Table 1. Localities, GenBank codes (*sequences produced in this study) and number of specimens used in molecular analysis for each species and for each molecular marker.

Species	Locality	GenBank code		Number of specimens	Voucher
		16S	ITS1+ITS2
H. antarcticus	Copacabana and Arctowski Sta (King George Island, Antarctica)	FJ874775*	FJ858787*	10	MZUSP 1558
H. antarcticus	Los Molinos (Valdivia, Chile)	AY845340	FJ874777*	10	MZUSP 1560
“M. limopsicola”	Jubany Sta (King George Island, Antarctica)	EU294003	FJ874779*	2 samples of the original culture	G. Jarms culture
H. “sanjuanensis”	San Juan Island (Washington, USA)	HM022151*AY845339	HM022145*HM022143*	11	USNM 1106935USNM 1073340
H. “sanjuanensis”	Franklin Point (California, USA)	HM022149*HM022150*	FJ874776*HM022144*	31	USNM 1106653USNM 1073341
H. stejnegeri	Muroran (Hokkaido, Japan)	HM022152*	HM022146*	1	USNM 1106655
H. stejnegeri	Akkeshi (Hokkaido, Japan)	HM022153*	HM022147*	1	KUNHM 002673-B
H. tenuis	Muroran (Hokkaido, Japan)	HM022154*	HM022148*	1	USNM 1106651
D. africana	False Bay (South Africa)	AY845341	HM022142*	1	none
L. janetae	East Pacific Rise (8°36.745N, 104°12.740W)	AY845342	FJ874778*	1	FMNH 10329