TABLE 1. List of samples used for the phylogenetic analyses, with geographical origin and GenBank accession numbers for each molecular marker. Asterisks (*) indicate sequences generated for this study.

Sample	Country	12SrDNA	16SrDNA	COI	ITS2
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Ixodes scapularis	U.S.A	KU321830	L43877	KY322738	X63868
Ixodes pacificus	U.S.A	L43902	AF549854	M360338	L22278
Ixodes pararicinus	Argentina		KY610209	MN233652
Ixodes pararicinus	Argentina	OQ550396*			OQ550384*
Ixodes pararicinus	Argentina	OQ550395*			OQ550385*
Ixodes fuscipes	Uruguay		KU894406
Ixodes fuscipes	Uruguay			OQ536433*
Ixodes fuscipes	Uruguay	OQ550390*			OQ550387*
Ixodes fuscipes	Uruguay				OQ550386*
Ixodes affinis	Panama			KF200161
Ixodes affinis	Costa Rica	MT906454
Ixodes affinis	Panama	OQ550391*	OQ550401*	OQ539547*	OQ550382*
Ixodes affinis	Costa Rica	OQ550393*	OQ550403*	OQ539525*	OQ550383*
Ixodes affinis	Costa Rica	OQ550392*	OQ550402*	OQ538343*	OQ550383*
Ixodes affinis	Costa Rica	OQ550394*	OQ550404*	OQ545588*
Ixodes affinis	Costa Rica		OQ550400*
Ixodes chacoensis	Argentina	OQ550388*		OQ539437*	OQ550381*
Ixodes chacoensis	Argentina			OQ539526*
Ixodes chacoensis	Argentina	OQ550389*	OQ550399*
Ixodes chacoensis	Argentina		OQ550397*
Ixodes chacoensis	Argentina		OQ550398*
Ixodes chacoensis	Argentina				OQ550379*
Ixodes chacoensis	Argentina				OQ550380*
Ixodes keiransi	U.S.A		OQ550405*	MT906039
Ixodes keiransi	U.S.A		OQ550406*		MT880314
Ixodes keiransi	U.S.A		OQ550408*	MT906040	MT880312
Ixodes keiransi	U.S.A	MT898582	OQ550412*		MT880313
Ixodes keiransi	U.S.A		OQ550409*
Ixodes keiransi	U.S.A	MT898579	OQ550407*
Ixodes keiransi	U.S.A		OQ550411*
Ixodes keiransi	U.S.A		OQ550410*
Ixodes keiransi	U.S.A			MT906038
Ixodes scapularis	U.S.A	KU321830	L43877	KY322738	X63868
Ixodes pacificus	U.S.A	L43902	AF549854	M360338	L22278