New and non-indigenous species of Bryozoa from Iberian waters Author Reverter-Gil, Oscar 001DFC48-0F01-43AF-90EC-452BE6954DDF Museo de Historia Natural da Universidade de Santiago de Compostela, Parque Vista Alegre s / n, 15705 Santiago de Compostela, Spain. oscar.reverter@usc.es Author Souto, Javier E14FC8A9-40B5-4BF6-8551-3F2A1D991463 Institut für Paläontologie, Fakultät für Geowissenschaften, Geographie und Astronomie, Geozentrum, Universität Wien, Josef-Holaubek-Platz 2, 1090 Wien, Austria. javier.souto-derungs@univie.ac.at text European Journal of Taxonomy 2023 2023-07-26 885 33 64 http://dx.doi.org/10.5852/ejt.2023.885.2187 journal article 59553 10.5852/ejt.2023.885.2187 a959a92c-3474-4243-8228-9a9ffb751549 2118-9773 8205406 09B12B7A-5A03-447C-826C-10EA479BCCE5 Hincksina synchysia Berning, Spencer Jones & Vieira, 2021 Figs 6 , 12B ; Table 4 Hincksina flustroides f. crassispinata Gautier, 1962: 50 , fig. 8. Hincksina synchysia Berning et al ., 2021: 337 , fig. 2. ? Hincksina flustroides – Zabala & Gili 1985: 138 . — Calvín Calvo 1986: 48 . — Álvarez 1992: 276 . — Madurell et al . 2013: 127 . Hincksina flustroides – Zabala 1986: 255 (part), pl. 1 fig. a, not text-fig. 62. — Zabala & Maluquer 1988 (part): 80, text-fig. 86, pl. 3 fig. a, not text-fig. 87. — Templado et al . 2002: 202 (part or whole). Non Hincksina flustroides – Fernández Pulpeiro 1983: 472 . — López de la Cuadra & García Gómez 1988: 23 ; 1994: 110 (part or whole). — Haya & Anadón 1989: 111 , fig. 2. — López de la Cuadra 1991: 94 (part or whole), pl. 7 figs c–d. — Reverter-Gil & Fernández-Pulpeiro 2001: 59 . — Reverter-Gil et al . 2019a: 10 . — Templado et al . 2006: 207 (part or whole). Material examined MEDITERRANEAN SPAIN • 1 colony on stone; Columbretes Islands , Plácer de la Barra Alta ; 39.83067° N , 0.53867° E ; stn 267B; depth 0–32 m ; 11 Jul. 1994 ; Fauna Ibérica III exped.; MNCN 25.03/1490 • 1 ovicelled colony, with more species; Columbretes Islands , N of Columbrete Grande ; 39.90000° N , 0.68500° E ; depth 30 m ; 1996; Fauna Ibérica IV exped.; MNCN 25.03/2106 • 1 colony with more species; same collection data as for preceding; MNCN 25.03/2417 • 1 colony with more species, on algae ; same collection data as for preceding; MNCN 25.03/2424 • 1 small ovicelled colony ; Columbretes Islands , south Horadada ; no coordinates; depth 10 m ; 1996 ; Fauna Ibérica IV exped.; MNCN 25.03/3092 • 1 colony with more species; Columbretes Islands , S of Horadada ; 39.87283° N , 0.66950° E ; stn 281B2; depth 20 m ; 17 Jul. 1996 ; Fauna Ibérica IV exped.; MNCN 25.03/3325 • 1 colony with few, small spines, with more species; Columbretes Islands , near Islote Cerquero ; 39.85017° N , 0.67317° E ; depth 5 m ; 1996 ; Fauna Ibérica IV exped.; MNCN 25.03/3350 • 1 colony with few, fine spines, with more species on a concretion; Balearics , SW of Menorca Island ; 39.79667° N , 04.29000° E ; stn 217B14; depth 15–20 m ; 30 Jun. 1994 ; Fauna Ibérica III exped.; MNCN 25.03/879 • 1 colony on stone, with more species; Balearics , SW of Menorca Island ; 39.79667° N , 04.29000° E ; stn 217B14; depth 15–20 m ; 30 Jun. 1994 ; Fauna Ibérica III exped.; MNCN 25.03/1033 • 1 ovicelled colony ; Balearics , SW of Menorca Island ; 39.79667° N , 04.29000° E ; stn 217B14; depth 15–20 m ; 30 Jun. 1994 ; Fauna Ibérica III exped.; MNCN 25.03/4153 • 1 colony with few, small spines; Balearics , Menorca Island , Cavallería Cape ; 40.09333° N , 04.07333° E ; depth 24 m ; 1994 ; Fauna Ibérica III exped.; MNCN 25.03/1022 • one colony with few, small spines, together more species; same collection data as for preceding; MNCN 25.03/1114 • 1 colony with more species; Balearics , SW of Mallorca Island ; 39.46067° N , 02.47367° E ; stn 230B18; depth 35–43 m ; 4 Jul. 1994 ; Fauna Ibérica III exped.; MNCN 25.03/816 • 1 large, ovicelled colony with more species; same collection data as for preceding; MNCN 25.03/841 • 1 small, eroded colony with more species; same collection data as for preceding; MNCN 25.03/1001 • 