Table 3.

Pairwise comparisons of abundances of individual bacterial OTUs (operational taxonomic units) between host plant (soybean or maize) and sample type (midgut or regurgitant) in fall armyworm (Spodoptera frugiperda). Bold values indicate significant (p < 0.05) differences. OTUs were selected using a SIMPER analysis.

OTU	Maize		Soybean		Plant		Sample type (maize)		Sample type (soybean)
	Midgut	Regurgitant	Midgut	Regurgitant	W	p-value	W	p-value	W	p-value
OTU001: Enterococcus	27.48 ± 10.8	9.82 ± 6.2	32.94 ± 5.95	15.43 ± 2.69	427	0.0055	185	0.0449	98	0.0006
OTU002: Enterobacteriaceae	39.93 ± 10.9	55.15 ± 9.46	22.25 ± 5.52	27.74 ± 9.76	253	0.0387	131	0.2913	59	0.3823
OTU003: Arthrobacter	5.33 ± 4.66	4.14 ± 3.1	24.49 ± 4.97	34.01 ± 7.78	455	0.0003	159.5	0.5968	50	0.065
OTU004: Rhizobium	6.87 ± 3.44	2.31 ± 0.85	0.91 ± 0.36	1.24 ± 0.63	348	0.5944	143	0.7125	57	0.2786
OTU005: Pseudomonas	0.97 ± 0.4	1.44 ± 0.58	0.07 ± 0.03	0.09 ± 0.05	192	<0.0001	140	0.5899	65	0.798
OTU008: Methylobacterium	1.46 ± 0.64	1.73 ± 0.81	0.04 ± 0.02	0.03 ± 0.01	222	0.0028	155.5	0.7679	65	0.798
OTU011: Bradyrhizobium	0.98 ± 0.38	0.91 ± 0.42	0.04 ± 0.03	0.01 ± 0	191	<0.0001	158	0.6707	61.5	0.5169
OTU015: Unclassified	3.85 ± 2.42	1.25 ± 0.47	0.02 ± 0.01	0.01 ± 0.01	181.5	<0.0001	157	0.7122	58	0.2821
OTU016: Ochrobactrum	1.43 ± 0.79	0.5 ± 0.16	0.76 ± 0.33	1.15 ± 0.61	328	1.000	154	0.8426	59	0.3667
OTU018: Microbacterium	0.48 ± 0.25	1.25 ± 0.7	0.56 ± 0.17	0.7 ± 0.31	364.5	0.3207	128	0.2184	62	0.5737
OTU033: Bacillus	0.02 ± 0.02	0.29 ± 0.2	2.1 ± 1.56	2.11 ± 1.39	468.5	<0.0001	116.5	0.3205	63	0.6454