Rochinia boucheti Richer de Forges & Ng, 2013

Lee, Bee Yan, Forges, Bertrand Richer De & Ng, Peter K. L., 2019, Deep-sea spider crabs of the family Epialtidae MacLeay, 1838, from Papua New Guinea, with a redefinition of Tunepugettia Ng, Komai & Sato, 2017, and descriptions of two new genera (Crustacea: Decapoda: Brachyura: Majoidea), Zootaxa 4619 (1), pp. 1-44 : 13-14

Rochinia boucheti Richer de Forges & Ng, 2013

( Fig. 6B )

Rochinia boucheti Richer de Forges & Ng, 2013: 474 , figs. 5, 6, 8E–H (type locality Solomon Islands).

Material examined. Holotype: male (18.6 × 13.3 mm) (MNHN-IU-2011-5988), stn CP2766, Solomon Islands , 9°19.41’S 160°02.54’E, 371–411 m, coll. SALOMONBOA cruise, 10 September 2007 . Paratype: 1 female (13.2 × 9.0 mm) ( ZRC 2011.1046 ), stn CP2766, Solomon Islands , 9°19.41’S 160°02.54’E, 371–411 m, coll. SALO- MONBOA cruise, 10 September 2007 . Others: Papua New Guinea: 1 male (11.0 × 7.5 mm) ( ZRC 2018.1482 , ex. MNHN-IU-2017-11836), stn CP4447, New Ireland, 02°14’S 150°15’E, 517-658 m, coll. KAVIENG 2014, 1 September 2014 .— 1 male (19.5 × 14.1 mm) ( ZRC 2018.1483 , ex. MNHN-IU-2014-8130) [photographed], stn CP4438, New Ireland, 02°23’S 150°39’E, 490–610 m, coll. KAVIENG 2014, 31 August 2014 .— 2 ovigerous females (16.0 × 11.2 mm, 14.1 × 9.7 mm) ( ZRC 2018.1484 , ex. MNHN-IU-2013-3020) [photographed], stn CP4265, east of New Britain, Solomon Sea, 04°34’S 152°24’E, 487–550 m, coll. MADEEP Expedition , 26 April 2014 .— 1 ovigerous female (17.0 × 12.3 mm) ( ZRC 2018.1485 , ex. MNHN-IU- 2013-2397) [photographed], stn CP4264, east of New Brit- ain, Solomon sea, 04°35’S 152°24’E, 430–523 m, coll. MADEEP Expedition , 26 April 2014 .— 1 ovigerous female (17.9 × 13.0 mm) ( ZRC 2018.1486 , ex. MNHN-IU-2014-9477), stn DW4309, Solomon Sea, north of Normanby Island, 09°50’S 151°31’E, 518–520 m, coll. MADEEP Expedition , 3 May 2014 .— 1 male (12.6 × 8.5 mm), 1 female (10.0 × 6.0 mm) (MNHN-IU-2011-3359), stn CP3739, off coast of Woodlark Islands , 09°09’S 152°15’E, 503–546 m, coll. BIOPAPUA, 10 October 2010 .— 2 females (11.2 × 7.1 mm, 10.5 × 7.0 mm) (MNHN-IU-2011-873), stn CP3659, off coast of Rabaul , 04°14’S 152°17’E, 508 m, coll. BIOPAPUA, 22 September 2010 .— 1 male (20.1 × 14.3 mm) (MNHN-IU-2011-1960), stn CP3742, off coast of Woodlark Islands , 09°08’S 152°19’E, 448–470 m, coll. BIOPAPUA, 10 October 2010 .— 2 males (10.7 × 7.2 mm, 9.5 × 6.1 mm) (MNHN-IU-2015-1446), stn CP4438, New Ireland, 02°23’S 150°39’E, 490–610 m, coll. KAVIENG 2014, 31 August 2014 .— 1 male (13.3 × 8.6 mm), 1 female with Sacculina (13.9 × 9.3 mm) (MNHN-IU-2017-11837), stn CP4437, New Ireland, 02°23.4’S 150°37.4’E, 416–535 m, coll. KAVIENG 2014, 31 August 2014 .— 1 female (17.1 × 12.0 mm) (MNHN-IU-2014-8045) [photographed], stn CP4447, New Ireland, 02°14’S 150°15’E, 517–658 m, coll. KAVIENG 2014, 1 September 2014 .— 1 male (18.8 × 13.0 mm) (MNHN-IU-2017-11838), stn CP4444, New Ireland, 02°15’S 150°14’E, 417–421 m, coll. KAVIENG 2014, 1 September 2014 .— 1 female (14.3 × 9.5 mm) (MNHN-IU-2014-8010) [photographed], stn CP4422, New Ireland, 02°21’S 150°38’E, 496–609 m, coll. KAVIENG 2014, 28 August 2014 .— 1 ovigerous female (15.9 × 11.3 mm) (MNHN-IU-2017-11839), stn CP4339, Ainto Bay, southeast New Britain, Solomon Sea, 06°10’S 149°18’E, 510–743 m, coll. MADEEP Expedition , 7 May 2014 .— 1 male (13.3 × 9.1 mm) (MNHN-IU- 2014-18552), stn DW4320, off coast of Marshall Bennett Island, west Woodlark Island, Solomon Sea , 08°41’S 151°47’E, 552 m, coll. MADEEP Expedition , 4 May 2014 .— 1 male (15.3 × 10.1 mm) (MNHN-IU- 2011-2144), stn CP3741, 09°14’S 152°18’E, 694–766 m, coll. BIOPAPUA, 10 October 2010 .— 1 ovigerous female (17.1 × 11.8 mm) (MNHN-IU-2011-3268), stn CP3659, off coast of Rabaul, Papua New Guinea , 04°14’S 152°17’E, 508 m, coll. BIOPAPUA, 22 September 2010 .— 1 male (13.4 × 9.2 mm) (MNHN-IU-2014-17501), stn CP4422, New Ireland, 02°21’S 150°38’E, 496–609 m, coll. KAVIENG 2014, 28 August 2014 .— 1 male (16.9 × 11.9 mm), 2 ovigerous females (16.9 × 12.0 mm, 16.2 × 12.0 mm) (MNHN-IU-2011-1815), stn CP3742, off coast of Woodlark Islands , 09°08’S 152°19’E, 448-470 m, coll. BIOPAPUA, 10 October 2010 .— 1 male (18.7 × 13.3 mm), 1 ovigerous female (18.6 × 13.1 mm) (MNHN-IU- 2011-2888), stn CP3739, off coast of Woodlark Islands , 09°09’S 152°15’E, 503–546 m, coll. BIOPAPUA, 10 October 2010 .— 1 female (13.6 × 8.7 mm), 1 ovigerous female (17.5 × 12.6 mm) (MNHN- IU- 2011-2951), stn CP3692, southeast point of Manus Island, 02°10’S 147°19’E, 408–448 m, coll. BIOPAPUA, 29 September 2010 .— 1 male (16.5 × 12.1 mm), 1 female with Sacculina (11.9 × 8.3 mm), 3 ovigerous females (15.8 × 11.3 mm, 14.0 × 9.6 mm, 13.3 × 9.2 mm) (MNHN-IU-2011-1472), stn CP3669, north of Rabaul , 04°08’S 151°56’E, 382-389 m, coll. BIOPAPUA, 24 September 2010 .— 1 female with Sacculina (11.9 × 8.7 mm) (MNHN-IU-2011- 3859), stn CP3655, west of New Hanover , 02°15’S 150°16’E, 402–440 m, coll. BIOPAPUA, 28 August 2010 .

