rehderi .............................................................. 100 Subfamily Chlamydinae .................................................... 57 Discussion ....................................................................... 101 Tribe Chlamydini .............................................................. 57 Acknowledgements ......................................................... 101 Genus Complicachlamys ................................................... 57 References ....................................................................... 101 Complicachlamys wardiana .............................................. 57 Genus Coralichlamys ........................................................ 58 INTRODUCTION Coralichlamys madreporarum .......................................... 58 In the first decades of the nineteenth century only a very Genus Hemipecten ............................................................ 60 few scallop species were known from the Philippine Archipe- Hemipecten forbesianus .................................................... 61 lago. During a voyage to the Philippines in 1836-1840 H. Cuming collected several unknown pectinids, which were Genus Laevichlamys ......................................................... 61 described by G.B. Sowerby 2nd in 1842 and by L.A. Reeve Laevichlamys aliae ............................................................ 64 during the years 1852 and 1853. The first expedition after Cu- Laevichlamys cuneata ....................................................... 64 ming's voyage was H.M.S. "Samarang" (1843-1846), treated Laevichlamys deliciosa ..................................................... 65 by Adams & Reeve in 1849 and 1850 (Trew, 1992). Only a Laevichlamys gladysiae .................................................... 66 few pectinids were discovered as new for science, viz. Hemi- Laevichlamys mollita ........................................................ 68 pecten forbesianus Adams & Reeve, 1849 (Petit, 2007: 99) Laevichlamys multisqualida .............................................. 68 and Pecten fulvicostatus Adams & Reeve,