Revision of the spider crab genus Maja Lamarck, 1801 (Crustacea: Brachyura: Majoidea: Majidae), with descriptions of seven new genera and 17 new species from the Atlantic and Indo-West Pacific Author Ng, Peter K. L. Author Forges, Bertrand Richer De text Raffles Bulletin of Zoology 2015 2015-05-29 63 110 225 journal article 10.5281/zenodo.5384590 2345-7600 5384590 40BCDD62-D35E-46D1-95A3-2CC0DF219DEE Paramaja turgida n. sp. ( Figs. 6H , 12 , 13E , F, 14H , 15N–U , 36J, K , 39K , 43N–P , 48H, I , 53L , 55I, J , 68D–F ) Maja gibba – Griffin, 1976: 200 . – T. Sakai, 1976: 239 (part). – Griffin & Tranter, 1986: 216 (part). (not Maja gibba Alcock, 1895 ). Maja kominatoensis – Ng et al., 2008: 123 , Fig. 90. (not Paramaja kominatoensis Kubo, 1936 ). Material examined. Holotype : male (74.1 × 66.8 mm ) ( NMCR ), Balicasag Island , Panglao , Bohol , Philippines , 200–300 m , coll. fishermen with tangle nets, 28 November 2001 . Paratypes : Philippines – 1 male (71.4 × 64.4 mm ) (NSMT-Cr 22329) , 1 male (55.4 × 48.4 mm ), 1 ovigerous female (62.9 × 57.2 mm ) ( AM , ex ZRC 2001.0615 ), same data as holotype . — 1 young male (26.2 × 21.3 mm ) ( ZRC 2001.0616 b), Balicasag Island , Panglao , Bohol , coll. fishermen with tangle nets, 28 November 2001 . — 1 male (69.2 × 64.0 mm), 1 ovigerous female (47.1 × 41.1 mm ) ( ZRC 2013.1185 ), Balicasag Island , Panglao , Bohol , 200–300 m , coll. fishermen with tangle nets, June 2002 . — 1 ovigerous female (dried) (58.4 × 53.4 mm ) ( ZRC 2009.0972 ), Banacon Island , Bohol , coll. local fisherman, 2000 . — 3 females (NSMT-Cr 15388), Balicasag Island , Panglao , Bohol , coll. local fisherman via M. Takeda & H. Komatsu , February 2003 . — 2 males (34.3 × 29.2 mm , 56.4 × 49.7 mm ), 1 female (60.1 × 55.6 mm , with anemone) ( ZRC 2013.1239 ), Balicasag , Panglao , Bohol , 200–300 m , coll. local fishermen with tangle nets, January 2004 . — 1 female (61.3 × 56.6 mm ) ( ZRC 2013.1240 ), Balicasag , Panglao , Bohol , 200–300 m , coll. local fishermen with tangle nets, February 2004 . — 2 males (70.6 × 62.2 mm , 57.8 × 51.5 mm ), 2 ovigerous females (60.2 × 53.1 mm , 62.2 × 55.2 mm ) ( ZRC 2012.1203 ), Balicasag , Panglao , Bohol , 200–300 m , coll. local fishermen with tangle nets, March 2004 . — 1 female (61.9 × 58.4 mm ) ( ZRC 2013.1235 ), northwest Panglao , Bohol , 120–160 m , tangle nets, coll. J. Arbasto , July 2004 – May 2005 . — 1 male (70.4 × 63.9 mm ) ( ZRC 2012.1201 ), station CP 2332, off Pamilacan Island , Bohol Sea , 9°38.8’N 123°45.9’E , coll. PANGLAO 2005, 22 May 2005 . — 1 male (70.9 × 62.2 mm ) ( ZRC 2012.1202 ), station CP 2372, Bohol / Sulu Seas , 9°31.4’N 124°00.6’E , PANGLAO 2005, 24 May 2005 . — 1 male (70.5 × 63.1 mm ) ( ZRC 2012.1204 ), station CP 2397, off Aligbay Island , Maribojoc Bay , Bohol Sea , 9°34.9’N 123°41.7’E , coll. PANGLAO 2005, 31 May 2005 . — 1 male (36.4 × 31.2 mm ) ( MNHN ), station CP 2406, rock-sand-coral substrate, 9°38.8’N 123°46.5’E – 9°39.7’N 123°46.6’E , 331–334 m , Bohol Sea , coll. PANGLAO 2005, 1 June 2005 . — 1 female (59.6 × 54.5 mm ) ( MNHN ), station CP 2383, sandy substrate, 8°43.1’N 123°19.2’E – 8°44.0’N 123°18.7’E , 253–338 m , Bohol Sea , coll. PANGLAO 2005, 29 May 2005 . — 1 male (28.0 × 22.5 mm ) ( ZRC 2013.1237 ), station CP 2331, muddy substrate, 9°37.4’N 123°45.9’E – 9°38.9’N 123°46.9’E , 268.2–273 m , Bohol Sea , coll. PANGLAO 2005, 22 May 2005 . — 1 female (31.0 × 26.5 mm ) ( ZRC 2013.1231 ), station CP 2341, sandy-muddy substrate, 9°26.1’N 123°48.4’E – 9°24.9’N 123°49.3’E , 381–544 m , Bohol Sea , coll. PANGLAO 2005, 23 May 2005 . — 1 female (62.6 × 57.2 mm ) ( ZRC 2013.1241 ), station