Sertularella mediterranea Hartlaub 1901
- Dataset
- Taxonomic revision of the genus Sertularella (Cnidaria: Hydrozoa) from southern South America and the subantarctic, with descriptions of five new species
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Cnidaria
- class
- Hydrozoa
- order
- Leptothecata
- family
- Sertulariidae
- genus
- Sertularella
- species
- Sertularella mediterranea
description
Description: Stems erect, up to 1.5 cm high, monosiphonic, sparingly and irregularly branched. Internodes rather short, delimited by deep, oblique constrictions of the perisarc, basally with a more or less marked bulge; first internodes of side branches comparatively longer than subsequent ones, with 2 - 3 basal twists; distally a hydrotheca to each internode. Hydrothecae flask-shaped, adnate for less than half their length, swollen basally (notably on adaxial side), constricted below aperture; rim with 4 cusps, abaxial one conspicuously produced, adaxial one the shortest, and recurved outwards; rim not thickened; 3 internal, submarginal projections of perisarc (2 lateroadaxial, 1 abaxial). Gonothecae arising from below the hydrothecal bases, broadly ovoid, walls with 6 - 9 transverse ridges, aperture surrounded by 4 (rarely 5) pointed cusps. Dimensions: See Table 16.
description
Fig. 14 A-E; Table 16
discussion
Remarks: The description given above is based on Argentinean material, and combines both Blanco’s (1967, as S. picta) and Genzano’s (1990) accounts. Blanco (1994) regarded her earlier record as conspecific with the present species, although El Beshbeeshy (2011) still believed that it belonged to Meyen’s hydroid. The occurrence of S. mediterranea Hartlaub, 1901 in Argentina is plausible, as additional remote records are, for instance, from South Africa (Millard, 1975).
distribution
Distribution: Uruguay – Cabo Polonio (Mañé Garzón & Milstein, 1973, as S. uruguayensis). Argentina – Provincia de Buenos Aires [Mar del Plata (Blanco, 1967, as S. picta; Genzano 1990)]. Elsewhere – widely distributed in the Mediterranean and the eastern Atlantic, from Spitzbergen to South Africa (Ramil et al., 1992).
materials_examined
Material examined: HRG- 0001; France, La Ciotat, 43.174850 ° 5.611921 °, 0.5 m, coll. H. R. Galea; 16.03.2003; male colony composed of numerous stems, up to 4 cm high.