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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.

Dorymyrmex insanus 1
Odorous House Ant 2
Tapinoma sessile
Western Carpenter Ant 1
Camponotus modoc
Bicolored Carpenter Ant 3
Camponotus vicinus
Western Thatching Ant 4
Formica obscuripes
Red Harvester Ant 5
Pogonomyrmex barbatus
Rough Harvester Ant 5
Pogonomyrmex rugosus
Western Harvester Ant 1
Pogonomyrmex occidentalis
Fire Ants 6
Solenopsis
Temnothorax rugatulus 7
Red Pavement Ant 8
Tetramorium caespitum
Common Eastern Velvet Ant 9
Dasymutilla occidentalis
Dasymutilla vestita 10
Noble Scoliid Wasp 11
Scolia nobilitata
Ammophila ferruginosa 12
Grass-Carrying Wasp 13
Isodontia elegans
Great Golden Digger Wasp 14
Sphex ichneumoneus
Great Black Wasp 15
Sphex pensylvanicus
Black-and-yellow Mud Dauber 16
Sceliphron caementarium
Blue Mud Dauber 17
Chalybion californicum
Steel-blue Cricket-hunter Wasp 18
Chlorion aerarium
Beewolf 9
Philanthus gibbosus
Four-banded Stink Bug Hunter Wasp 19
Bicyrtes quadrifasciatus
Eastern Cicada Killer Wasp 20
Sphecius speciosus
Long-horned Bee 16
Svastra obliqua
Agile Long-horned Bee 21
Melissodes agilis
Two-spotted Long-horned Bee 22
Melissodes bimaculatus
Pruinose Squash Bee 23
Peponapis pruinosa
Bumble-bee-mimic Digger Bee 24
Anthophora bomboides
California Cuckoo Bee 25
Xeromelecta californica
Cuckoo Bee 26
Melecta pacifica
White-Shouldered Bumble Bee 27
Bombus appositus
Black-and-gold Bumble Bee 28
Bombus auricomus
Nevada Bumble Bee 29
Bombus nevadensis
High Country Bumble Bee 30
Bombus balteatus
Brown-belted Bumble Bee 31
Bombus griseocollis
Morrison's Bumble Bee 32
Bombus morrisoni
Red-belted Bumble Bee 33
Bombus rufocinctus
Black-notched Bumble Bee 34
Bombus bifarius
Hunt's Bumble Bee 31
Bombus huntii
Forest Bumble Bee 35
Bombus sylvicola
American Bumble Bee 36
Bombus pensylvanicus
Golden Northern Bumble Bee 22
Bombus fervidus
Western Bumble Bee 37
Bombus occidentalis
Western Honey Bee 38
Apis mellifera
Golden Sweat Bee 39
Augochlorella aurata
Green Metallic Sweat Bee 40
Augochloropsis metallica
Bicolored Striped Sweat Bee 41
Agapostemon virescens
Ligated Furrow Bee 42
Halictus ligatus
Orange-legged Furrow Bee 43
Halictus rubicundus
Zephyr Sweat Bee 44
Lasioglossum zephyrum
European Wool Carder Bee 45
Anthidium manicatum
Alfalfa Leafcutter Bee 46
Megachile rotundata
Common Little Leaf-cutter Bee 37
Megachile brevis
Andrena 47
European paper wasp 48
Polistes dominula
Golden Paper Wasp 49
Polistes aurifer
Dark Paper Wasp 50
Polistes fuscatus
Western Paper Wasp 43
Mischocyttarus flavitarsis
Parasitic Yellowjacket 12
Dolichovespula arctica
Common Aerial Yellowjacket 51
Dolichovespula arenaria
Bald-faced Hornet 52
Dolichovespula maculata
Prairie Yellowjacket 53
Vespula atropilosa
Western Yellowjacket 54
Vespula pensylvanica
Thyreodon atricolor 55
Bent-shielded Besieger Wasp 56
Gnamptopelta obsidianator
Long-tailed Giant Ichneumonid Wasp 57
Megarhyssa macrurus
American Pelecinid 58
Pelecinus polyturator
Spiny Leaf Gall Wasp 59
Diplolepis polita
Pigeon Tremex 60
Tremex columba
Black-and-red Horntail 61
Urocerus cressoni
Elm Sawfly 62
Cimbex americana

