Stenostomum virginianum Nuttycombe, 1931

Noreña, Carolina, Damborenea, Cristina & Brusa, Francisco, 2005, A taxonomic revision of South American species of the genus Stenostomum O. Schmidt (Platyhelminthes: Catenulida) based on morphological characters, Zoological Journal of the Linnean Society 144 (1), pp. 37-58 : 50

publication ID

https://doi.org/ 10.1111/j.1096-3642.2005.00157.x

DOI

https://doi.org/10.5281/zenodo.5113626

persistent identifier

https://treatment.plazi.org/id/8C6887DA-3077-C475-FFBD-A04FD3E4ABB8

treatment provided by

Carolina

scientific name

Stenostomum virginianum Nuttycombe, 1931
status

 

Stenostomum virginianum Nuttycombe, 1931 View in CoL

( Fig. 3F View Figure 3 )

Stenostomum carnivorum Jones, 1932 View in CoL

Description: Individuals with 1–4 zooids up to 5 mm long, solitary individuals 0.4–1 mm long. Mobile tapering anterior end. Small, rounded ciliated pits lateral or latero-ventrally placed. Truncate caudal end without intestine-lacking region. Vacuolar epidermic cells and short rhabdites. Long semi-rigid cilia concentrated in the anterior and posterior ends of the body. Vacuolar epidermal cells. Colour in life whitish.

Anterior brain lobes forming small independent masses (‘metameric’). A pair of light-refracting bodies, with fewer than ten spheres (type 2), associated with an extension of the posterior brain lobes.

Small rounded oral pore. Long tubular pharynx (1/4 body length) with isolated pharyngeal glands (type a) distributed along the entire pharynx. Excretophores regularly arranged in two lateral bands, or irregularly in the North American specimens. Nephridiopore subterminal.

Distribution: Virginia ( Nuttycombe, 1931; Nuttycombe & Waters, 1938), Georgia, North Carolina ( Nuttycombe & Waters, 1938; Kolasa, 1991), USA; Nova Scotia, Canada ( Jones, 1932); São Paulo State and Paraná State, Brazil ( Marcus, 1945b); Los Talas, Berisso, Buenos Aires, Argentina, July 1999. This species has not been previously recorded in Argentina.

Stored material: One sagittally sectioned specimen in the CHMLP No. 5307.

Discussion: Marcus (1945b) and Luther (1960) refer to the similarity between this species and Stenostomum unicolor O. Schmidt, 1848 .

The largest sized specimens correspond to those mentioned by Marcus (1945b)

Kingdom

Animalia

Phylum

Platyhelminthes

Class

Turbellaria

Order

Catenulida

Family

Stenostomidae

Genus

Stenostomum

Loc

Stenostomum virginianum Nuttycombe, 1931

Noreña, Carolina, Damborenea, Cristina & Brusa, Francisco 2005
2005
Loc

Stenostomum carnivorum

Jones 1932
1932
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