Table 1. Annualized damage in U.S. $1,000,000 associated with each guild and cost category.

Guild	Federal Government Expenditures	Local Government Expenditures	Household Expenditures	Residential Property Value Loss	Forest Landowner Timber Loss
BORERS (N = 71, Ni = 14)
Poster: emerald ash borer damages ($106)	38	850	350	380	60
Total damage ($106)	92 [62–97]	1700 [1100–1900]	760 [460–820]	830 [510–900]	130 [81–150]
P>poster (%)	3.5 [0.47–8.1]	3.4 [0.43–7.2]	3.4 [0.39–7.6]	3.3 [0.41–7.8]	3.3 [0.42–7.5]
SAP FEEDERS (N = 192, Ni = 19)
Poster: hemlock woolly adelgid damages ($106)	4.3	66	44	100	1.1
Total damage ($106)	14[6.6–15]	170 [85–190]	130 [62–140]	260 [130–290]	4.2 [2.1–4.6]
P>poster (%)	1.1 [0.14–2.8]	1.1 [0.12– .8]	1.1 [0.13– .1]	1.0 [0.14–2.5]	1.1 [0.15–2.9]
FOLIAGE FEEDERS (N = 155, Ni = 25)
Poster: gypsy moth damages ($106)	33	50	46	120	4.6
Total damage ($106)	110 [52–120]	170 [75–180]	160 [72–180]	410 [190–450]	18 [8.2–20]
P>poster (%)	1.3 [0.21–3.4]	1.4 [0.20–3.6]	1.2 [0.21–3.1]	1.6 [0.22–4.7]	1.3 [0.23–3.4]

The poster pest damage was calculated for each cost category (See Appendix S1 for detailed methods). We report the posterior mean of total damage (see Figure 1) and the probability that a newly introduced pest will be as damaging or more damaging than the poster pest for that cost category (P>poster). N is the total number of species in the guild and N_i shows the number of intermediate pests in each guild. The 90% Bayesian credible intervals are in brackets.