Table S1.

Correlation between the fraction of species per lineage possessing TEs resulting from a transfer and the divergence time with the other lineage involved in the transfer

Lineage*	No. of transfers†	Mean fraction of species involved‡	Coefficient§	P value§
Drosophila	513	3.7/25	0.039	0.810
Bactrocera	736	2.3/5	0.126	0.999
Lasius	716	3.8/18	0.111	0.999
Heliconius	544	1.3/5	−0.080	0.052
Apis	86	3.6/20	−0.011	0.460
Anopheles	492	1.7/12	0.044	0.836
Musca	210	1.4/7	0.016	0.590
Glossina	28	2.2/6	0.137	0.756

^*The correlation was tested separately for the eight lineages comprising at least five species and involved in at least 10 inferred HTT events. Lineages are named after a representative genus (Fig. S1).

^†Transfers may represent either direct or indirect HTT (main text), and a given transfer may be used in more than one correlation test (row).

^‡The denominator is the number of species in each lineage.

^§Correlations were assessed by Spearman rank tests, and a P value corresponds to the risk of inferring a negative correlation while there is none.