Trigonostomum Schmidt, 1852

Diez, Yander L., Monnens, Marlies, Wuyts, Arlien, Brendonck, Luc, Reygel, Patrick, Schmidt-Rhaesa, Andreas & Artois, Tom, 2023, Taxonomy and phylogeny of Dalytyphloplanida Willems et al., 2006 (Platyhelminthes: Rhabdocoela), with the description of a new family, a new genus, and sixteen new species from Cuba and Panama, Organisms Diversity & Evolution (New York, N. Y.) 23 (4), pp. 631-681 : 662

publication ID

https://doi.org/ 10.1007/s13127-023-00623-w

publication LSID

lsid:zoobank.org:pub:4D2516BA-19CF-46C6-8D96-F17DD505B4FF

persistent identifier

https://treatment.plazi.org/id/0C021059-6F74-FF88-1E98-FF26FAB5FED3

treatment provided by

Felipe

scientific name

Trigonostomum Schmidt, 1852
status

 

Trigonostomum Schmidt, 1852 View in CoL

Trigonostomum armatum ( Jensen, 1878) Gamble, 1900 View in CoL ( Fig. 17 View Fig )

Trigonostomum sp. 1 in Diez et al. (2023)

Known distribution. Norway ( Graff, 1882; Jensen, 1878; Westblad, 1954; Willems et al., 2004b), English Channel ( Gamble, 1893), North Sea ( Attems, 1897; Meixner, 1924, 1925), Ireland ( Gamble, 1893, 1900; Southern, 1912, 1915, 1936), Faeroe Islands ( Steinböck, 1931), Iceland ( Steinböck, 1938), Baltic Sea ( Ax, 1952). United Kingdom, Sweden, Wimeroux ( France), Curaçao, New South Wales, Arrawarra ( Australia), Nouméa ( New Caledonia), and South Georgia ( Willems et al., 2004b).

Material and distribution. Cuba: Observations on live animals. Nine whole mounts and one specimen for molecular analyses from Siboney (22 March and 5 June 2017) (HU XIX.4.25– XIX.4.33); sublittoral, on algae ( Ulva lactuca , U. flexuosa , and Gracilaria sp. ), 0.5 m deep, salinity 32–35‰. One whole mount from Bueycabón (6 February 2018) ( XIX.4.34), sublittoral, 0.5 m deep, on the red alga Galaxaura rugosa , salinity 33‰. One whole mount from Playa Caletón (24 January 2020) ( XIX.4.35), sublittoral, 0.5 m deep, on leaves of the seagrass Syringodium filiforme , salinity 37‰.

Remarks. For a detailed treatment of this species, see Willems et al. (2004b) and references therein. The live specimens collected in Cuba are about 0.8–1 mm long. The body is translucent, with anterior spots consisting of dark pigment granules. Each eye ( Fig. 17a View Fig : e) is observed as two pigmented spots due to squeezing. The stylet ( Fig. 17a, b View Fig : st, 17c) is 333–369 µm long (x = 352 µm; n = 8). The bursal appendage ( Fig. 17a, b View Fig : ba) is 84–100 µm long (x = 89 µm; n = 6). The bursal channel is sclerotised ( Fig. 17a, b View Fig : sbc).

Kingdom

Animalia

Phylum

Platyhelminthes

Order

Rhabdocoela

Family

Trigonostomidae

Loc

Trigonostomum Schmidt, 1852

Diez, Yander L., Monnens, Marlies, Wuyts, Arlien, Brendonck, Luc, Reygel, Patrick, Schmidt-Rhaesa, Andreas & Artois, Tom 2023
2023
Loc

Trigonostomum armatum ( Jensen, 1878)

Gamble 1900
1900
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