Anokkostenostomum anatirostrum Noreña & Damborenea & Brusa 2005, comb. nov.
Authors/Creators
Description
Anokkostenostomum anatirostrum (Marcus, 1945) comb. nov.
(Fig. 4A)
Stenostomum anatirostrum Marcus, 1945
Stenostomum bryophilum Luther, 1960
Description: Adult specimens 0.2–0.75 mm long. Chains with two zooids (0.5–1 mm) or six zooids (2.5 mm). Anterior end generally rounded, spatulate or sharply arched with ‘anatiform’ aspect. Constriction before the pharynx. Posterior end rounded. The intestine reaches the caudal body region. Epithelium with short uniform cilia and rigid sensory cilia scattered on the body surface, more numerous in the anterior region. Rhabdites regularly distributed in the adult specimens; but in immature individuals only visible in the ciliated pits. Lateral and broad ciliated pits. Colour in life whitish.
Anterior brain lobes formed by small independent masses (‘metamerics’). No light-refracting bodies.
Oral pore oval, frequently surrounded by radial or longitudinal muscular bundles. Pharynx 1.5–2 times longer than it is wide. Presence of conspicuous transverse muscular bundles. Elongated pharyngeal glands (type b) placed on both sides of the pharynx, grouped in clusters and opening into a simple duct. Immature individuals without pharyngeal glands. Presence of excretophores. Protonephridium slightly sinuous, nephridiopore terminal.
Distribution: São Paulo, Brazil (Marcus, 1945b); Tvaerminne, Finland (Luther, 1960); Sabakoekreek, Surinam (Van der Land, 1970); Cheshire and Yorkshire, England; near Poznan, Poland, and south of Mombasa, Kenya (Kolasa & Young, 1974a); France (Lanfranchi & Papi, 1978); Fosso Contesora, Italy (Kolasa, 1983); south-eastern New York State, USA (Kolasa et al., 1987; Kolasa, 1991).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Scientific name authorship
- Noreña & Damborenea & Brusa
- Kingdom
- Animalia
- Phylum
- Platyhelminthes
- Order
- Catenulida
- Family
- Stenostomidae
- Genus
- Anokkostenostomum
- Species
- anatirostrum
- Taxon rank
- species
- Taxonomic status
- comb. nov.
- Taxonomic concept label
- Anokkostenostomum anatirostrum (Marcus, 1945) sec. Noreña, Damborenea & Brusa, 2005
References
- Luther A. 1960. Die Turbellarien Ostfennoskandiens. Fauna Fennica 7: 1 - 155.
- Marcus E. 1945 b. Sobre Microturbelarios do Brasil. Comunicaciones Zoologicas del Museo de Historia Natural de Montevideo 1 (25): 1 - 74. Est I - XI.
- Van der Land J. 1970. Kleine Dieren Uit Het Zoete Water Van Suriname Verslag Van Een Onderzoek In 1967. Zoologische Bijdragen 12: 1 - 46.
- Kolasa J, Young JO. 1974 a. Studies on the genus Stenostomum O. Schmidt (Turbellaria; Catenulida). I. The status of S. anatirostrum Marcus 1945 and S. bryophilum Luther 1960. Freshwater Biology 4: 145 - 156.
- Lanfranchi A, Papi F. 1978. Turbellaria (excl. Tricladida). In: Illies J, ed. Limnofauna Europaea, 2 nd edn. Stuttgart: Gustav Fischer Verlag / Amsterdam: Swets & Zeitlinger B. V., 5 - 15.
- Kolasa J. 1983. Formation of the Turbellaria Fauna in a submontane stream in Italy. Acta Zoologica Cracoviensia 26: 297 - 354.
- Kolasa J, Strayer D, Bannon-O'Donnell E. 1987. Microturbellarians from interstitial waters, and springs in southeaestern New York. Journal of the North American Benthological Society 6: 125 - 132.
- Kolasa J. 1991. Flatworms: Turbellaria. In: Thorp JM, Covich AP, eds. Ecology and classification of North American freshwater invertebrates. New York: Academic Press, 145 - 171.