Caecum sepimentum de Folin, 1868

Vannozzi, Angelo, Pizzini, Mauro & Raines, Bret, 2015, Revision of South African Caecidae (Mollusca: Gastropoda), African Invertebrates 56 (1), pp. 99-99 : 117-118

Caecum sepimentum de Folin, 1868

Figs 15 , 25D

Caecum sepimentum de Folin, 1868: 84 , pl. 6, fig. 7.

Caecum sepimentum var. arcuata de Folin, 1880: 809 .

Caecum lilianum Hedley, 1903: 603 , pl. 29, fig. 7.

Caecum maculata [sic] Habe, 1963: 236, fig. 2.

Caecum berberense Ladd, 1972: 22 , 23, pl. 5, figs 11, 12.

Caecum septimentum [sic] Lightfoot, 1992: 1, 4, figs 2, 3.

Caecum gracile Sasaki, 2008: 169 , fig. 9E, F.

Caecum sepimentum: Albano & Pizzini 2011: 6–9 , fig. 4A–D.

Caecum sepimentum: Pizzini et al. 2013: 5–8 , figs 8A–D, F, G, 19K, 20A–D.

Type locality: Mauritius I.

Type material examined: Lectotype ( MNHN-IM- 2000 - 24907 ) selected by Pizzini et al. (2013: 5, fig. 8D).

