Table 3 Concordance

Table 1. Distribution of rarity among four groups of conservative prairie and savanna-requiring insects within the Chicago Wilderness Region.
Species groups	RARITY CLASSES
Species groups	common ← → rare
n = 411*	1	2	3	4	5
	Number of species in each rarity class
Homoptera	9	9	30	20	50
butterflies	2	2	12	8	20
moths	10	15	41	53	89
other spp**	1	2	12	6	20
* 390 extant and 21 extirpated species are included in this analysis ** Dragonflies, damselflies, grasshoppers, katydids , walkingsticks, and beetles Kendall's coefficient of concordance W = 0.91 ; P < 0.025