Bathycheles incisus Forest, 1987

Komai, Tomoyuki & Chan, Tin-Yam, 2016, “ Symmetrical ” hermit crabs of the family Pylochelidae (Crustacea: Decapoda: Anomura) collected by the “ BIOPAPUA ” and “ PAPUA NIUGINI ” expeditions in the Papua New Guinea, with descriptions of two new species, Zootaxa 4088 (3), pp. 301-328 : 305-306

Bathycheles incisus Forest, 1987

Pylocheles (Bathycheles) incisus Forest, 1987a: 70 , figs. 16a–g, 18a–g, pls. 4A–C, 6A, B [type locality: Philippines, 810–820 m]; 1987b: 316, fig. 3.—Komai & Hung 2000: 130, figs. 1–3.—McLaughlin et al. 2007: 27, unnumbered figs.; Lemaitre et al. 2009: 5.

Bathycheles incisus .—McLaughlin & Lemaitre 2009: 184, fig. 6A, B.

Material examined. BIOPAPUA, stn CP 3632, Huon Gulf, 06°56’S, 147°08’E, 700–740 m, 22 August 2010, 1 ovigerous female (sl 6.0 mm), 1 juvenile (sl 3.0 mm), MNHN-IU-2011-2996; same data, 1 male (sl 5.0 mm), MNHN-IU-2011-1107; stn CP 3638, Huon Gulf, 07°23’S, 147°34’E, 890–895 m, 23 August 2010, 1 female (sl 5.4 mm; photographed), MNHN-IU-2011-2800; stn CP 3650, S of New Hanover, 02°39’S, 150°03’E, 805–823 m, 27 August 2010, 1 juvenile (sl 3.5 mm), MNHN-IU-2011-3086 (photographed); stn CP 3672, N of Rabaul, 04°04’S, 151°50’E, 702–724 m, 24 September 2010, 1 male (sl 6.0 mm), MNHN-IU-2011-1902; stn CP 3674, N of Rabaul, 04°02’S, 151°50’E, 788–805 m, 24 September 2010, 1 male (sl 4.2 mm), 1 female (sl 5.1 mm), MNHN-IU-2011- 3233; stn CP 3679, Kimbe Bay, 05°21’S, 150°45’E, 490–715 m, 25 September 2010, 1 ovigerous female (sl 5.4 mm), MNHN-IU-2011-1561; same data, 1 male (sl 6.8 mm), MNHN-IU-2011-3110; stn CP 3714, Astrolabe Bay, 05°20’S, 145°51’E, 676–720 m, 5 October 2010, 1 ovigerous female (sl 7.8 mm), MNHN-IU-2011-1667; same data, 1 female (sl 7.3 mm), MNHN-IU-2011-3335; stn CP 3730, Mambare Bay, 07°51’S, 148°01’E, 710–750 m, 8 October 2010, 1 male (sl 7.0 mm), MNHN-IU-2011-1177; station number missing, 2 males (sl 7.2, 8.0 mm), 1 female (sl 7.3 mm), 1 ovigerous female (sl 6.1 mm), MNHN-IU-2011-3881.

