Sabatia pustulosa Dall, 1895

Valdés, Ángel, 2008, Deep-sea “ cephalaspidean ” heterobranchs (Gastropoda) from the tropical southwest Pacific, Mémoires du Muséum national d'Histoire naturelle 196, pp. 587-792 : 685-689

Sabatia pustulosa Dall, 1895

Figs 48, 49C, D, 50A, 51

Sabatia pustulosa Dall, 1895: 677 , pl. 26, fig. 10.

Synonym:

Bucconia centa Okutani, 1987: 219-221 , text fig. 1.

TYPE MATERIAL — S. pustulosa : holotype USNM 107012 . — B. centa : holotype NSMT Mo 64230 .

TYPE LOCALITY. — S. pustulosa : Hawaii , 539 m . — B. centa : Koshiki-jima Island , Japan, 400-500 m.

MATERIAL EXAMINED. — Coral Sea. MUSORSTOM 5: stn 272, 650 m, 9 dd; stn DW 48 , 23°00’S, 167°29’E, 775 m, 10 dd; stn Banc Capel , 24°41’S, 159°43’E, 500-540 m, 1 lv (Figs 49 C, D, DW 51 , 23°05’S, 167°45’E, 680-700 m, 1 dd; stn DW 53 , 23°09’S, 50 A); stn 340, Chesterfield Islands, 19°49’S, 158°41’E, 675-680 167°43’E, 975-1005 m, 1 dd; stn CP 61 , 24°11’S, 167°32’E, 1070 m, 4 dd; stn 341, 19°46’S, 158°43’E, 620-630 m, 2 dd; stn 358, m, 1 dd; stn DW 77 , 22°15’S, 167°15’E, 440 m, 83 dd . — MU- 19°39’S, 158°47’E, 680-700 m, 2 dd; stn 360, 19°37’S, 158°46’E, SORSTOM 4: stn DW 223 , 22°57’S, 167°30’E, 545-569 m, 3 dd . — 630 m, 3 dd; stn 380, 19°38’S, 158°44’E, 555-570 m, 2 dd; stn SMIB 2 : stn DW 21 , 22°40’S, 167°41’E, 460-500 m, 1 dd; stn DW 381 , 19°38’S, 158°47’E, 620 m, 1 dd; stn 382, 19°37’S, 158°43’E, 23, 22°31’S, 167°37’E, 410-420 m, 1 dd . — CHALCAL 2: stn DW 580 m, 2 dd; stn 388, 20°45’S, 160°54’E, 500-510 m, 1 dd. 75, 24°39’S, 168°40’E, 600 m, 1 dd . — SMIB 3 : stn DW 1 , 24°56’S, North of New Caledonia. LAGON: stn 492, Lagon Nord , 18°58’S, 168°22’E, 520 m, 2 dd; stn DW 21 , 22°59’S, 167°19’E, 525 m, 1 163°14’E, 440 m, 1 dd; stn 493, 19°01’S, 163°09’E, 535 m, 1 dd. dd . — SMIB 8 : stn DW 146-147 , Mont B, Banc Eponge, 24°55’S, — MUSORSTOM 4: stn DW 156 , 18°54’S, 163°19’E, 525 m, 80 dd; 168°22’E, 508-532 m, 5 dd; stn DW 149 , 24°55’S, 168°22’E, stn DW 159 , 18°46’S, 163°16’E, 585 m, 9 dd; stn DW 161 , 18°39’S, 508-510 m, 3 dd . — BATHUS 3 : stn DW 807 , Banc Jumeau ou- 163°11’E, 550 m, 8 dd; stn DW 162 , 18°35’S, 163°10’E, 525 m, est, 23°40’S, 167°59’E, 420-438 m, 1 dd; stn DW 809 , 23°39’S, 3 dd; stn CP 169 , 18°54’S, 163°11’E, 590 m, 3 dd; stn DW 197 , 167°59’E, 650-730 m, 1 dd; stn CP 822 , 23°20’S, 167°57’E, 950- 18°51’S, 163°21’E, 550 m, 5 dd . — BATHUS 4 : stn CP 912 , Grand 980 m, 2 dd; stn DW 824 , 23°19’S, 168°00’E, 601-608 m, 5 dd .