1 colony with more species on a polychaete tube; Balearics , north of Mallorca Island , Pollença Bay ; 39.92233° N , 03.17817° E ; stn 189A; depth 33–47 m ; 26 Jun. 1994 ; Fauna Ibérica III exped.; MNCN 25.03/924 • 1 large, ovicelled colony , with more species; Balearics, Espardell Island ; 38.79833° N , 01.48250° E ; depth 20–25 m ; 1994; Fauna Ibérica III exped.; MNCN 25.03/1346 • 1 large, ovicelled colony , with more species on a stone; Murcia , Hormigas Islands , Bajo de Fuera ; 37.66450° N , 0.63500° W ; stn 298B10; depth 15 m ; 21 Jul. 1996 ; Fauna Ibérica IV exped.; MNCN 25.03/2639 ( Fig. 6 ) • 1 colony , with more species; same collection data as for preceding; MNCN 25.03/2647 • 1 colony , with more species; same collection data as for preceding; MNCN 25.03/2653 . Fig. 6. Hincksina synchysia Berning et al ., 2021 (MNCN 25.03/2639), Hormigas Islands (Murcia, Mediterranean Spain). A . Autozooids and avicularia. B . Ovicells immersed in autozooids and in avicularia. Table 4. Measurements (in mm) of Hincksina synchysia Berning et al. , 2021 . Abbreviations: N = number of measurements; SD = standard deviation.

Mean	SD	Minimum	Maximum	N
Autozooid length	0.429	0.0515	0.342	0.528	25
Autozooid width	0.266	0.0273	0.219	0.328	25
Opesia length	0.365	0.0310	0.296	0.417	25
Opesia width	0.220	0.0227	0.173	0.266	23
Zooid avic. length	0.205	0.0298	0.153	0.247	12
Zooid avic. width	0.168	0.0326	0.118	0.215	12
Opesia. avic. length	0.175	0.0262	0.135	0.226	21
Opesia. avic. width	0.103	0.0208	0.073	0.139	21
Ovicell length	0.100	0.0078	0.086	0.112	11
Ovicell length	0.162	0.0185	0.138	0.202	11

Remarks Berning et al. (2021) described H. synchysia for several previous records of H. flustroides from the Mediterranean. At least part of the material from Catalonia reported by Zabala (1986) as H. flustroides does correspond to H. synchysia . This material was compiled later by Zabala & Maluquer (1988) , a record that according to Berning et al . (2021) corresponds to H. synchysia . All the material revised by us stemming from Spanish Mediterranean waters (Columbretes Islands, Balearics Islands, Hormigas Islands) and labelled as H. flustroides actually corresponds to H synchysia (see Material examined and Fig. 6 ). This includes the record of H. flustroides by Templado et al . (2002 , part or whole) from Columbretes Islands. Other records from the Iberian Mediterranean, such as those by Zabala & Gili (1985) (Balearics), Calvín Calvo (1986) ( Murcia ), or Madurell et al . (2013) ( Catalonia ), very probably also correspond to H. synchysia because material of the species has been detected in these areas. Nonetheless, other species might be involved as well, so new sampling in these areas is essential. Comparing with the measures of Berning et al . (2021) , based on two samples from Portofino, we find that the autozooids are smaller in our material, while the avicularia are larger. In contrast, the record of H. flustroides from Alboran Island made by Templado et al . (2006) does in fact correspond to Hincksina chimaera sp. nov. and to Hincksina longispinosa Harmelin & d’Hondt, 1992 (see below). In any case, we cannot be certain whether we have revised all of the original material cited by these authors. At the same time, the record of the same species by Álvarez (1992) in the same area is doubtful because the original paper does not include a description or figures, whilst the original sample (MNCN 25.03/223) only contains some small, eroded fragments impossible to identify at species level. Finally, the records of H. flustroides from the Strait of Gibraltar area in López de la Cuadra & García Gómez (1988, 1994) and López de la Cuadra (1991) really correspond to Hincksina elephantina sp. nov. , at least in part (see below). Therefore, at present, H. synchysia seems to be absent from the Alboran Sea, the Strait of Gibraltar area and the whole Atlantic Iberian coast, so it perhaps must be confined to the inner part of the western Mediterranean ( Fig. 12B ).