Amphimetra tessellata ( Müller, 1841 )

Es, Mekhova & Ta, Britayev, 2015, Soft substratecrinoids (Crinoidea: Comatulida) andtheir macrosymbionts in Halong Bay (North Vietnam), Raffles Bulletin of Zoology 63, pp. 438-445 : 442

publication ID

https://doi.org/ 10.5281/zenodo.5385536

publication LSID

lsid:zoobank.org:pub:39EA82B2-4BF4-41AB-9B25-D51A3F0D1EC1

DOI

https://doi.org/10.5281/zenodo.5466947

persistent identifier

https://treatment.plazi.org/id/D63B87CB-FF91-7D35-F587-E273FB36FD27

treatment provided by

Valdenar

scientific name

Amphimetra tessellata ( Müller, 1841 )
status

 

Amphimetra tessellata ( Müller, 1841) View in CoL

( Fig. 2c View Fig )

Alecto tessellata Müller, 1841: 179–189 View in CoL

Amphimetra tessellata discoidea Clark AH, 1909 View in CoL :

Amphimetra discoidea Clark AH, 1911: 435–467 View in CoL

Amphimetra tessellata Clark AH, 1921: 128 View in CoL ; Mekhova & Britayev, 2012: 461–462; Messing, 2015.

Material. South China Sea , Halong Bay, Katba Is, St. 1, 1–4 m depth, 30 April 2012 – 1 specimen ; St. 2, 10–15 m depth, 30 April 2012 – 2 specimens.

Coloration. White, becoming purple in alcohol. It differs from our specimens from Nhatrang Bay having bright-brown coloration ( Mekhova & Britayev, 2012).

Mesurements. Ten arms 70–140 mm in length, 21–30 cirri 23–31 mm in length.

Taxonomic remarks. Morphology of this specimen is in accordance with the diagnoses of A. tessellata provided by Messing (2015). It differs by a small synarthrial tubercle on IBr2 from closely related species, A. ensifer ( Clark AH, 1909) having a synarthrial tubercle on IBr2 developed as a tall conical process ( Messing, 2015). Our specimens slightly smaller than that found in Nhatrang Bay ( Mekhova & Britayev, 2012).

Ecological notes. Rare. Found solitary, 4–15 m depth, on muddy sand. Diurnal, during the day fully exposed with the arms arranged in a parabolic filtration fan. Reported earlier clinging to algae, rocks and boulders ( Messing et al., 2006; Mekhova & Britayev, 2012).

Symbionts. Polychaetes Hololepidella cf. laingensis , Myzostoma cf. fissum; ophiuroid Ophiomaza cacaotica ; Amphipoda fam. et gen. sp.

Distribution. Japan, China, Vietnam, Philippines, Indonesia, Thailand, Australia, Fiji, India. ( Clark & Rowe, 1971; Lane et al., 2000; Mekhova & Britayev, 2012; Messing, 2015). First record from the Tonkin Gulf.

Kingdom

Animalia

Phylum

Echinodermata

Class

Crinoidea

Order

Comatulida

Family

Himerometridae

Genus

Amphimetra

Loc

Amphimetra tessellata ( Müller, 1841 )

Es, Mekhova & Ta, Britayev 2015
2015
Loc

Amphimetra tessellata

Mekhova ES & Britayev TA 2012: 461
Clark AH 1921: 128
1921
Loc

Amphimetra discoidea

Clark AH 1911: 467
1911
Loc

tessellata Müller, 1841: 179–189

Muller, J. 1841: 189
1841
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