To name but a few: descriptions of five new species of Terebellides (Annelida, Trichobranchidae) from the North East Atlantic Author Parapar, Julio Departamento de Bioloxia, Universidade da Coruna, Spain jparapar@udc.es Author Capa, Maria Departament de Biologia, Universitat de les Illes Balears, Spain Author Nygren, Arne Sjoefartmuseet Akvariet, Goeteborg, Sweden and Institutionen foer marina vetenskaper, Goeteborgs Universitet, Sweden Author Moreira, Juan Departamento de Biologia (Zoologia) & Centro de Investigacion en Biodiversidad y Cambio Global (CIBC-UAM), Facultad de Ciencias, Universidad Autonoma de Madrid, Spain https://orcid.org/0000-0002-1374-2033 text ZooKeys 2020 992 1 58 http://dx.doi.org/10.3897/zookeys.992.55977 journal article http://dx.doi.org/10.3897/zookeys.992.55977 1313-2970-992-1 0F038B5B120E45838E854092C9798566 6F09FA35C1585CCF8F9B519ADD7C0BFA

Table 1. Comparison of discriminatin g taxonomic characters of the species studied in this work. Cells with text in italic show discriminatory characters of each subgroup. Species 18, 19, and 23 were not studied and 12 and 21 only examined with SEM.

Subgroups		A1						A2				A3		A4
Species sensu Nygren et al. (2018)		10	11	12	13	18	19	6	7	8	9	20 + 28	21	23
SPECIES		T. bakkeni sp. nov.	T. stroemii Sars, 1835	Terebellides sp. 1	T. kongsrudi sp. nov.			T. europaea Lavesque et al., 2019	T. ronningae sp. nov.	T. norvegica sp. nov.	T. scotica sp. nov.	T. bigeniculatus Parapar et al., 2011	Terebellides sp. 2
(as reported/described here)
(1) sensu Parapar et al. (2016c); (2) sometimes irregular; (3) sensu Parapar et al. (2020); (4) this work; (5) dominant trend in bold; (6) Skagerrak and Kattegat; (7) Irish Sea
Branchiae	type (1)	1	1	1	1	-	-	1	1	1	1	1 (2)	1 (2)	-
	papillae on lamellae edge	no	no	no	no	-	-	yes	yes	yes	yes	no	no	-
Thorax	ciliated papilla dorsal to notopodium	yes	yes	yes	yes	-	-	no	no (?)	no	no	yes	yes	-
	chaetiger(s) with geniculate chaetae	TC6	TC6	TC6	TC6	-	-	TC6	TC6	TC6	TC6	TC5 + TC6	TC5 + TC6	-
	uncini type (3)	3	3	3	3	-	-	3	1	3	3	3	3	-
Abdomen	uncini type (4)	1A	2	2	1A	-	-	2	2	2	2	1B	1B	-
Bathymetry - Above (A) / Below (B) 200 m depth (5)		A / B	A / B	A	A / B	B	B	A	A	B	A	B	A / B	B
Distribution - North (N) /South (S) of 60°N (5)		N	N	S	N / S	N	N	S (6)	N / S	N / S	S (7)	N	N	N