Big Horn County, Montana, United States

Aeshna interrupta (Variable Darner)
Aeshna palmata (Paddle-tailed Darner)
Amphiagrion abbreviatum (Western Red Damsel)
Anax junius (Common Green Darner)
Archilestes grandis (Great Spreadwing)
Argia emma (Emma's Dancer)
Argia fumipennis (Variable Dancer)
Enallagma anna (River Bluet)
Enallagma annexum (Northern Bluet)
Enallagma boreale (Boreal Bluet)
Enallagma carunculatum (Tule Bluet)
Enallagma civile (Familiar Bluet)
Enallagma ebrium (Marsh Bluet)
Enallagma praevarum (Arroyo Bluet)
Gomphurus externus (Plains Clubtail)
Hetaerina americana (American Rubyspot)
Ischnura cervula (Pacific Forktail)
Ischnura perparva (Western Forktail)
Ischnura verticalis (Eastern Forktail)
Lestes congener (Spotted Spreadwing)
Lestes unguiculatus (Lyre-tipped Spreadwing)
Leucorrhinia intacta (Dot-tailed Whiteface)
Libellula forensis (Eight-spotted Skimmer)
Libellula pulchella (Twelve-spotted Skimmer)
Libellula quadrimaculata (Four-spotted Skimmer)
Plathemis lydia (Common Whitetail)
Sympetrum corruptum (Variegated Meadowhawk)
Sympetrum costiferum (Saffron-winged Meadowhawk)
Sympetrum internum (Cherry-faced Meadowhawk)
Sympetrum obtrusum (White-faced Meadowhawk)
Sympetrum pallipes (Striped Meadowhawk)
Sympetrum semicinctum (Band-winged Meadowhawk)

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