First record of genus Orbiniella Day, 1954 (Polychaeta: Orbiniidae) in North Atlantic Ocean with the description of a new species Author Parapar, Julio Author Moreira, Juan Author Helgason, Gudmundur Vidir text Zootaxa 2015 4006 2 330 346 journal article 40183 10.11646/zootaxa.4006.2.5 f783d4b1-8402-476e-9b94-e5e9419959db 1175-5326 232859 C6FF2AFA-3BD7-4B22-BE72-C48984714099

TABLE 1. Comparison of some relevant characters in the external morphology of described species of Orbiniella.

O. annulata (Hartman, 1967)	yes	n.d.	two segments	uniannulated1	crenulated 0[0]	one pair of short lobes
O. uniformis Hartman, 1967	no	n.d.	smooth buccal rings	uniannulated	crenulated or camerated 0[2] along the convex edge	bilobed
O. nuda Hobson, 1974 O. aciculata Blake, 1985	yes no	n.d. no	first two achaetous segments first two achaetous segments	uniannulated biannulated1	spine-like 0[n.d.] with transverse rows of 0 3 [0] delicate barbs	bilobed 2 short anal cirri; inflated and unsegmented prepygidial region.
O. hobsonae Blake and Hilbig, 1990	n.d.	yes	achaetous buccal segments	uniannulated1	bristled 0[0]	simple, without lobes or cirri
O. plumisetosa Buzhinskaja, 1993	yes	n.d.	two anterior segments achaetous	uniannulated1	hairy smooth or with teeth 0[0] + plumose and cirrate	two rounded lobes
O. dayi Branch, 1998	no	n.d.	first two segments achaetous	anterior 10 segments slightly biannulated	crenulated with distinct 0[0] teeth	simple with a terminal slit
O. marionensis Gillet, 1999 O. andeepia Narayanaswamy and Blake, 2005	no n.d.	n.d. yes	first two segments achaetous two peristomial segments	uniannulated1 uniannulated1	crenulated 1[1] camerated with barbs 0 occurring in two symmetrical rows	rounded with one preanal segment bilobed with two cirriform appendages
O. petersenae sp. nov.	yes	yes	first two achaetous segments	deeply biannulated and triannulated	crenulated 0	tetralobed