PAPUA NIUGINI (partially measured), stn CP 3962, W of Rempi Area, 04°59’S, 145°51’E, 598–614 m, 29 November 2012, 2 ovigerous females, MNHN-IU-2013-15752; same data, 2 males, 2 ovigerous females, MNHN- IU-2013-15753; stn CP 3963, SE of Sek Island, 05°06’S, 145°53’E, 960–980 m, 30 November 2012, 1 ovigerous female (photographed), MNHN-IU-2013-1065; same data, 2 males, 3 females, MNHN-IU-2013-13215; same data, 1 male, MNHN-IU-2013-15769; stn CP 3965, SE of Sek Island, 05°06’S, 145°53’E, 980–985 m, 1 December 2012, 5 males, 2 females, 1 ovigerous female, MNHN-IU-2013-15755; stn CP 3966, E of Wonand Island, 05°09’S, 145°51’E, 650 m, 1 December 2012, 3 males, 1 female, 2 ovigerous females, MNHN-IU-2013-15751; stn CP 3967, SE of Sek Island, 05°07’S, 145°53’E, 980 m, 2 December 2012, 1 male, 3 females, 1 ovigerous female, MNHN-IU-2013-15737; same data, 1 male, 1 female, MNHN-IU-2013-15767; stn CP 3969, 04°35’S, 145°53’E, 525–639 m, 4 December 2012, 1 male, MNHN-IU-2013-13212; stn CP 3970, W of Karkar Island, Bismarck Sea, 04°39’S, 145°52’E, 573 m, 4 December 2012, 1 ovigerous female, MNHN-IU-2013-15754; stn CP 3971, W of Karkar Island, Bismarck Sea, 04°37’S, 145°51’E, 832 m, 4 December 2012, 2 males, 1 female, MNHN-IU-2013- 15766; stn CP 3981, N of Long Island, 05°11’S, 147°03’E, 686 m, 6 December 2012, 2 males, 2 ovigerous females, MNHN-IU-2013-15740; same data, 1 female, 1 ovigerous female, MNHN-IU-2013-15760; same data, 1 female, MNHN-IU-2013-15762; stn CP 3985, N of Long Island, Bismarck Sea, 05°09’S, 147°02’E, 805–865 m, 6 December 2012, 4 males, 1 female, MNHN-IU-2013-15739; stn CP 3994, Vitiazi Strait, Solomon Sea, 06°00’S, 147°35’E, 648–652 m, 9 December 2012, 1 female, MNHN-IU-2013-15765; stn CP 4001, Hanisch Harbour, N of Huon Gulf, 06°45’S, 147°39’E, 720–965 m, 10 December 2012, 3 males, 1 female, MNHN-IU-2013-15738; stn CP 4002, Hanisch Harbour, N of Huon Gulf, Solomon Sea, 06°45’S, 147°38’E, 480–680 m, 1 ovigerous female, MNHN-IU-2013-15768; stn CP 4003, N of Huon Gulf, Solomon Sea, 06°46’S, 147°38’E, 550–780 m, 10 December 2012, 1 female, MNHN-IU-2013-15759; stn CP 4012, Dampier Strait, 05°36’S, 148°13’E, 500–640 m, 12 December 2012, 1 male, 3 ovigerous females, MNHN-IU-2013-15747; same data, 1 ovigerous female, MNHN- IU-2013-15750; stn CP 4013, Dampier Strait, 05°36’S, 148°13’E, 620–780 m, 12 December 2012, 2 males, 4 ovigerous females, MNHN-IU-2013-15745; same data, 1 female, 1 ovigerous female, MNHN-IU-2013-15761; stn CP 4014, Dampier Strait, E of Umboi Island, Solomon Sea, 05°35’S, 148°13’E, 630–870 m, 12 December 2012, 3 males, 3 ovigerous females, MNHN-IU-2013-15748; same data, 1 male, 1 female, 1 ovigerous female, MNHN-IU- 2013-15749; same data, 1 male, 1 female, MNHN-IU-2013-15763; stn CP 4026, Astrolabe Bay, 05°22’S, 145°51’E, 620–677 m, 14 December 2012, 6 males, 1 female, 3 ovigerous females, MNHN-IU-2013-15741; same data, 1 male, MNHN-IU-2013-15746; stn CP 4027, Astrolabe Bay, 05°21’S, 145°53’E, 800–820 m, 14 December 2012, 2 males, 1 female, 1 ovigerous female, MNHN-IU-2013-15743; stn CP 4029, Cape Croisiles, 04° 52' S; 145° 51' E, 680-689 m, 1 male, 5 ovigerous females, MNHN-IU-2013-15744; stn CP 4032, Cape Croisiles, 04°52’S, 145°50’E, 610–620 m, 16 December 2012, 2 ovigerous females, MNHN-IU-2013-15756; stn CP 4033, Cape Croisiles, 04°52’S, 145°53’E, 780 m, 16 December 2012, 1 male, 2 females, 5 ovigerous females, MNHN- IU-2013-15758; stn CP 4036, E of Kotakot, 04°29’S, 145°31’E, 505–510 m, 17 December 2012, 1 male (sl 4.7 mm), MNHN-IU-2014-10297; stn CP 4037, E of Kotakot, 04°30’S, 145°34’E, 600–660 m, 17 December 2012, 1 female, 4 ovigerous females, MNHN-IU-2014-10295; stn CP 4038, E of Kotakot, 04°27’S, 145°34’E, 800–840 m, 17 December 2012, 1 male, 2 females, 2 ovigerous females, MNHN-IU-2013-15764; stn CP 4039, E of Kotakot, 04°19’S, 145°37’E, 1000–1045 m, 17 December 2012, 1 male, 1 female, MNHN-IU-2013-15757; stn CP 4042, Brokenwater Bay, 03°53’S, 144°40’E, 495–693 m, 18 December 2012, 2 ovigerous females, MNHN-IU-2013- 13216; stn CP 4067, Dagreto Bay, Bismarck Sea, 03°17’S, 142°59’E, 680–740 m, 22 December 2012, 1 juvenile, MNHN-IU-2013-11991; stn CP 4070, W of Tarawai Island, Bismarck Sea, 03°10’S, 143°02’E, 740–835 m, 22 December 2012, 6 males, 10 ovigerous females, MNHN-IU-2014-10290; stn CP 4079, W of Karkar Island, Bismarck Sea, 04°34’S, 145°52’E, 960 m, 25 December 2012, 2 males, 5 females, 1 ovigerous female, MNHN-IU- 2014-10296.

Description. See Forest (1987a: 70) and McLaughlin & Lemaitre (2009: 184).

Size. Largest male sl 8.0 mm, largest female sl 7.8 mm, ovigerous females sl 5.4–7.8 mm.

Habitat. Hollows in sunken wood or scaphopod (tusk) shells (Forest 1987a; Komai & Hung 2000; McLaughlin & Lemaitre 2009; this study).

Distribution. Previously known from Taiwan, Philippines, Solomon Islands, Fiji, Vanuatu; 380–2149 m, possibly to 2217 m (McLaughlin & Lemaitre 2009). Newly recorded from Papua New Guinea.