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Denver-Boulder Metro Area: Bugs

This guide contains spiders, bees, wasps, ants, beetles, dragonflies, grasshoppers, flies and other bugs that can be found in the Denver-Boulder Metro Area, including Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas, and Jefferson Counties.

Slate Brown Dun 1
Epeorus longimanus
Iron Blue Dun 2
Baetis bicaudatus
Speckled Wing Dun 3
Callibaetis ferrugineus hageni
Giant mayfly 4
Hexagenia limbata
Trico Spinner 5
Tricorythodes explicatus
Pale Morning Dun
Ephemerella excrucians
Western Green Drake 6
Drunella grandis

Edited by Colorado Parks and Wildlife, some rights reserved (CC BY-SA)

Photo Credits

  • 1. (c) BIO Photography Group. Biodiversity Institute of Ontario., some rights reserved (CC BY-NC-SA)
  • 2. (c) Don Loarie, some rights reserved (CC BY)
  • 3. (c) K Schneider, some rights reserved (CC BY-NC), uploaded by K Schneider
  • 4. (c) Jenn Forman Orth, some rights reserved (CC BY-NC-SA)
  • 5. (c) Biodiversity Institute of Ontario. Biodiversity Institute of Ontario., some rights reserved (CC BY-NC-SA)
  • 6. (c) Jeffrey M. Webb, some rights reserved (CC BY-NC-SA)

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