Staurotheca compressa Briggs 1938
- Dataset
- Benthic hydroids (Cnidaria, Hydrozoa) from the Ross Sea (Antarctica) collected by the New Zealand Antarctic expedition BioRoss 2004 with RV Tangaroa
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Cnidaria
- class
- Hydrozoa
- order
- Leptothecata
- family
- Sertulariidae
- genus
- Staurotheca
- species
- Staurotheca compressa
discussion
Remarks. This is a species easily distinguishable by the hydrothecal aperture, which is laterally depressed, forming both an adcauline and an abcauline cusp (Fig. 10 A). Ecology and distribution. Reviewed by Peña Cantero & Vervoort (2003) and Peña Cantero (2006). Eurybathic species (Peña Cantero & Vervoort 2003), collected at depths between 45 (Briggs 1938) and 1042 m (Peña Cantero & Vervoort 2003); present material at depths from 110 to 348 m, basibiont for colonies of Hebella plana and Halecium tangaroa sp. nov. and with gonothecae in February. Circum-Antarctic species (Stepanjants 1979), recently reported from off Livingston Island (Peña Cantero 2006, 2008), Deception and Trinity islands (Peña Cantero 2008), Bransfield Island and Bransfield Strait (Peña Cantero & Vervoort 2009), Low Island (Peña Cantero & Vervoort 2009; Peña Cantero 2013) and Elephant Island (Soto Àngel & Peña Cantero 2015), in West Antarctica, and from the Balleny Islands (Peña Cantero 2009), in East Antarctica. See Peña Cantero & Vervoort (2003) for previous records. In the Ross Sea, already known off Scott Coast (Peña Cantero & Vervoort 2003). Present material off Adare Peninsula and Possession Islands.
materials_examined
Material examined. Stn 25, mass of stems, ca. 20 mm in diameter (NIWA 117518); Stn 178, mass of stems, ca. 80 mm high and 70 mm wide, with gonothecae, basibiont of Halecium tangaroa sp. nov. and Hebella plana (NIWA 117519); Stn 197, mass of stems, ca. 100 mm in diameter, with female gonothecae (MNCN 2.03 / 551).
Name
- Homonyms
- Staurotheca compressa Briggs 1938