Passage , 18°56’S, 163°08’E, 690-702 m, 2 dd; stn CP 914 , 18°49’S, Loyalty Ridge. BIOCAL: stn DW 08 , 20°34’S, 166°54’E, 435 m, 163°15’E, 600-616 m, 14 dd; stn DW 915 , 18°51’S, 163°17’E, 575- 11 dd; stn DW 79 , 20°40’S, 166°52’E, 1320-1380 m, 1 dd; stn 580 m, 2 dd; stn DW 916 , 18°53’S, 163°20’E, 516-570 m, 3 dd; DW 83 , 20°35’S, 166°54’E, 460 m, 1 dd . — BIOGEOCAL: stn stn DW 917 , 18°47’S, 163°14’E, 397-400 m, 3 dd; stn DW 918 , KG 219, 22°39’S, 166°34’E, 570 m, 6 dd; stn DW 291 , 20°34’S, 18°49’S, 163°16’E, 613-647 m, 9 dd (Fig. 48 F); stn CP 921 , 18°47’S, 166°54’E, 510-520 m, 4 dd; stn DW 308 , 20°40’S, 166°58’E, 163°17’E, 610-613 m, 1 lv; stn DW 923 , 18°52’S, 163°24’E, 470- 510- 590 m, 5 dd . — CALSUB: PL 15 , between Lifou and Uvea, 502 m, 4 dd; stn DW 929 , 18°52’S, 163°23’E, 502-516 m, 6 dd. 20°37’S, 166°58’E, 538 m, 2 dd . — MUSORSTOM 6: stn DW New Caledonia proper. BATHUS 2 : stn DW 722 , Ile des Pins , 410, 20°38’S, 167°07’E, 490 m, 1 dd; stn DW 459 , 21°01’S, 22°55’S, 167°21’E, 618-620 m, 1 dd; stn DW 733 , Passe de 167°31’E, 425 m, 1 dd; stn CP 465 , 21°04’S, 167°32’E, 480 m, 1 Kouaré, 22°55’S, 166°49’E, 520 m, 2 dd; stn CP 738 , 23°02’S, dd; stn DW 468 , 21°06’S, 167°33’E, 600 m, 15 dd; stn DW 483 , 166°57’E, 558-647 m, 5 dd; stn CP 760 , Passe de Dumbéa, 21°20’S, 167°48’E, 600 m, 3 dd; stn DW 487 , 21°23’S, 167°46’E, 22°19’S, 166°11’E, 455 m, 1 dd & 1 lv; stn CP 761 , 22°19’S, 500 m, 2 dd; stn DW 488 , 20°49’S, 167°06’E, 800 m, 1 dd . — 166°11’E, 490-500 m, 16 dd ( Figs 48 C, D, G). BATHUS 3 : stn DW 783 , Mont J, 23°57’S, 169°47’E, 614-617 m, Norfolk Ridge. VAUBAN: stn 22, 22°59’S, 167°17’E, 540-545 m, 1 dd; stn DW 784 , 23°56’S, 169°46’E, 611-615 m, 1 dd, stn DW 3 dd; stn 40, 22°30’S, 166°24’E, 250-350 m, 2 dd . — BIOCAL: stn 786, 23°54’S, 169°49’E, 699-715 m, 2 dd; stn DW 790 , 23°49’S, DW 33 , 23°10’S, 167°10’E, 675-680 m, 1 dd, 1 lv; stn DW 39 , 169°48’E, 685-715 m, 4 dd; stn DW 792 , 23°46’S, 169°49’E, 22°55’S, 167°23’E, 650 m, 1 dd; stn CP 40 , 22°55’S, 167°24’E, 730-735 m, 1 dd; stn DW 794 , 23°48’S, 169°49’E, 751-755 m ,

1 dd; stn DW 795, 23°47’S, 169°49’E, 735-755 m, 1 dd. 174°19’W, 320 m, 1 dd; stn DW 601, 13°19’S, 176°17’W, 350 New Hebrides Arc. VOLSMAR: stn DW 30, Hunter and Mat- m, 12 dd; stn DW 604, 13°21’S, 176°08’W, 415-420 m, 13 dd.

