Stenochiton nubilus ( Cochran, 1993 )

Sirenko, Boris, 2023, A small collection of rare and new chitons (Mollusca: Polyplacophora) from the Tasmanian Museum and Art Gallery, Zootaxa 5325 (3), pp. 359-392 : 384-386

publication ID

https://doi.org/ 10.11646/zootaxa.5325.3.3

publication LSID

lsid:zoobank.org:pub:A1FD8DA8-A72C-41B9-8FD7-E0DCE2A1D3BD

DOI

https://doi.org/10.5281/zenodo.8247090

persistent identifier

https://treatment.plazi.org/id/03CD7E00-6842-6967-44FE-6415FAD3E9A5

treatment provided by

Plazi

scientific name

Stenochiton nubilus ( Cochran, 1993 )
status

 

Stenochiton nubilus ( Cochran, 1993) View in CoL

( Figures 33A, B View FIGURE 33 , 34–36 View FIGURE 34 View FIGURE 35 View FIGURE 36 )

Ischnochiton (Stenochiton) pallens Ashby, 1900: 86 View in CoL (pars), pl. 1, fig. 1 (non pl. 1, figs. IB-E).

Ischnochiton (Chartoplax) nubilus Cochran, 1993: 51 View in CoL , figs. 1–2 (bibliography).

Non: Ischnochiton pallens View in CoL ; Torr, 1912; Gatliff & Gabriel, 1917 (= Stenochitvn cymodocealis Ashby, 1918 ); Stenochiton pallens View in CoL ; Ashby, 1920, 1921; Gatliff & Gabriel, 1931 (= Stenochiton cymodocealis Ashby, 1918 View in CoL ).

Stenochiton nubilus View in CoL ; Kaas et al. 2006: 43, fig. 11, map 3.

Type material. Holotype ( SAMA 011728 About SAMA ). Type locality. South Australia , Gulf St. Vincent, dredged.

Material examined. TAS: Tasman Sea, Tamboon, 10 km to SE Lot _60, 37.81°S, 149.0099°E, Benthic dredge, CSIRO, 1 spm ( TMAG, E 45527 View Materials ) BL 9.5 x 6.0 mm, 26.11.1996 GoogleMaps .

Distribution. South Australia, Gulf St. Vincent and Tasman Sea, 18 m ( Kaas et al. 2006) The latest find significantly expands the range of this species.

Remarks. Cochran (1993) and Kaas et al. (2006) mentioned that this species is more than 2.5 times longer than wide. The specimen collected near Tasmania (TMAG, E 45527) is noticeable shorter than the type specimen. The long body is one of the characteristic features of the species of this genus living on the long leaves of sea grasses. Our specimen has a short body and, apparently, with age, its body rapidly lengthens. It is clearly visible on all valves that growth along the anterior-posterior axis exceeds lateral growth by far. The studied specimen (TMAG, E 45527) has slit formula 0/1–2/ 10, dorsal elevation 0.45, 16 gills per side arranged from valve II to valve VIII.

CSIRO

Australian National Fish Collection

TMAG

Tasmanian Museum and Art Gallery

Kingdom

Animalia

Phylum

Mollusca

Class

Polyplacophora

Order

Chitonida

Family

Ischnochitonidae

Genus

Stenochiton

Loc

Stenochiton nubilus ( Cochran, 1993 )

Sirenko, Boris 2023
2023
Loc

Stenochiton nubilus

Kaas, P. & Van Belle, R. A. & Strack, H. L. 2006: 43
2006
Loc

Ischnochiton (Chartoplax) nubilus

Cochran, T. G. 1993: 51
1993
Loc

Ischnochiton (Stenochiton) pallens

Ashby, E. 1900: 86
1900
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