Table 1. Taxa included in the final comparative data set.

Information for OTUs include number of sequences (N), their nearest BLAST hit (except for S. alata), nucleotide diversity (π), Watterson’s theta (Θ_w) per site, Tajima’s D, and G_ST. Significance of G_ST and Tajima’s D (D following a beta distribution; Tajima, 1989) at α = 0.05 is indicated with an asterisk (⋆).

Taxa	N	BLAST	π	Θw	Tajima’s D	GST
Fungi1	52	Cladosporium sp. (Fungi)	0.0088	0.0244	−2.1585⋆	0.1099⋆
Fungi2	51	Fusarium annulatum (Fungi)	0.0130	0.0299	−2.0211⋆	0.2335
Fungi3	22	Curvularia sp. (Fungi)	0.0157	0.0272	−1.7148	0.1419
Fungi4	2,507	Candida saitoana (Fungi)	0.0059	0.0918	−2.6902⋆	0.0025
Fungi5	97	Candida saitoana (Fungi)	0.0072	0.0203	−2.0520⋆	0.0514
Fungi6	168	Candida saitoana (Fungi)	0.0090	0.0187	−1.6674	0.0167
Fungi7	84	Candida saitoana (Fungi)	0.0088	0.0217	−2.0016⋆	0.0711
Fungi8	57	Candida quercitrusa (Fungi)	0.0134	0.0341	−2.0901⋆	0.1150
Fungi9	30	Candida saitoana (Fungi)	0.0010	0.0053	−2.3512⋆	0.0991
Fungi10	54	Candida saitoana (Fungi)	0.0050	0.0183	−2.3958⋆	0.0788
Fungi11	189	Mucor circinelloides (Fungi)	0.0078	0.0307	−2.3694⋆	0.0090
Fungi12	14	Uncultured soil fungus (Fungi)	0.0087	0.0100	−0.6488	0.2805
Fungi13	40	Uncultured fungus (Fungi)	0.0103	0.0125	−0.6810	0.2494
Fungi14	766	Fungal endophyte (Fungi)	0.0117	0.0586	−2.4374⋆	0.0052
Fungi15	15	Nigrospora sphaerica (Fungi)	0.0106	0.0188	−1.8028⋆	0.0451
Amoebozoa1	227	Fuligo septica (Amoebozoa)	0.0042	0.0347	−2.6856⋆	0.0411
Alveolata1	18	Leptopharynx costatus (Alveolata)	0.0182	0.0324	−1.8094⋆	0.0418
Nematoda1	79	Nematoda sp. (Nematoda)	0.0150	0.0317	−1.8654⋆	0.4101
Nematoda2	154	Nematoda sp. (Nematoda)	0.0130	0.0174	−0.9456	0.2359
Nematoda3	21	Nematoda sp. (Nematoda)	0.0188	0.0170	0.2858	0.0624
Insect1	61	Brachymyrmex depilis (Insecta)	0.0122	0.0285	−2.0101⋆	0.0346
Insect2	37	Solenopsis xyloni (Insecta)	0.0208	0.0409	−1.8296⋆	0.0723
Insect3	41	Paratrechina hystrix (Insecta)	0.0081	0.0208	−2.1225⋆	0.2694
Mite1	828	Ovanoetus sp. (Acari)	0.0086	0.0620	−2.5727⋆	0.0150⋆
Mite2	30	Ovanoetus sp. (Acari)	0.0152	0.0348	−2.1831⋆	0.2911
Mite3	1,071	Anoetus sp. (Acari)	0.0071	0.0678	−2.6276⋆	0.0101⋆
Mite4	56	Anoetus sp. (Acari)	0.0114	0.0242	−1.7765	0.0437
Mite5	34	Anoetus sp. (Acari)	0.0176	0.0219	−0.7551	0.1516
Mite6	50	Anoetus sp. (Acari)	0.0111	0.0197	−1.4951	0.0427
Mite7	45	Anoetus sp. (Acari)	0.0049	0.0098	−1.5594	0.0147
Unknown	66	No BLAST Match	0.0059	0.0198	−2.2971⋆	0.3539
Host plant	79	Sarracenia alata	0.0028	0.0034	−0.4521	0.8483⋆