thew Islands, 22°17’S, 171°18’E, 450-550 m, 1 dd; stn DW 51, Tonga. BORDAU 2: stn DW 1508, Tongatapu, 21°02’S, 175°19’W, Monts Gemini, 20°59’S, 170°03’E, 450 m, 7 dd. 555-581 m, 3 dd; stn DW 1509, 21°05’S, 175°22’W, 456-510 m, Vanuatu. MUSORSTOM 8: stn DW 972, 19°22’S, 169°28’E, 41 dd; stn DW 1518, Eua, 21°21’S, 175°07’W, 336-347 m, 3 dd; 487-507 m, 50 dd, 1 lv; stn DW 977, 19°25’S, 169°29’E, 410-505 stn DW 1527, 21°16’S, 174°59’W, 483-509 m, 1 dd; stn DW 1531, m, 1 dd; stn DW 978, 19°23’S, 169°27’E, 408-413 m, 3 dd; stn 21°12’S, 174°56’W, 970-983 m, 27 dd; stn DW 1538, 21°39’S, DW 1045, 16°54’S, 168°20’E, 459-488 m, 8 dd; stn DW 1046, 175°19’W, 471-508 m, 6 dd; stn DW 1543, SW of Tongatapu, 16°54’S, 168°11’E, 461-480 m, 3 dd; stn DW 1048, 16°40’S, 21°16’S, 175°18’W, 427-436 m, 9 dd; stn DW 1544, 21°18’S, 168°04’E, 450-489 m, 1 dd; stn DW 1065, 16°16’S, 167°21’E, 175°18’W, 441-443 m, 3 dd; stn DW 1547, 21°24’S, 175°18’W, 488- 360-419 m, 1 dd; stn DW 1072, 15°40’S, 167°20’E, 622-625 m, 491 m, 1 dd; stn DW 1548, 20°38’S, 175°03’W, 476-478 m, 16 dd; 1 dd; stn DW 1113, 14°53’S, 167°06’E, 700-736 m, 2 dd. stn DW 1549, S of Nomuka Islands, 20°38’S, 175°00’W, 500 m, 58 Fiji. BORDAU 1: stn CP 1393, 16°45’S, 179°59’E, 426-487 m, dd; stn DW 1551, 20°38’S, 175°01’W, 511 m, 9 dd; stn DW 1552, 2 dd; stn CP 1408, 16°02’S, 179°30’W, 550-561 m, 3 dd; stn 20°38’S, 174°58’W, 491-500 m, 76 dd; stn DW 1553, 20°42’S, CP 1409, 16°02’S, 179°30’W, 557-558 m, 1 dd; stn CP 1420, 174°54’W, 650-676 m, 6 dd; stn DW 1554, 20°38’S, 174°58’W, 17°05’S, 178°57’W, 550-687 m, 1 dd; stn DW 1432, 17°20’S, 482-498 m, 12 dd; stn DW 1555, Channel N of Nomuka, 20°11’S, 178°44’W, 477-493 m, 17 dd; stn CP 1433, 17°20’S, 178°43’W, 174°45’W, 591 m, 7 dd; stn DW 1556, 20°11’S, 174°45’W, 589-591 488-500 m, 1 dd; stn CP 1459, 17°18’S, 179°33’W, 820-863 m, m, 1 dd; stn CP 1558, 20°10’S, 174°43’W, 580-593 m, 3 dd; stn 2 dd; stn CP 1479, 20°58’S, 178°45’W, 450-460 m, 1 dd; stn DW 1584, Vava‘u Islands, 18°36’S, 174°01’W, 439 m, 1 dd; stn DW DW 1485, 19°03’S, 178°30’W, 700-707 m, 4 dd; stn DW 1486, 1585, 18°33’S, 173°57’W, 578 m, 64 dd; stn DW 1586, 18°34’S, 19°01’S, 178°26’W, 395-540 m, 31 dd; stn DW 1488, 19°01’S, 173°55’W, 440-487 m, 5 dd; stn DW 1588, 18°40’S, 173°52’W, 178°25’W, 500-516 m, 85 dd; stn DW 1492, 18°43’S, 178°23’W, 630-710 m, 11 dd; stn DW 1589, 18°39’S, 173°54’W, 281 m, 1 430-450 m, 1 dd; stn DW 1493, 18°43’S, 178°24’W, 429-440 m, dd; stn DW 1 597, centre of Ha‘apai Islands, 20°40’S, 174°55’W, 1 dd; stn DW 1496, 18°43’S, 178°23’W, 392-407 m, 1 dd. 598-610 m, 20 dd; stn DW 1611, 23°00’S, 175°47’W, 278-323 m, 1 Wallis and Futuna. MUSORSTOM 7: stn DW 507, Futuna Is- dd; stn DW 1614, Seamount, 23°02’S, 175°51’W, 429-549 m, 2 dd; land, 14°20’S, 178°07’W, 419-425 m, 1 dd; stn DW 523, Wal- stn DW 1615, 23°03’S, 175°53’W, 482-504 m, 6 dd; stn DW 1632, lis Island, 13°12’S, 176°16’W, 455-515 m, 9 dd; stn DW 526, 22°01’S, 175°42’W, 613-618 m, 3 dd (Figs 48 A, B, E); stn CP 1640, 13°13’S, 176°15’W, 355-360 m, 1 dd; stn DW 585, 13°10’S, NW of Tongatapu, 21°09’S, 175°24’W, 564-569 m, 3 dd; stn CP 176°13’W, 415-475 m, 2 dd; stn DW 591, Field Bank, 12°31’S, 1644, 21°05’S, 175°23’W, 501 m, 1 dd.