Material examined: SOUTH AFRICA: Eastern Cape: 1 sh, Mzamba, beachdrift, leg. R.Kilburn & D. Herbert 12–30.v.1986 ( NMSA A6285 ); KwaZulu-Natal: 5 lv and 12 sh, Aliwal Shoal ± - 16 m, hand-dredged sand ( NMSA S5943 ); 5 lv and 39 sh, Landers Reef , off Scottburgh area , - 33 m, SCUBA ( JPM); 3 lv and 135 sh, Aliwal Shoal , off Umkomaas area , - 27 m, SCUBA, i.1988 ( JPM); 7 sh, Landers Reef , off Scottburgh area , - 45 m, SCUBA, iv.1988 ( JPM); 1 sh, Mission Rocks , N of St. Lucia, v.1989 ( JPM); 5 lv and 19 sh, Aliwal Shoal , off Scottburgh , - 25–27 m, sand and reef debris ( NMSA S7186 ); 34 lv and 55 sh, Aliwal Shoal , off Scottburgh , - 14 m, underwater pump ( NMSA S8627 ); 6 lv and 1 sh, Aliwal Shoal , Cracker Reef , - 23 m ( NMSA E7168 ); 3 sh, Park Rynie , - 50 m, coarse sand, 2–25.xi.1976, ex C.S.I.R. water Res. 1977 ( NMSA B240 ); 2 lv and 9 sh, Aliwal Shoal , off Scottburgh , - 10–20 m, sand ( NMSA S6822 ); 3 lv and 5 sh (1 juv), Landers Reef (off Park Rynie), - 30 m, slightly muddy sand ( NMSA E1671 ); 1 sh, Landers Reef , - 20–30 m, sorted from stone washings ( NMSA E2317 ); 7 lv and 5 sh, Aliwal Shoal , - 9–15 m ( NMSA E6165 ); 7 lv (1 juv) and 5 sh, Aliwal Shoal , off Scottburgh , - 10 m, sand and reef debris ( NMSA S8247 ); 11 sh, off Sodwana Bay, sediment at base of drop-off in canyon, - 46 m, Marine Geoscience Unit, 7.xii.1992 ( NMSA V2626 ); 8 lv and 4 sh, Kosi Bay , main reef, 1–4 km S of estuary mouth, - 23–24 m, underwater pump ( NMSA S2918 ); 16 lv and 47 sh, Leadsman Shoal , outer portion - 24–26 m, sorted from stone washings ( NMSA E2677 ); 2 lv, Leadsman Shoal , raggie reef, - 8–14 m, a mixed algal and coral reef, 1–2 km N of Leven Point, sorted from stone washings ( NMSA E2725 ); 3 lv and 9 sh, Leadsman Shoal , outer portion, - 25–28 m ( NMSA E6929 ); 2 lv, Leadsman Shoal , - 15 m, scrapings + broken down coral rubble ( NMSA E2273 ); 1 lv and 8 sh, Stn ZB7, off Boteler Point (27°00.5'S 32°54.7'E), - 50 m, coral rubble, dead Lithothamnium, R.V. Meiring Naudé , 6.6.1987 ( NMSA E1588 ); 1 sh, Sodwana Bay , two-mile reef (outer edge), sorted from stone washings, ­ 15–17 m ( NMSA D5304 ); 5 sh, Stn ZA21, SE of Kosi R. mouth (26°55.2'S 32°55.0'E), ­ 50 m, fine sand, dredged NMDP, 8.vi.1987 ( NMSA E1516 ); 1 lv and 16 sh, between Bhanga Neck and Kosi Bay, reef off marker, 13 km North, - 13 m, hand-dredged sand ( NMSA S3118 ); 1 sh, Stn ZM7, off Cape Vidal (29° 07.1S 32° 36.6'E), - 145 m, medium sand, dredged, NMDP, 10.vi.1988 ( NMSA E7550 ); 1 sh, Stn ZF8, off Hully Point (27°.4'S 32°46.4'E), ­ 40 m, fine sand, dredged, NMDP, 5.vi.1987 ( NMSA E1658 ); 4 sh (worn), Stn ZK2, off Gipsy Hill (27°48.8'S 32°38.4'E), - 50 m, dredged, NMDP, 8.vi.1988 ( NMSA 4184 ); 1 sh (worn), Stn ZA19, off Kosi estuary (26°56.7'S 32°54.7'E), - 50 m, coarse sand, shells, dredged, NMDP, 8.vi.1987 ( NMSA E1630 ); 22 sh (worn), Stn ZO4, coarse sand with mud, dredged, NMDP, 12.vi.1988 ( NMSA E5197 ); 1 lv and 2 sh, Sodwana Bay , two-mile reef, sorted