Bathycheles integer (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 : 306-307

Bathycheles integer (Forest, 1987)

Pylocheles (Bathycheles) profundus Forest, 1987a: 74 , figs. 9i, j, 10e, f, 19a–d [type locality: N of Mindanao, Bohol Sea, Philippines, 1344 m]; 1987b: 316, fig. 3.

Pylocheles (Bathycheles) integer Forest, 1987a: 77 , fig. 20a–e [type locality: E of Borneo, Celebes Sea, 447–470 m]; 1987b: 316, fig. 3.—Lemaitre et al. 2009: 5.

Bathycheles integer .—McLaughlin & Lemaitre 2009: 189, figs. 6C, D, 9.

Material examined. BIOPAPUA, stn CP 3646, Huon Gulf, Tami Island, 06°45’S, 147°49’E, 460–485 m, 24 August 2010, 3 males (sl 5.1–9.5 mm), 1 female (sl 5.8 mm), 1 ovigerous female (sl 4.7 mm), MNHN-IU-2011- 3288; same data, 2 males (sl 4.2, 4.3 mm), 1 ovigerous female (sl 7.0 mm), MNHN-IU-2011-3291; same data, 1 male (sl 8.7 mm; photographed), MNHN-IU-2011-3885; same data, 1 female (sl 3.6 mm), MNHN-IU-2011-3905; stn CP 3647, Huon Gulf, 06°47’S, 147°12’E, 592–660 m, 25 August 2010, 1 female (sl 4.3 mm), MNHN-IU-2011- 912; stn CP 3691, SE of Manus Island, 02°11’S, 147°18’E, 499–517 m, 29 September 2010, 2 males (sl 3.4, 8.7 mm), MNHN-IU-2011-2835; same data, 2 male (sl 3.4, 4.4 mm), 2 females (sl 4.4, 4.9 mm), 1 ovigerous female (sl 8.1 mm), MNHN-IU-2011-3017; stn CP 3692, SE of Manus Island, 02°10’S, 147°19’E, 408–448 m, 29 September 2010, 2 males (sl 5.7, 5.9 mm), 1 ovigerous female (sl 6.0 mm), CBM-ZC 13126; stn CP 3707, off Madang, 04°59’S, 145°50’E, 460–466 m, 2 October 2010, 1 male (sl 10.1 mm), 4 ovigerous females (sl 5.6–8.1 mm), MNHN-IU-2011-2047; stn CP 3708, off Madang, 04°58’S, 145°50’E, 502–529 m, 2 October 2010, 2 males (sl 6.3, 10.2 mm), 2 females (sl 4.6, 6.0 mm), 1 ovigerous female (sl 8.8 mm), MNHN-IU-2011-1840; stn CP 3711, Astrolabe Bay, 05°23’S, 145°48’E, 434–447 m, 5 October 2010, 1 male (sl 3.0 mm), 1 female (sl 2.9 mm), MNHN-IU-2011-2261; same data, 1 male (sl 2.8 mm), MNHN-IU-2011-2967; stn CP 3712, Astrolabe Bay, 05°22’S, 145°49’E, 550–551 m, 5 October 2010, 1 male (sl 6.9 mm), 1 female (sl 7.2 mm), 1 ovigerous female (sl 6.0 mm), MNHN-IU-2011-2020; same data, 1 male (sl 2.7 mm), 1 female (sl 6.4 mm), MNHN-IU-2011-2569; stn CP 3713, Astrolabe Bay, 05°22’S, 145°50’E, 608–610 m, 5 October 2010, 1 female (sl 5.2 mm), MNHN-IU-2011- 2017; stn CP 3729, Mambare Bay, 07°52’S, 148°03’E, 573–655 m, 8 October 2010, 1 male (sl 6.2 mm), MNHN- IU-2011-2371; stn CP 3774, Jacquinot Bay, 05°35’S, 151°35’E, 470–680 m, 16 October 2010, 1 ovigerous female (sl 6.4 mm), MNHN-IU-2011-3799; no data, 1 male (sl 4.6 mm), MNHN-IU-2011-5258.

