Loricella profundior ( Dell, 1956 )

Sirenko, Boris, 2021, Composition of the genus Loricella (Mollusca: Polyplacophora: Loricidae) and the description of two new species, Zootaxa 4981 (2), pp. 275-300 : 278-281

publication ID

https://doi.org/10.11646/zootaxa.4981.2.4

publication LSID

lsid:zoobank.org:pub:F3FD1EFA-2058-44B5-88EE-A82CCB968D21

DOI

https://doi.org/10.5281/zenodo.4923614

persistent identifier

https://treatment.plazi.org/id/82770F72-FF96-287D-2BE1-FF6975368D34

treatment provided by

Plazi

scientific name

Loricella profundior ( Dell, 1956 )
status

 

Loricella profundior ( Dell, 1956)

( Figs. 1 View FIGURE 1 , C, D, 2–7 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 View FIGURE 7 )

Paricoplax profundior Dell 1956: 157 , figs. 213–219; O’Neill 1987: 134; Xu 1990: 377.

Loricella profundior, Beu 1967: 478 ; Fitzgerald 1969: 23; Beu 1977: 42; Powell 1979: 25; Kaas 1990: 178 (in part); 1991: 22 (in part); Kaas et al. 2006: 67 (in part); Spencer et al. 2009: 197.

Loricella oviformis, Kaas 1985: 310 (in part, not Squamophora oviformis Nierstrasz, 1905 ).

Sinolorica profundior, Xu 1990: 377 .

Type material. Holotype ( NMNZ M972 ), not seen.

Type locality. New Zealand, Chatham Islands, off the Forty Fours , 238 m.

Material examined. Tonga Islands, Tongatapu, N/O “Alis”, BORDAU 2 stn CP1510, 21°05.5’S, 175°23’W, 461–497 m, 1 spm (MNHN-IM-2013-59980), BL 11.5 mm, 31.05.2000 GoogleMaps ; stn CP1545, 21°17’S, 175°17’W, 444–447 m, 1 spm (MNHN-IM-2013-59981), BL 9.0 mm, 05.06.2000 GoogleMaps ; stn DW1628, 23°22’S, 176°18’W, 400–416 m, 2 spms (MNHN-IM-2013-59982, MNHN-IM-2013-59983), BL 8.0–11.0 mm, 19.06.2000 GoogleMaps ; New Zealand, southern Kermadec Ridge , Rumble V volcano, RVTangaroa, 36°8.80’S, 178°12.20’E, 772–951 m, 1 spm ( NMNZ M.319774), BL 18.0 mm, 23.05.2001 GoogleMaps ; Chatham Rise, RVTangaroa, 42°35.15’S, 179°10.57’E, 602 m, 1 spm ( NMNZ M.183839), BL 11.5 mm, 29.12.2003 GoogleMaps .

Distribution. New Zealand (238–772 m: Dell 1956 and this study), Tonga (416–461: this study).

Remarks. Specimens from Tonga and New Zealand are very similar to the holotype (NMNZ M972) in shape and structure of the shell. Dorsal scales have grooves near the edge of the distal part. Aspecimen (NMNZ M.319774) from New Zealand (BL 18 mm) has a dorsal elevation of 0.27, slit formula 12/1/sinus + 8 obsolete, 18 gills on each side, and the nephridiopore and gonopore arranged between 4–5 and 5–6 gills accordingly counted from the last one. Aspecimen (MNHN-IM-2013-59983) from Tonga (BL 11 mm) has dorsal elevation of 0.31, slit formula 14/1 (rare 2)/sinus + 5 obsolete (valve II has two slits in one side), 16 gills in each side extending from valve IV to valve VII, nephridiopore and gonopore arranged between 4–5 and 5–6 gills accordingly counted from the last one, and a radula 1.6 mm long with 38 transverse rows of mature teeth.

L. profundior is very similar to L. scissurata , but differs from the latter in having grooves on the dorsal scales near the edge of the distal part (vs pits on the dorsal scales in L. scissurata ) and a shorter postmucronal area.

L. profundior differs from L. eernissei in having grooves on the dorsal scales near the edge of the distal part (vs smooth dorsal scales in L. eernissei )

NMNZ

Museum of New Zealand Te Papa Tongarewa

Kingdom

Animalia

Phylum

Mollusca

Class

Polyplacophora

Order

Chitonida

Family

Loricidae

Genus

Loricella

Loc

Loricella profundior ( Dell, 1956 )

Sirenko, Boris 2021
2021
Loc

Loricella oviformis, Kaas 1985: 310

Kaas, P. 1985: 310
1985
Loc

Loricella profundior, Beu 1967: 478

Spencer, H. G. & Marshall, B. A. & Willan, R. C. 2009: 197
Kaas, P. & Van Belle, R. A. & Strack, H. L. 2006: 67
Kaas, P. 1990: 178
Powell, A. W. B. 1979: 25
Beu, A. G. 1977: 42
Fitzgerald, M. L. 1969: 23
Beu, A. G. 1967: 478
1967
Loc

Paricoplax profundior

O'Neill, M. H. B. 1987: 134
Dell, R. K. 1956: 157
1956