Littoral caprellids (Crustacea: Amphipoda: caprellidea) from Philippines, with the description of a new species

THE RAFFLES BULLETIN OF ZOOLOGY 2002 50(2): 395-406 @ Na ional Uni e si y o Singapo e LITTORAL CAPRELLmS (CRUSTACEA: AMP iPODA: CAPRELLmEA) FROM PHILIPPINES, WITH THE DESCRIPTION OF A NEW SPECIES Jose M. Gue a-Ga cia Labo a o io de Biolog a Ma ina. Depa amen o de Fisiolog a y Zoolog a. Facul ad de Biolog a. Uni e sidad de Se illa, A da Reina Me cedes 6, 41012 Se illa, Spain. E-mail: [email p o ec ed] ABSTRACT. -Collec ions o li o al cap ellids om Ma induque and Pamilacan Islands. Philippines, ha e been s udied. The ma e ial con ained h ee species: Me ap o o no aehollandiae (Haswell, 1880), P o oge on in la us Maye , 1903 and Deu ella philippinensis new species, which is desc ibed in he p esen pape . Deu ella philippinensis new species is close o D. ma ga i ae Gue a-Ga cia, 2002 and Deu ella maye i S ebbing, 1895, bu cons an di e ences in he mou hpa s, gna hopods, pe eopods 3 and 4 and male abdomen e ealed ha he specimens om Philippines belong o a new species. This is he i s eco d o he genus Deu ella o he Wes e n Paci ic. KEY WORDS. -Cap ellidea, Philippines, axonomy, Deu ella philippinensis, new species. INTRODUCTION Du ing a s ay a he Aus alian Museum, he au ho s udied some collec ions o shallow wa e cap ellids om Cap ellid amphipods a e small pe aca id c us aceans Ma induque Island, Panglao Island and Pamilacan Island, dis ibu ed along he wo ld coas s. They usually li e as Phillipines. Al hough he numbe o collec ed samples was epibion s on a a ie y o subs a es om he li o al zone o conside ably limi ed a new species o Deu ella was ound a dep h o 4790 m and many a e commensal wi h o he b. h .d' h D ii . h ' ..emg e l s eco 0 e genus eu e a m e coas s 0 in e eb a es such as echmode ms, hyd Olds, and b yozoans .. (Laubi z & Mills, 1972; Gue a-Ga cia, 2001), Wes e n Paclllc, ! . Al hough he cap ellids a e e y impo an as seconda y and e ia y p oduce s in ma ine ecosys ems, hey ha e been MATERIAL AND METHODS poo ly s udied on opical a eas o Indo-Wes Paci ic, Recen ly, Takeuchi & Sagamo o (1998) illus a ed he The Specimens s udied in he p esen pape we e collec ed .j ., necessi y o s udies on he Cap ellidea inhabi ing his egion, in shallow wa e s om Ma induque Island, Panglao Island i Laubi z (1991) men ioned ha knowledge o he cap ellid and Pamilacan Islands (Fig. 1). In 1996, Ma coppe species in hese .egions e~ained spa se bec~use o~ he small Company in co-ope a ion wi h he Aus alian Museum numbe o specImens a ailable o analysIs. ThIS lack o B.S ' d 1 d 1. h' ..usmess e lces e e ope a samp mg p og amme 0 e s udies con as s WI h he many s udIes ca Ied ou along , J.h h P. i (Tak h.1999) mac oin e eb a es o he es ua Ine auna om he Wes apan m e no -wes em acl lC euc 1, ..., .1 Coas o Ma Induque Island o e alua e he Impac o lll1mng ! The i s s udies o he cap ellids om Philippines and nea by ac i i ies on coas al a eas. Ten s a ions on wo ansec s (A,B a eas we e conduc ed by Maye (1903), who ga e he bes and C-J) we e selec ed along he wes coas , The samples o e iew o he egion in his monog aph o he wo ld collec ed in Panglao and Pamilacan Island (K,L) we e pa Cap ellidea. A e his, Maye (1904) and Si ap akasam o a gene al sampling p og amme on ma ine in e eb a es : (1969, 1977) deal wi h he cap ellids om S i Lanka. conduc ed by he Aus alian Museum, The samples om Laubi z (1991). eco ded ~ ~ species, .m~y o which had no Ma induque Island we e collec ed using a 0.06 m2 an Veen been epo ed smce he ongmal descnpuon, om he wes e n g ab and samples om Panglao and Pamilacan Islands we e Paci ic based on specimens collec ed du ing F ench 11 d b SCUBA di .All ll'd i d . h., ..co ec e y mg, cap e 1 s we e lxe WI Oceanog aphic Expedluons o New Caledoma, IndonesIa and Ph.l.. H h 1. d a o malin-sea wa e solu ion and ans e ed o e hanol 70% Ilppmes, owe e , e samp es we e commg om eep s a ions (mos o hem mo e han 400 m deep) and no li o al a e so mg, The speCImens a e deposI ed m he Aus ahan i species we e in es iga ed. Museum, Sydney (AM). , 395 Gue a-Ga cia: Cap ellidea om Philippines Lis o s a ions (see Fig. I) TAXONOMY A-B: Boa , No hwes Coas o Ma induque Island (13°30' S, FAMILY PHTISICillAE V ASSILENKO, 1968 121°30'E), Ma coppe P ojec , Dec.1996, an Veen h 11 . (I1880)Me ap o o no ae o andzae Haswe I, G ab. Dep hs: A(5.0m), B(7.Sm). (Fig. 2) C-J: Gasan, Sou hwes Coas o Ma induque Island P o o no ae-hollandiae Haswell, 1880: 275-276, Pl. 2 ig. 3; (13°20'S, 121°30'E), Ma coppe P ojec , Dec.1996, Maye , 1882: 26; 1890: 14-15; S ebbing, 1888: 1230-1232. an Veen G ab. Dep hs: C(5.3m), D(S.4m), E(7.8m), Me ap o o no aehollandiae -Maye , 1903: 26-27, Pl. 1 igs. 11- . 12, Pl. 6 igs. 24-28, Pl. 9 igs 3, 50; S ebbing, 1910: 651-652; F(8.3m), G(8.7m), H(22.7m), I(22.8m), J(25m). McCain & S einbe g, 1970: 56; Laubi z 1991: 103-104, Fig. K: Cebucao Beach, Panglao Island (9°38'N, 123°49'E), 1. coil. W. F. Ponde , 28 Ap . 1989, algal washings om Ma e ial examined. -1 male, 1 emale (L) (AM P61359). g assy ee la , 2 m dep h. R k Th Mb.1d... h dema s. -e genus e ap o o can e eaSI y ls inguls e L: Pamilacan Island, Bohol (9°30'N, 123°55'E), coil. I. om he emaining gene a o he amily Ph isicidae by he Lh I M1989 bbl hi .. p esence o only one pai o abdominal appendages. Al hough oc, ay. , u e was ngs om nngmg ee , h .. d. h d. e speCImens eXamIne m e p esen s u y a e m ag eemen 2 m dep h. wi h hose desc ibed by Haswell (1880) and edesc ibed by Luzon S ai ~ q ~ °0 D Sou h China Sea Philippine B. A Sea . MARIND U QUE ISLAND ":;'). .~ E V OQ~ ~: ~H ~-'C ~ ~ NV~"" JI. F D .' - l' ~ ~ .. 'Qo6 ~~ g~.~ L Sulu Sea ~. 00 0 ~..,~ q 0:> 200 km 4::1'" dO ~ 9 Fig. 1. Map o Philippines showing he sampling locali ies. 396 THE RAFFLES BULLETIN OF ZOOLOGY 2002 Maye (1903) and Laubi z (1991), he ype ma e ial o M. Dis ibu ion. -Type locali y: Po Jackson, Aus alia no aehollandiae is los (Sp ing ho pe & Low y, 1994) and (Haswell, 1880). O he eco ds: Banda Sea, Indonesia, Sou h he o iginal desc ip ion o Haswell (1880) is oo simple by A ica (McCain & S einbe g, 1970), New Caledonia and he le el o he modem axonomy. Fu he mo e, he wide Philippines (Laubi z, 1991). I dis ibu ion o M. no aehollandiae om he empe a e egion ' o Aus alia o he opical a ea o Indo-wes Paci ic is also P .,n~ M1903 o oge on mJOW us aye , unde deba e. Howe e , M. no aehollandiae, is now being (Fig. 3) edesc ibed based on specimens collec ed