Styraconyx sargassi Thulin, 1942

Kaczmarek, Łukasz, Bartels, Paul J., Roszkowska, Milena & Nelson, Diane R., 2015, The Zoogeography of Marine Tardigrada, Zootaxa 4037 (1), pp. 1-189: 110-111

publication ID

http://dx.doi.org/10.11646/zootaxa.4037.1.1

publication LSID

lsid:zoobank.org:pub:670819B1-3840-4C0A-ABFF-4D5AE3A263C0

persistent identifier

http://treatment.plazi.org/id/A5435063-FFF3-FFFF-FF18-FAFEFC6CFB95

treatment provided by

Plazi

scientific name

Styraconyx sargassi Thulin, 1942
status

 

117. Styraconyx sargassi Thulin, 1942 

Bathyechiniscus tetronyx G. Steiner, 1926 ( Marcus 1936) 

Bathyechiniscus tetronyx G. Steiner ( Mathews 1938) 

Styraconyx sargassi  n. sp. ( Thulin 1942)

Bathyechiniscus tetronnyx G. Steiner 1926  ( Rodriguez-Roda 1947, 1952) Bathyechiniscus tetronyx Steiner, 1926 ( Chitwood 1951) 

Styraconyx sargassi  ( Renaud-Mornant 1979 a)

Terra typica  : Atlantic Ocean (Azores)

Atlantic Ocean:

• 43 ° 4 ′N, 31 °W [43 °04′N, 31 °00′W]; [FAO 27] Type Locality: Undefined locality, N of Azores, floating Sargassum  . Marcus (1936), Thulin (1942), Du Bois-Reymond Marcus (1960), Kristensen & Higgins (1984 a)

• (?) 27 ° 57 ′N, 97 °01′W; 4 ft bsl / 0 m bsl: [FAO 31] USA, Texas State, Aransas County, Gulf of Mexico, near Rockport, Aransas Bay, Mud Island. Chitwood (1951), Renaud-Mornant (1967 b)

• (?) 28 °04′N, 96 ° 51 ′W; 4 ft bsl / 0 m bsl: [FAO 31] USA, Texas State, Aransas County, Gulf of Mexico, near Rockport, Cedar Bayou, sample from Sargassum  (brown alga). Chitwood (1951), Renaud-Mornant (1967 b)

Balearic Sea:

• (?) 41 ° 35 ′N, 02° 33 ′E; 0 m bsl: [FAO 37] Spain, N oriental coast of Spain, Barcelona Province, Arenys de Mar, a small breakwater (protected part), almost superficial rocks, cement blocks and gravel, marine algae.

Rodriguez-Roda (1947, 1952), Renaud-Mornant (1967 b)

• (?) 39 ° 54 ′N, 03°05′E; 0 bsl: [FAO 37] Spain, Balearic Islands, Majorca, Pollença Municipality, Port de Pollença. Rodriguez-Roda (1947, 1952), Renaud-Mornant (1967 b)

• (?) 38 ° 36 ′N, 00°03′W; 0 bsl: [FAO 37] Spain, Alicante Porvince, Altea. Rodriguez-Roda (1947, 1952), Renaud-Mornant (1967 b)

Indian Ocean:

• (?) 23 ° 23 ′S, 43 ° 38 ′E; 0 m bsl: [FAO 51] Republic of Madagascar, Toliara Province, Toliara, Mozambique Channel, great reef, stations 1 F, 3 F – 5 F and 10 F, coralline sand. Renaud-Mornant (1979 a)

Pacific Ocean:

• 36 ° 42 ′N, 121 ° 49 ′W: [FAO 77] Undefined locality, USA, California State, California coast, in washings from the brown alga Dictyota  . Mathews (1938)

Record numbers (Sea/Ocean classification): Atlantic Ocean: 1 (3?), Balearic Sea: 3?, Indian Ocean: 1?, Pacific Ocean: 1; total: 8 (6?).

Record numbers (FAO classification): FAO 27: 1, FAO 31: 2?, FAO 37: 3?, FAO 51: 1?, FAO 77: 1; total: 8 (6?).

Remarks: This nominal species of the sargassi  group has a long history of taxonomic confusion and misidentification (for more details see Kristensen & Higgins 1984 a). At present, it is not possible to determine which records belong to this species and which do not. Kristensen & Higgins (1984 a) suggested that this species may be restricted to algal associations and that specimens from other substrates should be examined very carefully. Additionally, the same authors rejected the suggestion by Renaud-Mornant (1967 b) that the Chitwood (1951) specimens (marked as Bathyechiniscus tetronyx, Chitwood 1954  , p. 325) from the Gulf of Mexico belong to S. sargassi  . Rather, Kristensen & Higgins (1984 a) stated that the Chitwood specimens are neither of these species, but probably belong to two different taxa. For the purposes of this paper we have included these records but identified them with bracketed question marks as it is not clear to which species they should be attributed. According to Kristensen & Higgins (1984 a), the only records that are most likely to belong to S. sargassi  are those of Rodriguez-Roda (1947, 1952) and Matthews 1938. In conclusion, and in agreement with Kristensen & Higgins (1984 a), only the specimens from California and the type locality should be considered as valid, while other localities need confirmation.

Kingdom

Animalia

Phylum

Tardigrada

Class

Heterotardigrada

Order

Arthrotardigrada

Family

Halechiniscidae

Genus

Styraconyx

Loc

Styraconyx sargassi Thulin, 1942

Kaczmarek, Łukasz, Bartels, Paul J., Roszkowska, Milena & Nelson, Diane R. 2015

2015
Loc

Bathyechiniscus tetronyx Steiner, 1926 ( Chitwood 1951 )

Steiner, 1926 (Chitwood 1951

1951
Loc

Bathyechiniscus tetronyx G. Steiner ( Mathews 1938 )

G. Steiner (Mathews 1938

1938
Loc

Bathyechiniscus tetronyx G. Steiner, 1926 ( Marcus 1936 )

G. Steiner, 1926 (Marcus 1936

1936
Loc

Bathyechiniscus tetronnyx

G. Steiner 1926

1926