Ophelina basicirra, Helgason, 2011

Helgason, Julio Parapar Juan Moreira Gudmundur V., 2011, Distribution and diversity of the Opheliidae (Annelida, Polychaeta) on the continental shelf and slope of Iceland, with a review of the genus Ophelina in northeast Atlantic waters and description of two new species, Organisms Diversity & Evolution (New York, N. Y.) 11 (2), pp. 83-105 : 89

Ophelina basicirra sp. nov.

( Figs. 1c , 5 , 6 , 7 and 8 )

Figures

Fig. 1 Maps of the study area and collecting sites of samples including specimens of Opheliidae. a All samples combined. b Ammotrypanella cf. arctica McIntosh. c Ophelina basicirra sp. nov. d Ophelina bowitzi sp. nov

Fig. 5 Ophelina basicirra sp. nov. (holotype, IMNH 24314). a Anterior end, lateral view. b Posterior end, lateral view. Scale bar: 0.5 mm

Fig. 6 Ophelina basicirra sp. nov. (paratypes, IMNH 24318, BIOICE sample 2303). a Anterior end, dorsal view. b Anterior end, ventral view. c Nuchal organ and first chaetiger. d Mid-body chaetiger, ventral view; arrow marks position of anterior lobe. e Mid-body chaetiger, arrow marks position of lateral organ. f Detail of lateral organ. Scale bars: (a) 200 μm; (b) 500 μm; (c) 100 μm; (d) 50 μm; (e) 60 μm; (f) 10 μm

Fig. 7 Ophelina basicirra sp nov. (paratypes, IMNH 24318, BIOICE sample 2303). a Cilia and pores on body surface. b Posterior end, ventral view. c Detail of ciliated ventral trans- verse bands. d Posterior body chaetigers. e Branchiae. f Detail of hirsute chaetae. Scale bars: (a, f) 10 μm; (b) 200 μm; (c) 50 μm; (d) 90 μm; (e) 100 μm

Fig. 8 Ophelina basicirra sp. nov. (Paratypes, IMNH 24318, BIOICE sample 2303). a, b Posterior end with anal tube, lateral views. c, d Cirri of anal tube. e Anal tube, ventral view. f Detail of anal cirrus of anal tube. Scale bars: (a, b) 300 μm; (c) 90 μm; (d) 50 μm; (e) 200 μm; (f) 60 μm