Leptochiton habei Saito, 1997

Sirenko, Boris, 2018, Taiwanese deep-water chitons (Mollusca: Polyplacophora) and survey of chiton fauna of Taiwan, Zootaxa 4422 (3), pp. 301-344: 314-316

publication ID

https://doi.org/10.11646/zootaxa.4422.3.1

publication LSID

lsid:zoobank.org:pub:225024A4-A643-4F17-9A8D-4905DC236330

persistent identifier

http://treatment.plazi.org/id/985187DA-FFBB-FFFB-FF34-2D00FEF2FCC8

treatment provided by

Plazi

scientific name

Leptochiton habei Saito, 1997
status

 

Leptochiton habei Saito, 1997 

( Figs 13–15View FIGURE 13View FIGURE 14View FIGURE 15)

Leptосhitоn habei Sаito 1997  : 44 –46, text figs 1D View Figure , 7 View Figure ; pl. 2, fig. 1 View Figure ; Sаito 2000: 7; Sirenko 2001: 41 –43, figs 1–15View FIGURE 1View FIGURE 2View FIGURE 3View FIGURE 4View FIGURE 5View FIGURE 6View FIGURE 7View FIGURE 8View FIGURE 9View FIGURE 10View FIGURE 11View FIGURE 12View FIGURE 13View FIGURE 14View FIGURE 15, 162–163; 2004: 114–115, tаb. 1; Sigwаrt & Sirenko 2012: 11.

Type material. Holotype ( NMNSAbout NMNS 70655) and paratypes ( NMNSAbout NMNS 70653, 70654, 70656, 70771).

Type locality. Suruga Bay, off Kogane-zaki , Izu Peninsula, Japan, 200–300 m. 

Material examined. Taiwan, Bashi channel N/O Fishery Researcher 1,” TAIWAN 2000”, stn CP38, 21°32.1’N, 120°48.1’E, 1314–1317 m, 10 spms, BL 3.0–5.0 mm, 01.08.2000; stn CP58, 24°35.1’N, 122°05.8’E, 221 m, 2 spms, BL 4.5–5.0 mm, 04.08.2000; NE coast of Taiwan, off Tashi, Fishing Boat Chung Tung Long N26, stn CP76, 24°56.5’N, 122°01.5’E, 115–170 m, 1 spm, BL 4.5–5.0 mm, 07.05.2001; stn CP95, 24°55.8’N, 122°05.7’E, 269–360 m, 2 spms, BL 5.0– 7.5 mm, 18.05.2001.

Distribution. Known from Japan (200–300 m: Saito 1997), Vanuatu (765–780 m: Sirenko 2001), Solomon Islands (200–350 m: Sigwart & Sirenko 2012) and now near Taiwan (170–1314 m). Found living and feeding on sunken terrestrial plant remains. The present report from off Taiwan extends the distribution and depth of this species considerably.

Remarks. The Taiwan specimens are very similar to Vanuatu specimens ( Sirenko 2001) and differ from the holotype of L. habei  from Suruga Bay by (1) distinct granules on the tegmentum of the head valve, the lateral area of intermediate valves and the postmucronal area of the tail valve, and (2) the presence of smooth sensitive needles at the suture and at the margin. The disarticulated specimen from Taiwan (stn CP76, BL 7.0 mm) has five almost equal gills on each side; its radula is 2.4 mm long with 32 transverse rows of mature teeth. Each suture has up to seven smooth delicate needles. There are seven (rarely eight or nine) aesthetes pores in each granule on the tegmentum.

NMNS

National Museum of Natural Science

Kingdom

Animalia

Phylum

Mollusca

Class

Polyplacophora

Order

Neoloricata

Family

Leptochitonidae

Genus

Leptochiton

Loc

Leptochiton habei Saito, 1997

Sirenko, Boris 2018

2018
Loc

habei Sаito 1997

: 44 : 7 : 41 : 11