Leptochiton medinae Plate, 1899,

Sirenko, Boris, 2015, Shallow and deep-sea chitons of the genus Leptochiton Gray, 1847 (Mollusca: Polyplacophora: Lepidopleurida) from Peruvian and Chilean waters, Zootaxa 4033 (2), pp. 151-202: 159-160

publication ID

http://dx.doi.org/10.11646/zootaxa.4033.2.1

publication LSID

lsid:zoobank.org:pub:46694533-415A-4469-866E-B968502198A7

persistent identifier

http://treatment.plazi.org/id/038887DA-BA1E-1C3F-FF48-10DDFA96FE7B

treatment provided by

Plazi

scientific name

Leptochiton medinae Plate, 1899
status

 

Leptochiton medinae Plate, 1899 

( Figs 5–7View FIGURE 5View FIGURE 6View FIGURE 7)

Leptochiton medinae Plate 1899: 82  –89; pl. 5, figs. 204–206; Kaas & Van Belle 1985: 80 –83; Sirenko 2006: 82; Schwabe & Sellanes 2010: 34 –36, Figs 1View FIGURE 1 K, 5 E, F, 6, 7A, B

Type. Lectotype ( ZMB /Moll- 102.045), designated by Schwabe & Sellanes (2010) (not examined).

Type locality. Chile, Magellan Strait, off Punta Arenas, 53 º09’S 70 º 55 ’W, 15– 18 m.

Material examined. Magellan Strait and Beagle Channel. RV Victor Hensen, st. 881, AGT, 53 °42.0’S, 70 ° 57.4 ’W, 56 m, 1 spm, 26.10. 1994, leg. K. Linse; st. 884, EBS, 53 ° 42.6 ’S, 70 ° 57.5 ’W, 51 m, 6 spms, 26.10. 1994, leg. K. Linse; st. 949, AGT, 53 ° 10.5 ’S, 70 ° 53.5 ’W, 24 m, 1 spm, 30.10. 1994, leg. K. Linse; st. 972, EBS, 53 ° 28.8 ’S, 70 ° 21.9 ’W, 92 m, 10 spms, 0 1.11. 1994, leg. K. Linse; st. 980, EBS, 53 ° 42.7 ’S, 70 ° 50.1 ’W, 552 m, 1 spm, 0 1.11. 1994, leg. K. Linse; st. 1040, EBS, 54 °51.0’S, 69 ° 55.7 ’W, 30 m, 6 spms, 0 4.11. 1994, leg. K. Linse; st. 1247, 54° 59.43 ’S, 69 °04.64’W, 100 m, 5 spms, 19.11. 1994, leg. A. Brandt; st. 1316, AGT, 54 °054’S, 70 ° 58.3 ’W, 360 m, 1 spm, 24.11. 1994, leg. K. Linse; Isla de los Estados. RV Eltanin, cruise 5, st. 453, 54° 27 ’– 54 ° 24 ’S, 66 ° 12 ’– 66 ° 17 ’W, 3 spms, 21.01.1963; RV Hero  , cruise 712, st. 668, 54° 46.25 ’S, 64 °02.85’W, 23 m, 3 spms, 15.05.1971; Atlantic ocean, Argentina. RV Hero  , st. G, 42 °54.0’S, 64 ° 23 ’W, 20–50 m, 16 spms, 18.07. 1978.

Distribution. On both sides of southern South America from Lat. 42 ° south to Cape Horn ( Kaas & Van Belle, 1985; Schwabe & Sellanes, 2010), at depth 8– 552 m.

Remarks. Schwabe & Sellanes (2010) erroneously reported an unicuspidate head of the second (major) lateral tooth of the radula in L. medinae  . Kaas & Van Belle (1985) and the present data ( Fig. 7View FIGURE 7) show a bicuspidate head of the major lateral tooth of the radula in L. medinae  . The specimen figured in Schwabe & Sellanes (2010, Fig. 5View FIGURE 5, E, F) apparently shows the anterior-most part of the radula with worn denticles of the relevant teeth. I observed that the anterior most parts of the radula in several species including L. medinae  , L. sykesi  , L. laurae  and others have unicuspidate head of the major lateral tooth because of the head was erased during process of feeding.

ZMB

Museum für Naturkunde Berlin (Zoological Collections)

Kingdom

Animalia

Phylum

Mollusca

Class

Polyplacophora

Order

Lepidopleurida

Family

Leptochitonidae

Genus

Leptochiton

Loc

Leptochiton medinae Plate, 1899

Sirenko, Boris 2015
2015
Loc

Leptochiton medinae

Schwabe 2010: 34
Sirenko 2006: 82
Kaas 1985: 80
Plate 1899: 82
1899