Trigonostomum breitfussi
- Dataset
- Revision of Trigonostomum Schmidt, 1852 (Platyhelminthes, Typhloplanoida, Trigonostomidae) with the description of seven new species
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Platyhelminthes
- class
- Rhabditophora
- order
- Rhabdocoela
- family
- Trigonostomidae
- genus
- Trigonostomum
- species
- Trigonostomum breitfussi
description
(FIG. 7 E)
diagnosis
Diagnosis: Trigonostomum species with copulatory organ ± 62 Mm long. Stylet ± 64 Mm long, proximally bent over, 180 ∞ and with a crest. Mantle with one blunt plate (shorter than the stylet), surrounds only the distal part of the stylet. Bursal appendage 20 – 24 Mm long, proximally with a barrel-like casing and nine or ten distal tubes.
discussion
Remarks: The observation of Ax (1952) that there is only one plate-like structure instead of two (Graff, 1905), surrounding the tubiform stylet, can be confirmed. This plate has a spine-like projection at its distal end, which lies close to the stylet but is displaced in highly squeezed animals (Fig. 7 E 1). The bursal appendage is short (Graff, 1913 24 Mm; Ax, 1952: 20 – 21 Mm), barrel-shaped and consists of nine, maybe ten, short tubes (Fig. 7 E 3).
distribution
Known distribution: Barents Sea (Graff, 1905), Baltic Sea (Ax, 1952), Greenland (Steinböck, 1932), North Sea (Meixner, 1924 b, 1925; Ax, 1952; Armonies & Hellwig-Armonies, 1987), Norway (Westblad, 1954). New locality: Sweden, Gullmaren, Kristineberg, 23, 26 and 27 July 1932, Westblad (coll. SMNH; type locality). Sweden, Gullmaren, on algae, 6 August 1945, Westblad (coll. SMNH). Sweden, Gullmaren, Harpo Bedar, on red algae, 20 m deep, 7 August 2001.
materials_examined
Material examined: Observations on live material from Sweden. Neotype (SMNH, no. 47461). Two whole mounts (SMNH, nos. 47462 – 3) and two serially sectioned specimens (SMNH, nos. 47469 – 70) from Sweden.
Name
- Homonyms
- Trigonostomum breitfussi