Two new species of Crassitegula (Sebdeniaceae, Sebdeniales, Rhodophyta) extend the diversity and biogeographic range of the genus to the Caribbean and Mediterranean seas Author Schneider, Craig W. Department of Biology, Trinity College, Hartford, CT 06106, USA. cschneid@trincoll.edu Author Gall, Line Le Institut de Systématique, Évolution, Biodiversité (ISYEB - UMR 7205 - CNRS, MNHN, UPMC, EPHE), Muséum national d’Histoire naturelle, Sorbonne Universités, 57 rue Cuvier, CP 39, F- 75005, Paris, France. line.le-gall@mnhn.fr text European Journal of Taxonomy 2025 2025-02-18 976 194 207 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2789/12751 journal article 308265 10.5852/ejt.2025.976.2789 83b1d65b-24ba-47be-8383-cbbc7a6b1ad2 2118-9773 14922241

Table 1 (continued on next two pages). Collection details and GenBank accession numbers for specimens included in analyses. Specimens sequenced for this study are shown in boldface type.

Species	Voucher	Collector(s) / Collection date	Collection site	COI-5P	LSU rDNA
Asteromenia bermudensis G.W.Saunders, C.E.Lane, C.W.Schneid. & Kraft	GWS001252	G. Saunders / 13 Nov. 2001	West Whale Bay, Southampton, Bermuda Islands, Bermuda	AY970560	DQ068297
Crassitegula bouchetii L.Le Gall & C.W.Schneid. sp. nov.	FRA1944 (Holotypus)	L. Le Gall, Y. Turpin, R. Moolenbeek, K. Netchy, E. Vassard, J. Espinosa, A. Antonioli / 21 May 2012	Marina de Rivière Sens, Basse-Terre, Guadeloupe, West Indies, Caribbean	PQ213414	PQ213421
Crassitegula garyi L.Le Gall & C.W.Schneid. sp. nov.	LLG3706 (Holotypus)	L. Le Gall, J. Utge / 13 Apr. 2011	Capo dell’Armi, Reggio Calabria, Italy	PQ213415	PQ213422
	LLG2562	L. Le Gall, J. Utge / 7 Jun. 2009	Montremian, Port-Cros, Hyères, France, Mediterranean Sea	PQ213416	PQ213423
	LLG5005	L. Le Gall / 7 Jun. 2013	Agay-Saint Raphaël, Var, French Riviera, Mediterranean Sea	PQ213419	PQ213424
	LLG6821	B. Gouillieux, L. Le Gall, A. Le Viavant, W. Bay-Nouailhat, E. Vassard, F. Otero Ferrer / 16 Oct. 2020	Deep reef, southeast of the Cerbicale Islands, Corsica, France, Mediterranean Sea	PQ213417	–
	LLG6822	B. Gouillieux, L. Le Gall, A. Le Viavant, W. Bay-Nouailhat, E. Vassard, F. Otero Ferrer / 16 Oct. 2020	Deep reef, southeast of the Cerbicale Islands, Corsica, France, Mediterranean Sea	PQ213418	–
Crassitegula imitans G.W.Saunders & Kraft	GWS002089 (Holotypus)	G. Saunders / 3 Feb. 2004	Malabar Reef, Lord Howe Island, New South Wales, Australia	JN641182	–
	GWS001076	G. Kraft, G. Saunders / 16 Mar. 2001	Noddy Island, Lord Howe Island, New South Wales, Australia	JN641180	DQ343700
	GWS002026	R. Withall / 30 Jan. 2004	Yellow Rock, Lord Howe Island, Australia	HM915970	–
	GWS002071	G. Saunders / 2 Feb. 2004	Ned’s Beach, Lord Howe Island, Australia	JN641181	–
	GWS023521	G. Saunders, K. Dixon, R. Withall / 24 Nov. 2010	Algae Hole North, Lord Howe Island, Australia	JN641792	–
Crassitegula laciniata C.W.Schneid., Popolizio & C.E.Lane	BDA0134	C. Schneider, C. Lane, D. McDevit, T. Popolizio / 20 Aug. 2010	Middle Buoy, Eastern Blue Cut Channel, Bermuda	KF561827	–
	BDA1132	T. Popolizio / 28 May 2012	Hog Reef, north of Bermuda Islands, Bermuda	KF561829	–
	BDA1134	T. Popolizio / 28 May 2012	Hog Reef, north of Bermuda Islands, Bermuda	KF561831	–
	BDA1305 (Holotypus)	T. Popolizio / 11 Aug. 2012	Hog Breaker, north of Bermuda Islands, Bermuda	KF561832	–
	BDA1306 (Isotypus)	T. Popolizio / 11 Aug. 2012	Hog Breaker, north of Bermuda Islands, Bermuda	KF561833	KF761654
Crassitegula walsinghamii C.W.Schneid., C.E.Lane & G.W.Saunders	GWS001245 (Isotypus)	G. Saunders / 12 Nov. 2001	Walsingham Pond, Bermuda Islands, Bermuda	JN641185	EF033623
	GWS001260	G. Saunders / 16 Nov. 2001	Walsingham Pond, Bermuda Islands, Bermuda	JN641184	–
Crassitegula sp. 1 REU	JPQ1062	T. Rauby / 30 Oct. 2019	Lapérouse Bank, Réunion Island, Indian Ocean	PQ733018	–