DISTRIBUTION. — Originally described from Hawaii , in 539 m. Recorded from Koshiki-jima Island , Japan, in 400- 500 m, as Bucconia centa Okutani, 1987 . Included herein are the first records from the Coral Sea , Fiji, the Hunter and Matthew Islands, New Caledonia, Tonga, Vanuatu and Wallis and Futuna (Fig. 51), in 281-1320 m, live in 455- 675 m.

DESCRIPTION. — Shell morphology. Length 38 mm, width 27 mm (largest specimen examined). Shell solid, oval, with convex sides (Figs 48A, 48E, F). Only 1 whorl visible in large and medium-sized shells (c. 10 mm or longer), forming the entire shell (Fig. 48B). In smaller shells (c. 5-10 mm long) the protoconch is visible partially embedded within the outer whorl, and in smaller specimens (less than 5 mm long) the protoconch is completely visible (Fig. 48D). The protoconch is globose, 0.8 whorl and about 300 Μm in diameter. Apex rounded or slightly pointed, not umbilicate, with the aperture lip conspicuously rising from the left side in the larger specimens (15 mm or longer), forming a short wing (Figs 48A, E, F). In smaller specimens the outer lip rises slightly over the apex or ends at the same level (Fig. 48G). Anterior end of the shell rounded. Aperture as long as the shell, wider anteriorly and narrower posteriorly. Columellar margin conspicuously thickened, with a large callus composed of numerous tubercles. The callus runs from the end of the most anterior 1/2 of the aperture to the beginning of the posterior 1/3 of the aperture, and has 2 thicker areas at the beginning and at the end. Sculpture of a number of spiral lines composed of overlapping punctuations (Fig. 48C). These lines are more densely arranged near the apex. Colour uniform cream to light brown.

Anatomy. The digestive system contains 3 smooth gizzard plates, 2 of which are large and oval, whereas the third is elongate (Fig. 49D). The radular formula is 14 x 1.0. 1 in a specimen from the Coral Sea (MUSORSTOM 5 stn 272)

FIG. 48. Shell morphology of Sabatia pustulosa Dall, 1895 . A, (27 mm), ventral view, from Tonga, BORDAU 2 stn DW 1632; B, same shell, posterior view; C, sculpture, New Caledonia,BATHUS 2 stn CP 761, scale bar = 100 Μm; D, protoconch, New Caledonia, BATHUS 2 stn CP 761, scale bar = 300 Μm; E, (21 mm), ventral view, Tonga, BORDAU 2 stn DW 1632; F, (18 mm), ventral view, New Caledonia, BATHUS 4 stn DW 918; G, juvenile shell, (2 mm), ventral view, New Caledonia, BATHUS 2 stn CP 761.

FIG. 49. Gizzard plates and radulae of species of Sabatia Bellardi, 1876 . A, B, Sabatia nivea (Watson, 1883) . A, radula, Vanuatu, MUSORSTOM 8 stn CP 1111, scale bar = 200 Μm; B, same specimen, gizzard plates, scale bar = 2 mm. C, D, Sabatia pustulosa Dall, 1895 . C, radula, Coral, MUSORSTOM 5 stn 272, scale bar = 100 Μm; D, same specimen, gizzard plates, scale bar = 2 mm. E, Sabatia supracancellata (Schepman,1913) , radula,KARUBAR stn CP 69, scale bar = 20 Μm. F, Sabatia pyriformis n. sp., radula of paratype MNHN 20385, New Caledonia, BATHUS 1 stn DE 696, scale bar = 20 Μm.

REMARKS. — Dall (1895) described Sabatia pustulosa from Hawaii based on a 33 mm long shell. This species was characterized by having a solid shell with a granular callus and a sculpture consisting of spiral lines composed of overlapping punctuations. The material here examined matches the original description and illustration of S. pustulosa .

Bucconia centa was described by Okutani (1987) based on 2 large specimens (40 mm long) collected from Koshikijima Island, Japan. The shell of this species is very similar to the material here examined and the original description of Sabatia pustulosa , and there is no doubt that they are conspecific.

Sabatia pustulosa appears to be widespread in the central and western Pacific, and it is the most common deepwater species of opisthobranch in the areas surveyed for the present study.