CP 2363, sandy substrate, 9°0.1’N 123°26.5’E – 9°0.3’N 123°25.8’E , 439–452 m , Bohol Sea , coll. PANGLAO 2005, 26 May 2005 . — 1 female (51.0 × 45.1 mm ) ( ZRC 2013.1236 ), station CP 2392, off Balicasag Island , sandy-muddy substrate, 9°30.1’N 123°43.4’E – 9°29.5’N 123°42.6’E , 242–313 m , Bohol Sea , coll. PANGLAO 2005, 30 May 2005 . — 1 female (50.5 × 44.8 mm , with rhizocephalan, photographed) ( ZRC 2013.1236 ), station CP 2331, muddy substrate, 9°37.4’N 123°45.9’E – 9°38.9’N 123°46.9’E , 268–273 m , Bohol Sea , coll. PANGLAO 2005, 22 May 2005 . — 1 female (33.5 × 29.0 mm) ( ZRC 2013.1230 ), station CP 2396; sandy substrate, 9 °37.1N 123°445’E – 9°36.7N 123°42.9’E , 467–609 m , Bohol Sea , coll. PANGLAO 2005, 31 May 2005 . — 1 female ( ZRC 2013.1234 ), station CP2405, Maribojoc Bay , Panglao , 9°39.0’N 123°46.1’E , 387–453 m , coll. PANGLAO 2005, 1 June 2005 . — 1 male (67.9 × 60.5 mm ) ( MNHN ), station CC 2743 , eastern coast of Luzon Island , coll. AURORA 2007, 2 June 2007 . — 1 female (42.2 × 37.6 mm ) (MNHN- IU-2013-4055), station CP 53, 13°59’N 120°18’E , 215–216 m , coll. RV Coriolis , MUSORSTOM 2, 27 November 1980 . — 1 male (33.7 × 28.4 mm ) ( USNM 48508 ), station 5403, between Leyte and Cebu , 182 fathoms, coll. RV Albatross , 16 March 1909 . Non-type : Philippines –fragments ( USNM 48509 ), station 5536, 279 fathoms, coll. RV Albatross , 19 August 1909 . Solomon Islands – 1 male (25.1 × 19.6 mm ) (MNHN-IU-2013-4051), station CP 1851, 10°28’S 162°00’E , 297–350 m , coll. RV Alis , SALOMON 1, 6 October 2001 . Fig. 8. General habitus, Paramaja kominatoensis . A, holotype male (63.0 × 57.0 mm) (after Kubo, 1936 : fig. 2); B, neotype male (56.6 × 40.4 mm) (SMF 47808), Japan; C, dried male (62.6 × 56.1 mm) (KPM NH0104298), Japan; D, male (76.9 × 69.6 mm) (SMF 47738), Japan; E, female (52.7 × 47.5 mm) (SMF 47736), Japan; F, female (62.0 × 58.0 mm) (SMF 47810), Japan. Fig. 9. General habitus, Paramaja kominatoensis . A, dried male (60.4 × 52.5 mm) (KPM NH124171), Japan; B, dried female (61.0 × 54.6 mm) (KPM NH124171), Japan; C, male (73.0 × 66.0 mm) (PCM), Taiwan; D, male (53.1 × 46.8 mm) (SMF 47728), Japan; E, male (50.5 × 44.6 mm) (SMF 47738), Japan. Fig. 10. General habitus, Paramaja gibba . A, lectotype female (25.1 × 21.2 mm) (NHM 1896.5.14.9), India; B, as Maja gibba (after Alcock & Anderson, 1898 : pl. 21 fig. 5); C, male (65.0 × 59.8 mm) (NSMT-Cr 16618), Andaman Sea; D, male (79.5 × 77.9 mm) (ZRC 2013.1232), Bay of Bengal. Fig. 11. General habitus, Paramaja gibba . A, juvenile male (10.6 × 8.1 mm) (MNHN-IU-2010-54), Madagascar; B, male juvenile (16.4 × 12.5 mm) (MNHN-IU-2010-55), Madagascar; C, male (24.6 × 20.9 mm) (MNHN-IU-2010-61), Madagascar; D, male (58.6 × 52.2 mm) (MNHN-IU-2010-63), Madagascar; E, juvenile female (33.9 × 29.4 mm) (NMV J54316 ), Australia; F, 1 ovigerous female (45.1 × 40.6 mm) (MNHN-IU-2010-467), Madagascar; G, female (46.7 × 41.6 mm) (NMV J61055 ), Australia. Fig. 12. General habitus, Paramaja turgida n. sp. A, paratype male (26.2 × 21.3 mm) (ZRC 2001.0616b); B, paratype female (33.5 × 29.0 mm) (ZRC 2013.1230); C, paratype male (67.9 × 60.5 mm) (MNHN), Philippines; D, paratype female (62.6 × 57.2 mm) (ZRC 2013.1241), Philippines; E, holotype male (74.1 × 66.8 mm) (NMCR), Philippines; F, male (25.1 × 19.6 mm) (MNHN-IU-2013-4051), Solomon Islands. Fig. 13. Frontal views of carapaces, Paramaja species. A , P. kominatoensis , dried male (62.6 × 56.1 mm) (KPM NH0104298), Japan; B, P. kominatoensis , dried male (60.4 × 52.5 mm) (KPM NH124171), Japan; C, P. kominatoensis , dried male (73.0 × 66.0 mm) (PCM), Taiwan; D, P. gibba , male (79.5 × 77.9 mm) (ZRC 2013.1232), Bay of Bengal; E, P. turgida n. sp. , holotype male (74.1 × 66.8 mm) (NMCR), Philippines; F, P. turgida n. sp. , paratype male (67.9 × 60.5 mm) (MNHN), Philippines. Fig. 14. Lateral views of carapaces, Paramaja species. A , P. kominatoensis , dried male (62.6 × 56.1 mm) (KPM NH0104298), Japan; B, P. kominatoensis , female (62.0 × 58.0 mm) (SMF 47810), Japan; C, P. kominatoensis , female (63.5 × 58.5 mm) (SMF 47728), Japan; D, P. kominatoensis , male (50.5 × 44.6 mm) (SMF 47738), Japan; E, P. kominatoensis , dried male (73.0 × 66.0 mm) (PCM), Taiwan [laterally transposed to match other figures]; F, P. gibba , male (79.5 × 77.9 mm) (ZRC 2013.1232), Bay of Bengal; G, P. gibba , female (67.7 × 63.2 mm) (SIO), Indian Ocean; H, P. turgida n. sp. , holotype male (74.1 × 66.8 mm) (NMCR), Philippines. Fig. 15. Left G1s, Paramaja species. A , P. kominatoensis (after Kubo, 1936 : fig. 1B); B-E, P. kominatoensis , male (76.9 × 69.6 mm) (SMF), Japan; F-J, P. kominatoensis , dried male (73.0 × 66.0 mm) (PCM), Taiwan; K-M, P. gibba , male (79.5 × 77.9 mm) (ZRC 2013.1232), Bay of Bengal; N-R, P. turgida n. sp. , paratype male (67.9 × 60.5 mm) (MNHN), Philippines; S-U, P. turgida n. sp. , holotype male (74.1 × 66.8 mm) (NMCR), Philippines. Scales: B, C, F, G, K, N, O, S = 5.0 mm; D, E, H-J, L, M, P-R, T, U = 1.0 mm. Diagnosis. Adult carapace with branchial and gastric regions ovate; dorsal surface convex, covered by numerous rounded and sharp granules, those on median row larger, tuberculate, forming low crest ( Figs. 12 , 13E, F , 14H ). Adult pseudorostral spines almost straight, gently diverging, appears dorso-ventrally flattened ( Figs. 12 , 13E, F , 36J, K ). Supraorbital eave narrow, granulated, with antorbital spine triangular, sharp; intercalated spine irregular, slightly shorter than supraorbital spine; postorbital spine wide, pointing anteriorly, triangular with some granules at base of anterior margin; hepatic area inflated with several granules, largest spiniform, pointing outwards ( Figs. 12 , 13E, F , 36J, K ). Adult male anterior thoracic sternum relatively narrow ( Fig. 48H, I ); lateral margins of anterior edge of male sterno-abdominal cavity straight ( Fig. 48H, I ). Distal part of G1 relatively shorter, tip not bent, in line with rest of G1 ( Fig. 15N–U ). Etymology. From the Latin “ turgidus ” for swollen, alluding to the carapace appearance of the species. Remarks. Paramaja turgida n. sp. is closest to P. gibba , but can be separated by its proportionately narrower male anterior thoracic sternum ( Fig. 48H, I ) (versus relatively broader in P. gibba , Fig. 48F, G ) and the distal part of the G1 is relatively shorter with the tip in line with the rest of the structure ( Fig. 15N–U ) (versus relatively longer with the tip gently bent laterally in P. gibba , Fig. 15K–M ). The chelipeds of adult females of P. turgida are slender and not inflated, while the ambulatory legs are distinctly shorter and more setose ( Fig. 12B, D ). The smallest ovigerous female measured 47.1 by 41.1 mm (ZRC 2013.1185). A young male specimen from the Solomon Islands (25.1 × 19.6 mm , MNHN-IU-2013-4051) ( Fig. 12F ) is tentatively referred to P. turgida . The G1 resembles that of P. turgida , but at this size, it is not easy to separate from P. kominatoensis . The less inflated carapace shape of the specimen is closest to P. turgida and as such, we provisionally refer it here. Adult males will need to be collected to be certain about their identity as the Solomon Islands is some distance from the Philippines . See also discussion for P. gibba and P. kominatoensis .