om New Sou h Wales, nea he ype locali y (Takeuchi, in p ep.). The P o oge on in la us Maye , 1903: 28-29, Pl. 1 ig. 13, Pl. 6 igs. p esen specimens om he Philippines a e simila o hose 29-32, Pl. 9 igs. 11, 35, 51; U inomi, 1947: 69. om New Sou h Wales, bu di e om specimens collec ed .H G ' ..Ma e ial examined. -1 male (F) (AM P61361); 1 male (I) (AM In ong Kong ( ue a-Ga cIa & TakeuchI, In p ep.). The P61362); 2 emales (J) (AM P61363). ecology o Me ap o o no aehollandiae is s ill poo ly known; his species has been ound be ween 4-790 m. deep, li ing Rema ks. -The o iginal desc ip ion o his species by Maye be ween an ipa ha ians, echinode ms (Laubi z, 1991) and (1903) is in insu icien de ail, and a edesc ip ion is clea ly ubble co als (p esen s udy). needed. Howe e , as a edesc ip ion o he genus and species ./ B Fig. 2. Me ap o o no aehollandiae (Haswell, 1880). La e al iew. A, male; B, emale. Scale ba : 1 mm. 397 Gue a-Ga cia: Cap ellidea om Philippines is al eady being p epa ed in a sepa a e e isiona y wo k o his species a oids he shallowes s a ions, p e e ing dep hs he amily Ph isicidae o be published la e (Gue a-Ga cia, mo e han 20 me e s. in p ep.), I ha e included in he p esen s udy only he la e al . Dis ibu ion. -Type locali y: Dongala, Celebes, Indones a VIew o P. m la us, whIch IS e y cha ac ens lc and use ul (M C . & S . b 1970) O h d T b B... i .c am e n e g, .e eco s: ana e ay, o quIck Iden llca lon. Japan (McCain & S einbe g, 1970). This s udy ep esen s he i s eco d o he species o he Philippines. The genus P o oge on is cha ac e ised by he absence o abdominal appendages. This cha ac e is also p esen in he genus Pseudop o o Maye , 1903, inside he Ph isicidae. FAMILY CAPRELLIDAE LEACH, 1814 Ne e heless he ea u e o he pe eopods 3 and 4 in males o P o oge on in la us is unique inside he Cap ellidea; he Deu ella philipl:'inensis, new species ca pus, p opodus and dac ylus a e cu ed, and wi h la e al (FIgS. 4-8) expansions. Fu henno e, he mandibula palp is educed o M .1.dHI I(AM P61370) B a e la examIne .-0 0 ype -ma e , oa, one a Icle m P o oge on whIle I IS nonnally 3-a lcula e m Philippines, Dec.1996, 5.0 m. deep (A), an Veen G ab. Pseudop o o. The specimens s udied a e in comple e ag eemen wi h he ype ma e ial desc ibed by Maye (1903). Allo ype - emale (AM P61371), Gasan, Philippines, Dec.1996, Al hough he ma e ial is conside ably limi ed, i seems ha 7.8 m. deep (E), an Veen G ab. A B Fig. 3. P o oge on in la us Maye , 1903. La e al iew. A, male; B, emale. Scale ba : I mm. 398 THE RAFFLES BULLETIN OF ZOOLOGY 2002 O he s -I emale (AM P61364) (B); 2 males (AM P61368) (C); Desc ip ion. -Holo ype male 2 males, 2 emales (AM P6 I 366) (D); I emale (AM P61367) (G); Body leng h. 6.1 Inm. I male (AM P61365) (H). La e al iew (Fig. 4A). Body do sally smoo h. Head ounded. Pe eoni e 1 used wi h head, su u e no p esen ; an e ola e al Dis ibu ion. -Type locali y: Boa , No hwes Coas o ma gino pe eoni e2wi ha iangu1a p ojec ion;pe eoni es l Ma induque Island (13°30'S, 121°30'E), 5.0-7.5 m deep. 2-5 inc easing in leng h; pe eoni e 7 he sho es . O he eco ds: Gasan, Sou hwes Coas o Ma induque Gills (Fig. 4A). Elonga e, leng h abou 3.5 imes wid h. Island, 5.3-22.7 m deep. (13°20'S, 121°30'E). Mou hpa s. Uppe lip (Fig. 5B) symme ically bilobed, pubescen apically. Mandibles (Figs. 6A,B) wi h h ee- E ymology. -Named philippinensis alluding o Philippines, a icula e palp; dis al a icle o palp wi h a se al o mula 1- he place whe e he species was ound. 1-1 and h ee knobs; second a icle p o ided wi h h ee A Fig. 4. Deu ella philippinensis, new species. La e al iew. A, male; B, emale. Scale ba : I n n. 399 Gue a-Ga cia: Cap ellidea om Philippines A-C A :' ~ ~. -~- '~ -,- ;. .