Table 1.

Illumina sequencing data overview.

Pool number	RNA pools useda		#Ticks	Adult/nymph/larva	Location	#Reads	#Viral reads	#Contigs	#Viral contigs
S1	142 144	147 150	4	4 Adults	Moerbeke	62,886,446	977	4,874	13
S2	4 6	87 91	4	4 Adults	Chimay Gierle	65,898,424	1,576	6,918	16
S3	140 162	168	3	3 Adults	Heverlee Torhout	48,976,538	6,621	25,558	24
S4	143 146	149	3	3 Adults	Moerbeke	68,520,456	12,952	65,273	65
S5	89 90	95	3	3 Adults	Gierle	68,966,000	750,760	6,771	94
S6	129 159	161	7	3 Nymphs 4 Larvae	Heverlee Moerbeke	63,439,638	149,654	74,219	693
S7	47 48	51 56	12	12 Nymphs	Chimay	76,725,768	7,301	15,224	66
S8	107 110	114 126	12	12 Nymphs	Chimay Gierle	58,129,700	366,933	53,572	132
S9	106 110 111	112 113	15	15 Nymphs	Gierle	83,201,118	293,361	35,840	842
S10	39 44 45	135 139	13	13 Nymphs	Chimay Heverlee	70,097,012	47,741	15,718	96

^aSee Supplementary Table S1.