Tunepugettia corbariae n. sp.

(Figs. 10A, 11 D–F, 12A–D)

Material examined. Holotype: male (31.4 × 21.2 mm) (MNHN-IU-2014-9773), stn CP4334, Ainto Bay, southeast New Britain, Solomon Sea, Papua New Guinea, 06°08’S 149°10’E, 430–620 m, coll. MADEEP Expedition, 6 May 2014 . Paratypes: 2 males (31.0 × 19.7 mm, 23.7 × 15.3 mm) (ZRC 2018.1491, ex. MNHN-IU- 2011-2506), stn CP3681, Vitu Islands, Papua New Guinea, 04°38’S 149°27’E, 564–712 m, coll. BIOPAPUA, 27 September 2010 .— 1 female [photographed] (35.1 × 24.1 mm) (ZRC 2018.1492, ex. MNHN-IU-2013-3043), stn CP4339, Ainto Bay, southeast New Britain, Solomon Sea, Papua New Guinea, 06°10’S 149°18’E, 510–743 m, coll. MADEEP Expedition, 7 May 2014 .— 1 ovigerous female (37.2 × 25.5 mm) (ZRC 2018.1493, ex. MNHN-IU-2013-3330), stn CP4445, New Ireland, Papua New Guinea, 02°15’S 150°17’E, 342 –380 m, coll. KAVIENG 2014, 1 September 2014 .— 1 female (29.4 × 18.2 mm) (MNHN-IU-2011-3293), stn CP3690, southeast point of Manus Island, Papua New Guinea, 02°14’S 147°16’E, 611–618 m, coll. BIOPAPUA, 29 September 2010 .— 1 ovigerous female (36.0 × 23.1 mm) (ZRC 2018.1494, ex. MNHN-IU-2013-3019), stn CP4338, southeast New Britain, Solomon sea, Papua New Guinea, 06°06’S 149°17’E, 410–614 m, coll. MADEEP Expedition, 7 May 2014 .— 1 female (17.0 × 10.2 mm) (MNHN-IU-2011-1584), stn CP3774, Jacquinot Bay, New Britain, Papua New Guinea, 05°35’S 151°35’E, 470–680 m, coll. BIOPAPUA, 16 October 2010 .— 1 female (19.5 × 12.6 mm) (MNHN-IU-2011-2008), stn CP3707, off the coast of Madang, Papua New Guinea, 04°59’S 145°50’E, 460–466 m, coll. BIOPAPUA, 2 October 2010 .— 1 male [photographed] (22.8 × 14.4 mm) (MNHN-IU- 2013-2352), stn CP4266, Papua New Guinea, 04°35’S 152°25’E, 575–616 m, coll. 24 April 2014 .—1 ovigerous female (36.5 × 25.2 mm), 1 female (29.1 × 19.1 mm) (MNHN-IU- 2013-15486), stn CP3964, east Malamal Passage, Papua New Guinea, 05°07’S 145°50’E, 527–539 m, coll. PAPUA NIUGINI, 30 November 2012 .— 1 male (33.1 × 23.0 mm) (MNHN-IU-2011-1526), stn CP3635, south of Lae, Gulf of Huon, Papua New Guinea, 07°29’S 147°33’E, 280–302 m, coll. BIOPAPUA, 23 August 2010 .— 1 female (23.2 × 15.3 mm) (MNHN-IU-2013-15326), stn CP4008, southeast Tuam Island, Solomon Sea, Papua New Guinea, 06°04’S 148°10’E, 500–555 m, coll. PAPUA NIUGINI, 11 December 2012 .— 1 male (15.5 × 9.6 mm) (MNHN- IU-2013-15325), stn CP3970, west Karkar Island, Bismarck Sea, Papua New Guinea, 04°39’S 145°52’E, 573 m, coll. PAPUA NIUGINI, 4 December 2012 .— 1 female (26.3 × 16.0 mm) (MNHN-IU-2013-15330), stn CP3981, north of Long Island, Bismarck Sea, Papua New Guinea, 05°11’S 147°03’E, 688 m, coll. PAPUA NIUGINI, 6 December 2012 . – 1 female (27.8 × 17.8 mm) (MNHN-IU-2013-15329), stn CP4050, west Kairiru Island, Bismarck Sea, Papua New Guinea, 03°18’S 143°27’E, 495–510 m, coll. PAPUA NIUGINI, 19 December 2012 .— 1 female with Sacculina (26.0 × 17.2 mm) (MNHN-IU-2013-15327), stn CP4006, southeast Tuam Island, Solomon Sea, Papua New Guinea, 06°03’S 148°08’E, 440–475 m, coll. PAPUA NIUGINI, 11 December 2012 .— 1 female (30.1 × 19.7 mm) (MNHN-IU-2013-15328), stn CP3970, west Karkar Island, Bismarck Sea, Papua New Guinea, 04°39’S 145°52’E, 573 m, coll. PAPUA NIUGINI, 4 December 2012 .— 1 male (27.8 × 18.5 mm) (MNHN-IU-2013-585), stn CP3962, west Rempi area, Papua New Guinea, 04°59’S 145°51’E, 598–614 m, coll. PAPUA NIUGINI, 29 November 2012 .— 1 male (12.5 × 7.6 mm) (MNHN-IU-2011-1413), stn CP3780, Wide Bay, Papua New Guinea, 05°05’S 152°02’E, 782–1085 m, coll. BIOPAPUA, 17 October 2010 .— 1 female (10.5 × 6.6 mm) (MNHN-IU- 2014-19097), stn CP4449, New Ireland, Papua New Guinea, 02°10’S 150°11’E, 623–908 m, coll. KAVIENG 2014, 1 September 2014 .— 1 female (11.8 × 7.5 mm) (MNHN-IU-2011-907), stn CP3647, off coast of Lae, Gulf of Huon, Papua New Guinea, 06°47’S 147°12’E, 592–660 m, coll. BIOPAPUA, 25 August 2010 .

