Appendix

Percent occurrences of insect taxa that were present in 90% of sample sites (e.g., core taxa for

that data set) in at least one data set. Taxa that were core taxa in any region or year are included

and bold values indicate they were designated as cores.

Taxon / Alabama / Alaska / Maine / Maryland / New York / Pacific
Coast
2000 / 2001 / 2000 / 2001 / 2002
Ephemeroptera
Acentrella / - / - / - / 13 / 5 / 90 / 93 / 60 / 18
Baetis / 100 / 84 / 85 / 43 / 28 / 77 / 87 / 83 / 92
Cheumatopsyche / 100 / - / 50 / 97 / 91 / 80 / 93 / 93 / -
Drunella / 11 / - / - / - / 2 / 93 / 97 / 97 / 68
Epeorus / 67 / - / 45 / 7 / 3 / 10 / 100 / 90 / 77
Ephemerella / 89 / 19 / 70 / 79 / 80 / 93 / 100 / 93 / -
Hydropsyche / 100 / - / 95 / 96 / 86 / 93 / 100 / 97 / 45
Isonychia / 100 / - / 5 / 4 / 11 / 60 / 57 / 47 / -
Leucrocuta / 100 / - / - / 16 / 23 / 67 / 40 / 43 / 2
Paraleptophlebia / 89 / - / 65 / 49 / 51 / 77 / 93 / 83 / 12
Pseudocloeon / 100 / - / - / - / - / - / - / - / -
Stenacron / 100 / - / - / 1 / 3 / 33 / 3 / 27 / -
Stenonema / 100 / - / 45 / 75 / 75 / 50 / 60 / 70 / -
Plecoptera
Acroneuria / 100 / - / 30 / 9 / 6 / 7 / 17 / 10 / -
Allocapnia / 100 / - / 35 / - / - / - / - / - / -
Amphinemura / 100 / - / - / 54 / 74 / 13 / 33 / 17 / -
Calineuria / - / - / - / - / - / - / - / - / 80
Leuctra / 100 / - / - / 29 / 52 / 33 / 87 / 60 / -
Megaloptera
Nigronia / 100 / - / 20 / 42 / 36 / 7 / 7 / 7 / -
Trichoptera
Dolophilodes / 100 / - / 10 / 13 / 9 / 53 / 80 / 30 / -
Glossosoma / 100 / 3 / 20 / 44 / 29 / 3 / 10 / 3 / 53
Micrasema / 100 / - / 15 / - / - / 10 / 23 / 10.0 / 27
Polycentropus / 100 / - / 10 / 7 / 2 / 27 / 43 / 67 / 17
Rhyacophila / 100 / 9 / 95 / 29 / 28 / 37 / 67 / 57 / 100
Coleoptera
Ectopria / 100 / - / - / 3 / - / 7 / 3 / 7 / -
Optioservus / 100 / - / 25 / 73 / 80 / 43 / 63 / 73 / 55
Oulimnius / 100 / - / - / 85 / 89 / 30 / 23 / 20 / -
Promoresia / 100 / - / 2 / 4 / 6 / 13 / 13 / 23 / -
Psephenus / 100 / - / - / 32 / 31 / 50 / 60 / 60 / -
Diptera
Antocha / 100 / - / 25 / 96 / 77 / 67 / 80 / 93 / 58
Simulium / - / 15 / - / 91 / 89 / 70 / 93 / 27 / 80
Stenelmis / 100 / - / - / 60 / 63 / 60 / 60 / 47 / -
Tipula / 100 / 56 / 55 / 53 / 48 / 3 / - / 3 / 1

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