-I E ' ~~~::::., /' ' ~ E 0/ Fig. 5. Deu ella philippinensis, new species. Male. A, lowe lip; B, uppe lip; C, maxilliped; D, maxilla 1; E, maxilla 2. Scale ba s: 0.05 nm. 400 THE RAFFLES BULLETIN OF ZOOLOGY 2002 A ..,../, ~" ~ Fig. 6. Deu ella philippinensis, new species. Male. A, le mandible; B, igh mandible. Scale ba : 0.1 mm. 401 Gue a-Ga cia: Cap ellidea om Philippines A E Fig. 7. Deu ella philippinensis, new species. A-D, male. A, an enna 1; B, an enna 2; C, gna hopod 1; D, gna hopod 2. E, emale gna hopod 2. Scale ba s: A,B,D,E: 0.5 mm; C: 0.2 mm. 402 THE RAFFLES BULLETIN OF ZOOLOGY 2002 simple se ae; mandibula mola obus ; le mandible (Fig. swimming se ae; lagellum wo-a icula e. 6A) wi h inciso i e- oo hed, lacinia mobilis i e- oo hed Gna hopods. Gna hopod 1 (Fig. 7C) basis as long as ischium, ollowed by h ee plumose se ae; inciso o igh mandible me us and ca pus combined; p opodus elonga e, leng h abou (Fig. 6B) i e- oo hed, lacinia mobilis se a e, wi h h ee wo imes wid h, palm wi h a p oximal g asping spine and ee h dis ally; mola lake absen . Lowe lip (Fig. 5A) wi h wo den icula e ma gins; dac ylus se a e on he pos e io inne lobes well-dema ca ed; inne and ou e lobes p o ided hal . Gna hopod 2 (Fig. 70) inse ed on he hal o pe eoni e wi h se ulae on apical end. Maxilla 1 (Fig. 50) ou e lobe 2; basis abou 0.7 imes he leng h o pe eoni e 2; ischium wi h se en obus se ae se a e; dis al a icle o he palp wi h ec angula ; me us ounded; ca pus sho and ec angula ; ou obus se ae and ou ee h dis ally, and wo se ae p opodus elonga e, abou 1.2 imes as long as he basis; palm medially. Maxilla 2 (Fig. 5E) inne lobe ec angula , ca ying wi h a p oximal p ojec ion elonga e and p o ided wi h one six se ae dis ally and a ow o small se ulae la e ally; ou e g asping spine and wo mo e iangula p ojec ions in he lobe, a li le la ge han inne lobe, wi h eigh apical se ae. middle and dis ally, espec i ely; dac ylus long, wi h se ulae Maxilliped (Fig. 5C) inne pla e ec angula wi h h ee on en al ma gin. plumose se ae and one simple se a; ou e pla e abou 3.5 imes Pe eopods. Pe eopods 3 and 4 subequal, one-a icula e, as la ge as inne pla e, wi h six se ae; palp ou -a icula e, leng h abou one- hi d o gills, wi h se en se ae. Pe eopods dac ylus wi hou wo ows o se ulae. 5-7 missing. An ennae. An enna 1 (Fig. 7 A) abou he hal o body leng h; Penes (Fig. 8C) la ge, si ua ed la e ally, leng h abou wo lagellum b oken in he holo ype (six-se en a icula e in he imes wid h. emaining males examined). An enna 2 (Fig. 7B) wi hou Abdomen (Fig. 80) wi h a pai o appendages, a pai o A C B Fig. 8. Deu ella philippinensis, new species. A-C, male. A, pe eopod 3; B, pe eopod 4; C, abdomen ( en al iew); D, emale abdomen ( en al iew). Scale ba : 0.1 mm. 403