Paramaya ouch, Ng & Forges, 2015

Ng, Peter K. L. & Forges, Bertrand Richer De, 2015, 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, Raffles Bulletin of Zoology 63, pp. 110-225 : 156-159

publication ID	https://doi.org/ 10.5281/zenodo.5384590
publication LSID	lsid:zoobank.org:pub:40BCDD62-D35E-46D1-95A3-2CC0DF219DEE
persistent identifier	https://treatment.plazi.org/id/745AE90C-6EEF-4115-ABB9-D33F9AECD04F
taxon LSID	lsid:zoobank.org:act:745AE90C-6EEF-4115-ABB9-D33F9AECD04F
treatment provided by	Valdenar
scientific name	Paramaya ouch
status	sp. nov.

Treatment

Paramaya ouch View in CoL n. sp.

( Figs. 1B View Fig , 2D View Fig , 21E, F View Fig , 23D–F View Fig , 37B View Fig , 40B View Fig , 45J, K View Fig , 50B View Fig , 54B View Fig , 70A View Fig )

Material examined. Holotype: male (76.8 × 60.0 mm) ( NMCR), Balicasag Island , Panglao, Bohol, Philippines, coll. local fishermen in tangle nets, July 2003 . Paratypes: Philippines – 2 ovigerous females (75.1 × 58.0 mm, 63.2 × 49.3 mm) ( ZRC 2013.1312 View Materials ), same data as holotype. — 1 male (NSMT-Cr 16646), Balicasag Island, Panglao , Bohol, coll. local fisherman via T. Kase , 6–10 March 1999. — 2 males, 1 female (NSMT-Cr 15391), Balicasag Island, Panglao , Bohol, coll. local fisherman via T. Kase , 6–10 March 1999. — 2 young females (19.0 × 13.7 mm, 28.0 × 20.6 mm) ( ZRC 2013.1282 View Materials , ex part ZRC 2001.0411 View Materials ), Balicasag Island, Panglao , Bohol, coll. fishermen in tangle nets , December 2000. — 3 males (largest 76.5 × 61.3 mm, one smaller male with rhizocephalan), 2 ovigerous females (larger 60.6 × 74.1 mm), 3 females ( ZRC 2001.0577 View Materials ), Balicasag Island, Panglao , Bohol, 200–300 m, coll. fishermen in tangle nets , 28 November 2001. — 4 males (65.0 × 50.4 mm, 53.3 × 40.1 mm, 69.0 × 52.9 mm, 70.7 × 51.7 mm [with rhizocephala], 1 ovigerous female (64.9 × 51.8 mm), 3 ovigerous females (with rhizocephalan) (56.9 × 40.9 mm, 68.9 × 53.5 mm, 58.7 × 42.5 mm), 1 young female (30.0 × 22.5 mm) ( ZRC 2013.1187 View Materials ), Balicasag Island, Panglao , Bohol, 200–300 m, coll. fishermen in tangle nets , June 2002. — 1 juvenile male (2013.1313), Balicasag Island, Panglao , Bohol, 200–300 m, coll. fishermen with tangle nets , June 2002. — 1 male (56.1 × 40.5 mm), 1 female (47.7 × 36.1 mm) ( AM, ex ZRC 2001.0374 View Materials ), Balicasag Island , Panglao, Bohol, 200–300 m, coll. fishermen in tangle nets , December 2000. — 1 female (46.5 × 36.9 mm) ( ZRC 2013.1299 View Materials ), Balicasag Island, Panglao , Bohol, coll. fisherman with tangle nets , 25 October 2003. — 4 males (54.5 × 42.1 mm, 71.4 × 56.5 mm, 75.8 × 62.0 mm, 48.7 × 36.8 mm), 4 females (55.0 × 43.0 mm, 66.5 × 52.5 mm, 57.6 × 44.5 mm, 65.5 × 50.8 mm) ( ZRC 2012.1207 View Materials ), Balicasag, Panglao , Bohol, 200–300 m, coll. local fishermen with tangle nets , November 2003 – May 2004. — 1 male (32.7 × 25.2 mm) ( ZRC 2013.1283 View Materials ), Balicasag Island, Panglao , Bohol, coll. fisherman with tangle nets , February 2004. — 1 female (42.6 × 34.5 mm) ( ZRC 2013.1300 View Materials ), Balicasag Island, Panglao , Bohol, coll. fisherman with tangle nets , May 2004. — 1 male (33.0 × 26.1 mm) ( ZRC 2013.1298 View Materials ), station PN 1, Balicasag Island, Panglao , Bohol, 200–300 m, coll. fishermen with tangle nets , January 2004. — 1 young female ( ZRC 2013.1281 View Materials ), Balicasag Island, Panglao , Bohol, 200–300 m, coll. fishermen with tangle nets , February 2004. — 1 female (53.3 × 43.4 mm) ( ZRC 2013.1305 View Materials ), station PN1, Balicasag Island, Panglao , Bohol, 200–300 m, coll. fishermen with tangle nets , 28 May 2004. — 1 female (53.3 × 43.4 mm) ( ZRC 2013.1305 View Materials ), station PN 1, Balicasag Island, Panglao , Bohol, 200–300 m, coll. fishermen with tangle nets , 28 May 2004. — 2 males (37.2 × 29.3 mm, 50.3 × 38.5 mm [damaged]), 1 female (62.7 × 52.0 mm) ( ZRC 2013.1306 View Materials ), station P4, Balicasag Island, Panglao , Bohol, 200–300 m, coll. fishermen with tangle nets , 4 June 2004. — 1 male (65.0 × 50.6 mm), 1 female (70.0 × 54.6 mm), 2 ovigerous females (69.4 × 53.6 mm, 71.2 × 56.5 mm) ( ZRC 2012.1209 View Materials ), Balicasag, ca. 100 m , 9°31.1’N 123°41.5’E, Panglao , Bohol, 200–300 m, coll. local fishermen with tangle nets, coll. PANGLAO 2004 GoogleMaps , June 2004. — 1 male (69.5 × 53.7 mm), 1 female (41.5 × 30.6 mm) ( ZRC 2012.1208 View Materials ), Maribojoc Bay, Panglao , coll. J. Arbasto , November 2003 – April 2004. — 1 ovigerous female (68.3 × 54.2 mm, with rhizocephala) ( ZRC 2013.1317 View Materials ), northwest coast of Panglao , Bohol, 120–160 m, coll. J. Arbasto , tangle nets, 1 December 2007. — 1 ovigerous female (63.7 × 50.8 mm, with rhizocephala), 1 young female (56.4 × 44.1 mm) ( USNM), northwest coast of Panglao, Bohol, coll. J. Arbasto , tangle nets, 2006. — 1 male (39.7 × 29.6 mm, photographed) ( ZRC 2011.0045 View Materials ), northwest coast of Panglao , Bohol, 80–300 m, coll. J. Arbasto, January-March 2011.