from stone washings, - 10–15 m ( NMSA E769 ); 2 lv and 4 sh, Kosi Bay , main reef, 1–4 km S of estuary mouth, - 20 m, underwater pump ( NMSA S2526 ); 3 lv, off Kosi Bay , main reef, 1–2 km S of estuary, sorted from stone washings, - 9–17 m ( NMSA D9833 ); 1 sh, off Kosi Bay , main reef, 1–4 km S of estuary, - 9–17 m ( NMSA D9267 ); 1 sh, Stn ZN7, S.E. of Mission Rocks (28°17.5'S 32°34.2'E), - 100 m, medium sand, dredged, NMDP, 11vi.1988 ( NMSA E5191 ); 2 sh (worn), Stn ZK4, NE of Gipsy Hill (27°45.2'S 32°39.8'E), - 110 m, sponge, stones, dredged, NMDP, 8.vi.1988 ( NMSA E5204 ); 14 sh, Stn ZB 5, off Boteler Point (27°00.0'S 32°55.2'E), - 70 m, coral rubble, dredged, NMDP, 6.vi.1987 ( NMSA E1566 ); 2 lv and 21 sh, Stn ZN1, SE of Mission Rocks (28°17.5'S 32°32.6'E), - 50 m, old coral rubble, Lithothamnium , dredged, NMDP, 10.vi.1988 ( NMSA E6252 ); 2 sh, Stn ZK1, off Gipsy Hill (27°49.7'S 32°38.2'E), ­ 47–50 m, fine sand, dredged, NMDP, 8.vi.1988 ( NMSA E5663 ); 2 lv and 1 sh, between Bhanga Neck and Kosi Bay, reef off marker 13 North , - 8 m, underwater pump ( NMSA S2738 ); 2 lv and 1 sh, Leadsman Shoal, main portion of coral reef, - 7–11 m ( NMSA E6774 ); 12 lv and 11 sh, Kosi Bay , main reef, 1–4 km S of estuary mouth, - 20–22 m, underwater pump ( NMSA S2010 ); 14 sh, Stn ZE2 off Rock I. (27°17.2'S 32°48.0'E), - 62 m, sandstone, coral, marine growths, dredged, NMDP, 5.vi.1987 ( NMSA E1542 ); 1 sh, Stn ZN1, SE of Mission Rocks (28°17.5'S 32°32.6'E), - 50 m, old coral rubble, Lithothamnium , dredged, NMDP, 10.vi.1988 ( NMSA E7493 ); 46 sh, Stn ZK3, off Gipsy Hill (27°47.4'S 32°38.9'E), - 65–70 m, broken shell, dredged, NMDP, 8.vi.1988 ( NMSA E5893 ); 12 lv and 19 sh, Kosi Bay , main reef, 1–4 km S of estuary mouth, - 18 m underwater pump ( NMSA S4252 ); 2 sh, Stn ZK6, off Gipsy Hill (27°48.9'S 32°38.4'E), ­ 50 m, fine sand, dredged, NMDP, 8.vi.1988 ( NMSA E7497 ); 7 sh, Stn Zl5, NE of Leven Point (27°55.0'S 32°38.8'E), - 250 m, coarse sand, dredged, NMDP, 9.vi.1988 ( NMSA E5883 ); 1 sh, Stn ZM9, off Cape Vidal (28°08.3'S 32°36.9'E), - 200 m, sponge rubble, dredged, NMDP, 11.vi.1988 ( NMSA E5887 ); 1 sh, off Kosi Bay , main reef 1–2 km S of estuary, sorted from stone washings, - 9–17 m ( NMSA D9892 ); 1 sh, Leadsman Shoal, Raggie Reef , - 8–12 m, mixed algal and coral reef, 1–2 km N of Leven Point ( NMSA E6814 ); 4 sh, off Richards bay , ­ 50 m, fine quartzite, broken sh, ex C.S.I.R. Water Research ( NMSA A6112 ); 1 sh, off Sodwana Bay , - 50 m, shell grit, ex C.S.I.R. Water Research ( NMSA A5087 ); 7 sh, off Kosi Bay , - 50 m, shell grit, ex C.S.I.R., 1975 Water Research ( NMSA A4963 ); 1 sh, off Durban Bluff , 10 km SE of Cooper Lighthouse, - 210 m, cone dredge, ex C.S.I.R., 1974 (Ecor 5) ( NMSA A2993 ); 26 sh, off Kosi Bay , - 100 m, ex C.S.I.R. Water Research 1977 ( NMSA A5898 ); 20 sh, off Sodwana Bay , - 100 m, ex C.S.I.R., 1976, ( NMSA A5553 ); 3 sh, off Kosi Bay , - 50 m, shell grit, ex C.S.I.R. Water Research ( NMSA A5964 ).