PAPUA NIUGINII (partially measured), stn CP 3959, W of Sek Island, 05°04’S, 145°51’E, 582–587 m, 28 November 2012, 1 male (photographed), MNHN-IU-2013-962; same data, 3 males, MNHN-IU-2013-15732; stn CP 3961, W of Rempi Area, 05°00’S, 145°50’E, 505–521 m, 29 November 2012, 1 male, MNHN-IU-2013-13213; stn CP 3962, W of Rempi Area, 04°59’S, 145°51’E, 598–614 m, 29 November 2012, 1 male, MNHN-IU-2013- 15733; stn CP 3964, E of Malamal Passage, 05°07’S, 145°50’E, 527–539 m, 30 November 2012, 8 males, 4 females, 4 ovigerous females, MNHN-IU-2013-14408; same data, 1 male, 2 ovigerous females, MNHN-IU-2013- 14417; same data, 1 female, MNHN-IU-2013-14419; stn CP 3966, E of Wonand Island, 05·09’S, 145°51’E, 650 m, 1 December 2012, 1 male, 1 ovigerous female, MNHN-IU-2013-14415; stn CP 3978, N of Bagabag Island, 04°45’S, 146°12’E, 456–562 m, 5 December 2012, 1 male, 1 ovigerous female, MNHN-IU-2013-14414; stn CP 3982, N of Long Island, Bismarck Sea, 05°10’S, 147°03’E, 724 m, 6 December 2012, 6 males, 1 female, 5 ovigerous females, MNHN-IU-2013-15742; stn CP 3989, Wab Bay, 05°34’S, 146°23’E, 802–875 m, 8 December 2012, 2 males, 3 females, MNHN-IU-2013-15731; stn CP 4000, W of Cape Gerhards, Huon Gulf, Solomon Sea, 06°47’S, 147°14’E, 650 m, 10 December 2012, 10 males, 10 females, 2 ovigerous females, MNHN-IU-2013- 14409; same data, 1 male, MNHN-IU-2013-14416; stn CP 4002, Hanisch Harbour, N of Huon Gulf, 06°45’S, 147°38’E, 480–680 m, 10 December 2012, 20 males (sl 3.7–9.2 mm), 7 females (sl 2.6–7.4 mm), 24 ovigerous females (sl 5.3–7.9 mm), MNHN-IU-2013-14411; stn CP 4003, Hanisch Harbour, N of Huon Gulf, Solomon Sea, 06°46’S, 147°38’E, 550–780 m, 10 December 2012, 2 males, 2 females, 1 ovigerous female, MNHN-IU-2013- 15729; stn CP 4008, SE of Tuam Island, Solomon Sea, 06°04’S, 148°10’E, 500–555 m, 11 December 2012, 1 male, 1 female, MNHN-IU-2013-14413; stn CP 4012, Dampier Strait, Solomon Sea, 05°36’S, 148°13’E, 500–640 m, 12 December 2012, 3 males, 1 female, 1ovigerous female, MNHN-IU-2013-14418; stn CP 4013, Dampier Strait, 05°36’S, 146°13’E, 620–780 m, 2 females, MNHN-IU-2013-15735; stn CP 4021, 05°25’S, 145°56’E, 500– 870 m, 13 December 2012, 5 males, 5 females, MNHN-IU-2013-15734; stn CP 4024, Astrolabe Bay, 05°22’S, 145°48’E, 420–490 m, 14 December 2012, 3 males, 1 juvenile, MNHN-IU-2013-14410; stn CP 4025, Astrolabe Bay, 05°21’S, 145°49’E, 520–575 m, 14 December 2012, 4 males, 2 females, 4 ovigerous females, MNHN-IU- 2013-15730; stn CP 4036, E of Kotakot, 04°29’S, 145°31’E, 500–510 m, 17 December 2012, 2 males, 3 ovigerous females, MNHN-IU-2014-10292; stn CP 4049, W of Kairiru Island, 03°19’S, 143°27’E, 422–425 m, 19 December 2012, 3 males, 1 female, 1 ovigerous female, MNHN-IU-2013-14412; same data, 2 males, MNHN-IU-2014- 10299; stn CP 4061, N of Vanimo, Bismarck Sea, 02°38’S, 141°18’E, 485–500 m, 21 December 2012, 1 ovigerous female, MNHN-IU-2014-10300; no data, 2 males, 6 females, MNHN-IU-2014-10294.

Description. See Forest (1987a: 77) and McLaughlin & Lemaitre (2009: 189).

Size. Largest male sl 10.2 mm, largest female sl 8.8 mm, ovigerous females sl 4.7–8.8 mm.

Habitat. Cavities in sunken wood or tusk shells (McLaughlin & Lemaitre 2009; this study).

Distribution. Previously known from the Philippines, Solomon Islands, Indonesia; 283–1764 m (McLaughlin & Lemaitre 2009). Newly recorded from Papua New Guinea.

Remarks. After examining additional specimens from the Solomon Islands and the Philippines, McLaughlin & Lemaitre (2009) concluded that Bathycheles integer and B. profundus were conspecific. They choose the name B. integer as the senior synonym.