Sertularella curta Galea & Schories 2014
Description
Sertularella curta Galea & Schories, 2014
Fig. 7M, N
Sertularella curta Galea & Schories, 2014 in Galea et al., 2014: 34, figs 6D-E, 7C.
Sertularella geniculata. – Leloup, 1974: 28, fig. 23 [non Sertularella geniculata Hincks, 1874 = Sertularella tenella (Alder, 1857)].
Material examined: MHNG-INVE-86236; Chile, Región de Antofagasta, Taltal, -25.38333° -70.51667°, 12-20 m, coll. D. Schories, lot #24; 24.04.2012; a 1.8 cm high, male colony (holotype). – MHNG- INVE-86237; Chile, Región de Antofagasta, Taltal, -25.38333° -70.51667°, 12-20 m, coll. D. Schories, lot #25; 22.04.2012; a 1.6 cm high, male colony (paratype).
Description: Colonies arising from creeping, branching stolon. Stems erect, up to 1.8 cm high, monosiphonic; basal part very short and ahydrothecate, either smooth or with up to 4 annuli; remainder of stem slightly geniculate, divided into short internodes by means of inconspicuous constrictions of the perisarc; a hydrotheca to the distal end of each internode. Side branches, when present (up to 3 per stem), short and arising irregularly from below a stem hydrotheca, either in front or the rear side of the colony; occasionally, the branches arise from within the stem hydrothecae; up to 2nd order branching observed. Hydrothecae biseriate, alternate, fusiform, adnate for about 2/3rd their length to the corresponding internode; free adaxial wall with about 3 transverse ridges prolonged abaxially; abaxial wall slightly concave, aperture expanding below rim, and perpendicular to long axis of the theca; margin with 4 equally-developed, triangular cusps separated by rounded, moderately-deep embayments; a 4-flapped operculum; 3 internal, submarginal cusps (2 latero-adaxial, 1 abaxial), not always noticeable. Gonothecae (only male known) originating from below the hydrothecal bases; ovoid-fusiform, walls with 6-7 transverse ridges, aperture surrounded by 4 perisarc projections.
Dimensions: Internodes 340-490 μm long and 170- 210 μm wide at nodes. Hydrothecal free adaxial length 345-380 μm, adnate adaxial length 230-270 μm, abaxial length 485-515 μm, maximum width 250-270 μm, diameter at aperture 210-230 μm. Male gonotheca 1440-1660 μm long and 575-620 μm wide.
Remarks: The gonotheca of this species is illustrated by Galea et al. (2014, fig. 7C).
Distribution: Chile – Región de Antofagasta [Bahía de Tocopilla (Leloup, 1974, as S. geniculata), Taltal (Galea et al., 2014)].
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Sertulariidae
- Genus
- Sertularella
- Kingdom
- Animalia
- Order
- Leptothecata
- Phylum
- Cnidaria
- Scientific name authorship
- Galea & Schories
- Species
- curta
- Taxon rank
- species
- Taxonomic concept label
- Sertularella curta Galea, 2014 sec. Galea, Schories, Häussermann & Försterra, 2017
References
- Galea H. R., Schories D., Forsterra G., Haussermann V. 2014. New species and new records of hydroids (Cnidaria: Hydrozoa) from Chile. Zootaxa 3852 (1): 1 - 50.
- Leloup E. 1974. Hydropolypes calyptoblastiques du Chili. Report no. 48 of the Lund University Chile Expedition 1948 - 1949. Sarsia 55: 1 - 61.
- Hincks T. 1874. On deep-water Hydroida from Iceland. Annals and Magazine of Natural History (4) 13 (74): 146 - 153.
- Alder J. 1857. A catalogue of the zoophytes of Northumberland and Durham. Transactions of the Tyneside Naturalists' Field Club 3 (2): 93 - 162.