Cocconeis matsii (Al-Handal, Riaux-Gobin et Wulff) Riaux-Gobin, Compère, Romero et Williams

Al-Handal, Adil Y., Torstensson, Anders & Wulff, Angela, 2022, Revisiting Potter Cove, King George Island, Antarctica, 12 years later: new observations of marine benthic diatoms, Botanica Marina (Warsaw, Poland) 65 (2), pp. 81-103 : 92

Cocconeis matsii (Al-Handal, Riaux-Gobin et Wulff) Riaux-Gobin, Compère, Romero et Williams ( Figure 53 )

Literature: (Al-Handal et al. 2010, p. 6, figs. 13–18, 25–34 as C. pinnata var. matsii ).

Description: Length 10–13 µm, width 5–7 µm, striae (rapheless valve) 7–8 in 10 µm.

Remarks: This species was originally described from Potter Cove as C. pinnata var matsii but was considered a distinct species based on stria and areola density and structure ( Riaux-Gobin et al. 2003). These authors, however, did not provide images for specimens but rather established a new combination.

Ecology and distribution: The species has not been reported outside its type locality in Potter Cove. Frequent in the material examined.

Figures

Figures 39–59: Marine benthic diatoms in Potter Cove, King George Island, Antarctica, summer 2015. (39) Lyrella hennedyi. (40) Petroneis sp. (41) Petroneis plagiostoma. (42) Staurophora sp. (43–46) Achnanthes cf. groenlandica, (43, 44) raphe valve, (45) sternum valve, (46) two cells in girdle view. (47) Cocconeis californica. (48) Cocconeis californica var. kerguelensis. (49) Cocconeis costata var. hexagona. (50) Cocconeis dallmannii. (51) Cocconeis fasciolata. (52) Cocconeis imperatrix. (53) Cocconeis matsii. (54, 55) Cocconeis melchioroides. (56–59) Cocconeis orbicularis, (56, 59) sternum valve, (57, 58) raphe valve.