Diagnosis. Carapace pyriform, covered with layer of setae and long tufts of setae on edge of gastric region and lateral margins of carapace (Figs. 10A, 11D). Postorbital lobe flattened at side, protecting eye. Carapace regions well defined with granules on each swollen region; hepatic spine swollen basally; gastric region swollen with 3 granules, 1 granule on metagastric region, and 2 granules on lower margin of protogastric region; cardiac region with large swollen granule; lateral spine swollen basally with another granule above (Fig. 11D, 11F). Antennal flagellum equal to or slightly longer than pseudorostral spines. Basal antennal article longer than broad, with blunt distal angle and convex edge. Pterygostomial region with 3 granules on outer margin (Fig. 11E). Cheliped slender, propodus carinate; carpus carinate on margin; merus triangular in cross-section, carinate on all margins. Ambulatory legs covered with setae, with margins of segments carinate. Male thoracic sternum slightly depressed anteriorly; sternites 3 and 4 lateral margins constricted slightly, surface concave (Fig. 11E). Male pleon triangular, all 6 somites and telson free (Fig. 11E). G1 straight with distal tip composed of 2 lobes (Fig. 12 A–D).

Etymology. The species is named in honour of our colleague, Laure Corbari, curator of Crustacea in the MNHN, and cruise leader of the MADEEP Expedition aboard R.V. “ Alis ”.

Coloration. Carapace and cheliped orange to pale pink; ambulatory legs white (Fig. 10A).

Type locality. Ainto Bay, southeast New Britain, Papua New Guinea

Remarks. Tunepugettia corbariae n. sp. differs from T. sagamiensis in the following characters: the pseudorostral spines of T. corbariae n. sp. are not fused along the proximal third of their length (Fig. 11D) (versus fused on proximal one-third to two-fifths in T. sagamiensis; Fig. 11A); the gastric region is distinctly swollen with the lateral spine swollen basally with another granule above it (Fig. 11D) (versus gastric region slightly swollen with the lateral spine not swollen basally with absent of granule above in T. sagamiensis; Fig. 11A); and the G1 has the bifid angle not as strong and distinct (Fig. 12 A–D) (versus strong and distinct in T. sagamiensis; cf. Ng et al. 2017: fig. 7A–C). Tunepugettia corbariae n. sp. is currently only known from its type locality, Papua New Guinea.