Hebella striata Allman 1888

• Main Authors: Galea, Horia R., Schories, Dirk, Försterra, Günter, Häussermann, Verena
• Format: Text
• Language: unknown
• Published: Zenodo 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Cnidaria; Hydrozoa; Leptothecata; Hebellidae; Hebella; Hebella striata; Antarctic; Kerguelen; Medusa; Contreras; Yelcho; Antarc*; Tierra del Fuego
• Online Access: https://dx.doi.org/10.5281/zenodo.6143157; https://zenodo.org/record/6143157

Hebella striata Allman, 1888 (Fig. 1 C, D) Material examined . HF 7, Remolina, lat. - 41.80727, long. - 73.52517, 23.i.2009, 23 m, sample B 244: colony on Eudendrium sp., several gonothecae present (MHNG-INVE- 86207). HF 16, East of Seño Contreras, lat. - 50.34242, long. - 75.2259, 24.iv.2013, 22 m, sample 579: colonies on Symplectoscyphus filiformis (Allman, 1888) and Lafoea dumosa (Fleming, 1828), one gonotheca found (MHNG-INVE- 86206). Remarks . Details on the trophosome of this species have been given in an earlier account (Galea 2007). Several gonothecae occur in the present material. They are large, tubular, tapering gradually basally into an indistinct pedicel of varied length. Distally truncated and covered by a thin layer of perisarc that is ruptured upon release of the gonophore, thus producing a four-flapped “operculum”. Elsewhere, the perisarc is transversely wrinkled, but the striations are coarser than on the hydrotheca, and fade off basally. In order to preserve the integrity of samples, only the depicted gonotheca (Fig. 1 D) was measured: it is 2220 µm long and 510 µm wide just above the aperture. There is one gonophore per gonotheca, and no morphological details could be observed in this fairly well preserved material. In contrast, Hartlaub (1905) figured several medusa buds in a conspicuously curved gonotheca. Distribution in Chile . The northern limit of this species is probably the Ancud Gulf and the Calbuco Channel (Leloup 1974), while it reaches Tierra del Fuego in the South (Hartlaub 1905). World records . A subantarctic and Antarctic species (Vervoort 1972, Millard 1977). : Published as part of Galea, Horia R., Schories, Dirk, Försterra, Günter & Häussermann, Verena, 2014, New species and new records of hydroids (Cnidaria: Hydrozoa) from Chile, pp. 1-50 in Zootaxa 3852 (1) on page 6, DOI: 10.11646/zootaxa.3852.1.1, http://zenodo.org/record/286956 : {"references": ["Allman, G. J. (1888) Report on the Hydroida dredged by H. M. S. Challenger during the years 1873 - 76. Part II. - The Tubularinae, Corymorphinae, Campanularinae, Sertularinae and Thalamophora. Report on the Scientific Results of the Voyage of H. M. S. Challenger during the year 1873 - 76, Zoology, 23 (70), 1 - 90.", "Hartlaub, C. (1905) Die Hydroiden der Magalhaensischen Region und chilenischen Kuste. In: Fauna chilensis. Zoologische Jahrbucher, 6 (3) (Supplement), 497 - 714.", "Leloup, E. (1974) Hydropolypes calyptoblastiques du Chili. Report no. 48 of the Lund University Chile Expedition 1948 - 1949. Sarsia, 55, 1 - 61.", "Vervoort, W. (1972) Hydroids from the Theta, Vema and Yelcho cruises of the Lamont-Doherty geological observatory. Zoologische Verhandelingen, Leiden, 120, 1 - 247.", "Millard, N. A. H. (1977) Hydroids from the Kerguelen and Crozet shelves, collected by the cruise MD. 0 3 of the Marion- Dufresne. Annals of the South African Museum, 73 (1), 1 - 47."]}