Lafoea dumosa ( Fleming, 1820 )

ÁLVARO L. PEÑA CANTERO, 2017, Benthic hydroids (Cnidaria, Hydrozoa) from the Ross Sea (Antarctica) collected by the New Zealand Antarctic expedition BioRoss 2004 with RV Tangaroa, Zootaxa 4293 (1), pp. 1-65 : 23-24

Lafoea dumosa ( Fleming, 1820)

Lafoea dumosa —Peña Cantero et al., 2004: 2291–2293, fig. 6F (synonymy); Peña Cantero, 2006: 935, fig. 3A; 2008: 454; 2010b: 765; 2013: 128; 2014a: 1717; Peña Cantero & Gili, 2006: 766; Peña Cantero & Vervoort, 2009: 85; Galea & Schories, 2012: 7 ; Soto Àngel & Peña Cantero, 2015: 989 fig. 3k.

Lafoea gracillima— Totton, 1930: 158 –159, fig. 15a–b.

Material examined. Stn 14, one stem fragment 25 mm long (NIWA 117488); Stn 17, one stem 8 mm high (NIWA 117489); Stn 21, five stem fragments up to 12 mm long, probably belonging to two stems (MNCN 2.03/534); Stn 22, one stem fragment 20 mm long (NIWA 117490); Stn 24, two stems up to 12 mm high (MNCN 2.03/535); Stn 25, one stem 3 mm high on Billardia subrufa (NIWA 117491); Stn 34, one stem fragment 25 mm long (NIWA 117492); Stn 53, two stem fragments up to 7 mm long (NIWA 117493); Stn 112, one stem 10 mm high (NIWA 117494); Stn 126, one colony with a few stolonal hydrothecae, one stem 4 mm high on Staurotheca densa , and one stem 20 mm high on Campanularia hicksoni (NIWA 117495); Stn 128, one stem 20 mm high (MNCN 2.03/536); Stn 129, six stems up to 40 mm high (NIWA 117496); Stn 130, six stems up to 22 mm high on Staurotheca densa (MNCN 2.03/537); Stn 132, several stems up to 45 mm high on Billardia subrufa and tube of benthic organism (NIWA 117497); Stn 139, a few stems up to 10 mm high on gravel and hydroid stem, and a few stolonal hydrothecae on Staurotheca nonscripta (MNCN 2.03/538); Stn 178, two fragments up to 10 mm long (NIWA 117498).

Ecology and distribution. Species found, in Antarctic waters, at depths between 12 ( Stepanjants 1979) and 1157 m ( Peña Cantero 2014a); present material from 85 to 451 m, epilithic on gravel and epibiotic on Billardia subrufa , Campanularia hicksoni , Staurotheca densa , S. nonscripta and tube of benthic organism.

Cosmopolitan distribution, frequently reported around Antarctica . Recently reported from off Livingston Island (Peña Cantero 2006, 2008), Bouvet Island ( Peña Cantero & Gili 2006), Deception Island ( Peña Cantero 2008), Bransfield Strait and off Elephant and Bransfield islands ( Peña Cantero & Vervoort 2009), off Low Island ( Peña Cantero & Vervoort 2009; Peña Cantero 2013), Peter I Island ( Peña Cantero 2010b), King George Island ( Galea & Schories 2012) , South Georgia and the South Sandwich Islands ( Soto Àngel & Peña Cantero 2015), all in West Antarctica , and from off Queen Mary Coast ( Peña Cantero 2014a), in East Antarctica . See Peña Cantero et al. (2004) for previous records. In the Ross Sea, already known from McMurdo Sound and off Cape Adare ( Totton 1930). Present material collected in Robertson Bay and off Cape Adare, Adare Peninsula, Possession Islands, Moubray Bay and Cape Hallett.