Revisiting Potter Cove, King George Island, Antarctica, 12 years later: new observations of marine benthic diatoms Author Al-Handal, Adil Y. Author Torstensson, Anders Author Wulff, Angela text Botanica Marina 2022 Warsaw, Poland 2022-02-23 65 2 81 103 http://dx.doi.org/10.1515/bot-2021-0066 journal article 10.1515/bot-2021-0066 1437-4323 11000147 Family Rhabdonemataceae Rhabdonema arcuatum (Lyngbye) Kützing ( Figure 36 ) Literature: ( Hendey 1964 , p. 172, pl. 35, figs. 10–12; Poulin et al. 1984b , p. 284, figs. 54, 56–59; Witkowski et al. 2000, p. 76, pl. 13, figs. 2–4). Description: length 86–92, width 8–12 µm, striae 6–8 in 10 µm. Remarks: Three specimens were observed in the whole material. This is an epiphytic species and seldom found in the plankton or attached to sediment grains. Ecology and distribution: A marine species mostly found in warm and temperate waters but also reported from the sub-Arctic ( Poulin et al. 1984b ) and the Arctic ( von Quillfeldt 2000 ) and from Antarctica (Al-Handal and Wulff 2008b) . Rare in Potter Cove.