Diagnosis. Pseudorostral horns very long ( Fig. 21E, F View Fig ). Hepatic, lateral and branchial spines very long; median row with 4 or 5 spines: 2 or 3 gastric, 1 cardiac, 1 intestinal; 2 strong spines on posterior carapace margin ( Fig. 21E, F View Fig ). Surface of thoracic sternum distinctly granulated ( Fig. 50B View Fig ). Chela of adult male slender, without distinct carina ( Fig. 54B View Fig ). Ambulatory meri in adults relatively slender, long ( Fig. 21E, F View Fig ). G1 more strongly curved especially distally ( Fig. 23D–F View Fig ).

Etymology. The name is derived from the old English word for jewel and ornament, alluding to the beautiful arrangement of red spines and tubercles of the species. It also indirectly alludes to the exclamation for pain, associated with careless handling of the present spiny species. Used as a noun in apposition.

Remarks. The character used in their keys by Serène & Lohavanijaya (1973), T. Sakai (1976) and Griffin & Tranter (1986) concerning a proximal tooth on the outer margin of antenna looks very variable. On some specimens there are only two branchial spines. Even on the juvenile specimens (female 28 mm carapace length, ZRC 2013.1282) the characteristics of P. ouch n. sp. are well marked: the pseudorostral spines are long and very divergent but less curved upward than in the adults; and the spines on the lateral margin of the carapace are very long.

Paramaya ouch is superficially similar to P. spinigera but can be distinguished easily by the following characters: the spines are proportionately much longer in P. ouch than in P. spinigera ( Fig. 21E, F View Fig versus Fig. 21A–D View Fig ); the antorbital spine is relatively shorter and not as curved as in P. ouch ( Fig. 37B View Fig ) than in P. spinigera ( Fig. 37A View Fig ); and the G1 of P. ouch is more distinctly curved distally ( Fig. 23D–F View Fig ) (versus less curved in P. spinigera , Fig. 23A–C View Fig ).

The structure of the chela is interesting because in P. spinigera , the adult male chela is distinctly inflated and the margins are clearly carinated ( Fig. 54A View Fig ). In adult P. ouch , the male chela is not inflated and there is no distinct carina, although in some of the largest males, the proximal part appears to be weakly carinated ( Fig. 54B View Fig ). Whether the carina is associated with size or dominance, or is a useful species character cannot be ascertained.

Paramaya ouch is very common on the reef slopes of Balicasag Island. The large series of males, females and juveniles were useful to observe the variation of spines with size.

NMCR	New Mexico State University
T	Tavera, Department of Geology and Geophysics
AM	Australian Museum
USNM	Smithsonian Institution, National Museum of Natural History