Crassitegula sp. 1 WA	GWS025666	K. Dixon, R. Dixon, G. Belton / 18 Nov. 2010	The Basin, Rottnest Island, Western Australia, Australia	JN641183	JN602192
Cryptocallis dixoniorum Huisman & G.W.Saunders	GWS020687	J. Huisman / 20 Oct. 2011	Brue Reef, Kimberley, Western Australia, Australia	MG894157	–
	GWS020689	J. Huisman / 22 Oct. 2011	Mavis Reef, Kimberley, Western Australia, Australia	MG894138	–
	GWS020688	J. Huisman / 23 Oct. 2011	Brue Reef, Kimberley, Western Australia, Australia	MG894137	–
	GWS025841	K. Dixon / 11 Dec. 2010	South Balatasan, Oriental Mindoro, Philippines	JN641191	JN602193
Dictyothamnion saltatum A.Millar	G0231	A. Millar, A. Wright / 12 Aug. 1994	Split Solitary Island, New South Wales, Australia	JN641186	EU624161
Fryeella gardneri (Setchell) Kylin	GWS004232	G. Saunders, B. Clarckston, D. McDevit / 21 Jun. 2006	Saxe Point, Victoria, British Columbia, Canada	GQ497306	–
	G0335	T. Schaeffer / 8 Jul. 1995	San Juan Islands, north side Turn Island, Washington USA	–	EF033622
Halopeltis sp. 1 WA	G0402	G. Kraft, G. Saunders / 10 Nov. 1995	Northeast of White Island, Easter Group, Abrolhos Islands, Australia	EF101939	DQ343679
Hymenocladiopsis prolifera (Reinsch) M.J.Wynne	CCMP455	M. Hoban	Antarctica, Center for Culture of Marine Phytoplankton	HQ919249	EU624144
Lesleigha hawaiiensis Kraft & G.W.Saunders	G0436	G. Kraft / 20 Jun. 1996	Maunalua By, Oahu, Hawaii, USA	JN641187	DQ343699
Lesleigha howensis Kraft & G.W.Saunders	GWS002087	G. Saunders / 3 Feb. 2004	Malabar Reef, Lord Howe Island, New South Wales, Australia	HM915995	–
	GWS002088 (Holotypus)	G. Saunders / 3 Feb. 2004	Malabar Reef, Lord Howe Island, New South Wales, Australia	JN641188	JN602198
	GWS022878	G. Saunders, K. Dixon, R. Withall / 22 Nov. 2010	Malabar Reef, Lord Howe Island, New South Wales, Australia	JN641190	–
	GWS022923	G. Saunders, K. Dixon, R. Withall / 22 Nov. 2010	Malabar Reef, Lord Howe Island, New South Wales, Australia	JN641189	–
Lesleigha yamadae (Okamura & Segawa)	GWS018503	G. Saunders, H.-G. Choi / 19 May 2010	Big Munseom Island, Jeju, South Korea	JN641192	JN602195
G.W.Saunders & Kraft	GWS018683	G. Saunders, H.-G. Choi / 19 May 2010	Big Munseom Island, Jeju, South Korea	HQ544145	–
	GWS018686	G. Saunders, H.-G. Choi / 19 May 2010	Big Munseom Island, Jeju, South Korea	HQ544148	–
Perbella minuta (Kylin) Filloramo & G.W.Saunders	GWS015600	F. Scott / 16 Mar. 2010	Deep reef west of Verona Sands, mouth of Huon River, Tasmania, Australia	HQ919321	–
	G0273	G. Kraft / 6 Jan. 1995	Warrnambool, Victoria, Australia	–	DQ068295
Rhodymenia wilsonis (Sonder) G.W.Saunders	GWS002530	G. Saunders / 17 Jan. 2005	Warrnambool, Victoria, Australia	HM033153	HM033182
Sebdenia flabellata (J.Agardh)	CL031201	C. Schneider, C. Lane / 3 Apr. 2003	Green Bay, Harrington Sound, Bermuda	JN641197	JN602196
P.G.Parkinson	GWS011903	C. Schneider / 3 Apr. 2003	Green Bay, Harrington Sound, Bermuda	JN641196	–
Sebdenia monardiana (Mont.) Berthold	LLG3983	J. Utge, L. Le Gall/ 21 Apr. 2011	Santa Maria la Scala, Acireale, Sicily, Italy	PQ213420	PQ213425
Sebdenia cf. polydactyla (Børgesen)	GWS002027	R. Withall / 30 Jan. 2004	Yellow Rock, Lord Howe Island, Australia	HM915971	–
M.Balakrishnan	GWS023452	G. Saunders, K. Dixon, R. Withall / 24 Nov. 2010	Algae Hole North, Lord Howe Island, Australia	JN641198	–
	GWS023509	G. Saunders, K. Dixon, R. Withall / 24 Nov. 2010	Algae Hole North, Lord Howe Island, Australia	JN641199	–
Sebdenia sp. 1 LH	GWS002074	G. Saunders / 2 Feb. 2004	Middle Beach, Lord Howe Island, New South Wales, Australia	JN641194	JN602197
	GWS023442	G. Saunders, K. Dixon, R. Withall / 24 Nov. 2010	Algae Hole North, Lord Howe Island, Australia	JN641193	–
	G0262	A. Millar, P. Richards / 11 Dec. 1994	Clayton Reef, Lord Howe Island, Australia	HM916189	–
Sebdenia sp. 2 WA	G0192	G. Saunders, G. Kraft / 2 Feb. 1994	Roe Reef, Rottnest Island, Western Australia, Australia	JN641195	–