Remarks. Rochinia boucheti Richer de Forges & Ng, 2013 , was described from the Solomon Islands with only two specimens collected between 371 and 456 m. Interestingly, it is more abundant in the PNG collection studied here. The three deep-sea cruises BIOPAPUA, MADEEP, and KAVIENG collected R. boucheti from 421 to 766 m.

The PNG specimens show variations in the number of sharp granules on the carapace (excluding hepatic and lateral branchial spines), with either 17, 19 or 20 granules, and differences in the number of mesogastric granules medially, with either 5 or 6 granules. Rochinia boucheti is recorded for the first time from PNG.

Figures

FIGURE 6. Color in life. A, Rochinia ahyongi McLay, 2009, ovigerous female (12.3 × 9.0 mm) (MNHN-IU-2015-83), Papua New Guinea; B, R. boucheti Richer de Forges & Ng, 2013, male (19.5 × 14.1 mm) (MNHN-IU-2014-8130), Papua New Guinea; C, R. fultoni (Grant, 1905), ovigerous female (18.6 × 11.8 mm) (MNHN-IU-2013-2343), Papua New Guinea; D, R. despereaux n. sp., ovigerous female (16.0 × 10.4 mm) (MNHN-IU-2013-2277); E, R. despereaux n. sp., holotype, male (15.2 × 10.1 mm) (MNHN-IU-2011-3878), Papua New Guinea.