Doubtful: SOUTH AFRICA: Eastern Cape: 1 sh (juv), Mzamba , beachdrift, leg. R. Kilburn & D. Herbert 12–30.v.1986 ( NMSA W9680 ) ; 3 sh, Mzamba , beachdrift, leg. R. Kilburn & D. Herbert 12–30.v.1986 ( NMSA D3021 ) ; 1 sh, Mtentu R. mouth, iv.1982 ( JPM 2414 ) ; KwaZulu-Natal: 1 sh (larval), Landers Reef, off Scottburgh Area , - 45 m, SCUBA, iv.1988 ( JPM) ; 2 sh (worn), T. O. Strand , 2 km N of Port Edward ( NMSA E1664 ) .

Additional material examined: RÉUNION: 10 lv and 3 sh, Cap La Houssaye , dived, - 8–17 m, varied bottom ( NMSA K5444 ) ; 46 lv and 25 sh, Cap La Houssaye , - 6–12 m ( NMSA) ; 2 sh, Cap de La Réunion ( MP) ; 2 sh, Réunion Is. ( MP) ; TANZANIA: Zanzibar: 33 sh, Uroa ( MP) ; KENYA: 3 sh, Kilifi, lagoon inshore of coral reef, sand from base of coral outcrops, - 4 m ( NMSA K7997 ) ; SUDAN: Red Sea: 57 sh, Sanghaneb Reef , leg. M. Oliverio 6.ii.1998 ( MP) ; 6 sh, leg. M. Oliverio 4.ii.1992 ( MP) ; 23 sh (2 larval), Sha’ab Rumi , leg. M. Oliverio 4.ii.1992 ( MP) ; EGYPT: Red Sea: 47 sh, Abu Rhamada, Hurghada , leg. Liverani xi.1991 ( MP) ; 2 dd, Sinai, leg. I. Nofroni; JORDAN: 1 sh (juv), Aqaba, leg. Liverani iv.1993 ; MAURITIUS: 3 sh Pointe Radeau , S of Roches Noires, shell debris, near reef gap ( NMSA K9511 ) ; 2 sh, Riambel Lagoon , beach drift ( NMSA K9821 ) ; 8 sh, Gris Gris , debris on surf beach opposite reef-break ( NMSA K9186 ) ; INDIA: 1 sh, Andaman Is. ( MP) ; JAPAN: 3dd, Amami I. ( MP) ; HAWAII: 5 sh, Pali Coast, Maui I. ( MP) ; 1 lv and 2 sh, SE Mokapu Point, Oahu I. ( MP) ; 1 sh, Lanai I. ( MP) ; AUSTRALIA: Queensland: 31 dd, N of Green I., E of Cairns ( MP) .

Distribution: Indo­West Pacific; this species is very common on the eastern coast of South Africa ( Fig. 15 ).

Remarks: South African specimens show no relevant differences with respect to the specimens found all over the Indo­West Pacific.

Figures

Fig. 15. Distribution map of Caecum cf. oahuense Pilsbry, 1921 (■), C. sepimentum de Folin, 1868 (▲) and C. lindae sp. n. (▼).

Fig. 25. South and western African Caecum and Parastrophia species: (A) P. avaricosa sp. n., holotype, Mzamba (NMSA E1665/T3354); (B, C) P.ornata sp. n., Mzamba,near Natal border — (B) holotype (NMSA W9677/T3379), (C) paratype (JPM 2119); (D) C. sepimentum de Folin, 1868, Kosi Bay (NMSA S2010); (E) C. cf. oahuense Pilsbry, 1921, Aliwal Shoal, off Umkomaas area (JPM); (F) Caecum cf. gulosum Hedley, 1899, Kosi Bay (NMSA S2869); (G, H) C. succineum de Folin, 1880 — (G) between Bhanga Nek andKosi Bay (NMSAS1586), (H)Aliwal Shoal, off Scottburgh (NMSA W9684); (I) C. cf. glabrum (Montagu, 1803), Knysna, Gericke Point, Sedgefield (NMSA W9658); (J) C. glabrum (Montagu, 1803), Rabat, Morocco (MP); (K) C.lindae sp. n., holotype, Cape Morgan Lighthouse (NMSA W9682/T3924); (L, M) C. cf. musorstomi Pizzini, Raines & Vannozzi, 2013, Landers reef (JPM); (N, O) C.austrafricanum sp.n., paratypes,Walker’s Point,W of Knysna (NMSA W9656/T3351);(P) C.knysnaense sp.n., paratype,Knysna,Gericke Point,Sedgefield (NMSAW9673/ T3364); (Q) C. intortum sp. n., paratype, Walker’s Point, W of Knysna (NMSA W9669/T3360); (R) C. macrum van der Linden & Moolenbeek, 2000, Charbonnier, Senegal (MP); (S, T) C. crassum de Folin, 1870, Gabon (MP): (S) adult; (T) juvenile. Scale bar = 1 mm.