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

Photo Credits

  • 1. (c) California Academy of Sciences, 2000-2010, some rights reserved (CC BY-NC-SA)
  • 2. (c) Mardon Erbland, some rights reserved (CC BY-NC), uploaded by Mardon Erbland
  • 3. no rights reserved, uploaded by Scott Loarie
  • 4. (c) R.J. Adams, some rights reserved (CC BY-NC), uploaded by R.J. Adams
  • 5. (c) ellen hildebrandt, some rights reserved (CC BY-NC), uploaded by ellen hildebrandt
  • 6. (c) AJ Cann, some rights reserved (CC BY-NC-SA)
  • 7. (c) Jen Fogarty, some rights reserved (CC BY)
  • 8. (c) Ian Marsman, some rights reserved (CC BY-NC-ND)
  • 9. (c) Judy Gallagher, some rights reserved (CC BY), uploaded by Judy Gallagher
  • 10. (c) Meghan Cassidy, some rights reserved (CC BY-SA), uploaded by Meghan Cassidy
  • 11. (c) Pam Piombino, some rights reserved (CC BY-NC), uploaded by Pam Piombino
  • 12. (c) psweet, some rights reserved (CC BY-SA), uploaded by psweet
  • 13. (c) dlbowls, some rights reserved (CC BY-NC), uploaded by dlbowls
  • 14. (c) krzysztofkurylowicz, some rights reserved (CC BY-NC)
  • 15. (c) Dan Mullen, some rights reserved (CC BY-NC-ND)
  • 16. (c) A. Jaszlics, some rights reserved (CC BY-NC)
  • 17. (c) Jimmy Smith, some rights reserved (CC BY-NC-ND)
  • 18. (c) Mickey Long, some rights reserved (CC BY-NC), uploaded by Mickey Long
  • 19. (c) aarongunnar, some rights reserved (CC BY), uploaded by aarongunnar
  • 20. (c) Paul Meredith, some rights reserved (CC BY-NC), uploaded by Paul Meredith
  • 21. (c) jgibbs, some rights reserved (CC BY-NC), uploaded by jgibbs
  • 22. (c) John Baker, some rights reserved (CC BY)
  • 23. (c) Jesse Christopherson, some rights reserved (CC BY-NC-SA)
  • 24. (c) USGS Native Bee Inventory and Monitoring Laboratory, some rights reserved (CC BY)
  • 25. (c) Donna Pomeroy, some rights reserved (CC BY-NC), uploaded by Donna Pomeroy
  • 26. (c) amoorehouse, all rights reserved, uploaded by amoorehouse
  • 27. (c) JerryFriedman, some rights reserved (CC BY-SA)
  • 28. (c) Mark Nofsinger, some rights reserved (CC BY-NC), uploaded by Mark Nofsinger
  • 29. (c) Steve Wells, some rights reserved (CC BY-NC), uploaded by Steve Wells
  • 30. (c) D. Sikes, some rights reserved (CC BY-SA)
  • 31. no rights reserved, uploaded by USGS Bee Inventory and Monitoring Lab
  • 32. (c) Liam O'Brien, some rights reserved (CC BY-NC), uploaded by Liam O'Brien
  • 33. (c) James Bailey, some rights reserved (CC BY-NC), uploaded by James Bailey
  • 34. (c) Sean McCann, some rights reserved (CC BY-NC-SA)
  • 35. (c) M. Goff, some rights reserved (CC BY-NC-SA), uploaded by M. Goff
  • 36. (c) Carolyn Gritzmaker, some rights reserved (CC BY-NC), uploaded by Carolyn Gritzmaker
  • 37. (c) USGS Bee Inventory and Monitoring Lab, some rights reserved (CC BY)
  • 38. (c) bathyporeia, some rights reserved (CC BY-NC-ND)
  • 39. (c) Denis Doucet, some rights reserved (CC BY-NC), uploaded by Denis Doucet
  • 40. (c) Jason M Crockwell, some rights reserved (CC BY-NC-ND), uploaded by Jason M Crockwell
  • 41. (c) molanic, some rights reserved (CC BY-NC), uploaded by molanic
  • 42. (c) cotinis, some rights reserved (CC BY-NC-SA)
  • 43. (c) Don Loarie, some rights reserved (CC BY)
  • 44. (c) Jay Smith, some rights reserved (CC BY-NC)
  • 45. (c) Rob Curtis, some rights reserved (CC BY-NC-SA), uploaded by Rob Curtis
  • 46. (c) ninjatomomi, some rights reserved (CC BY-NC), uploaded by ninjatomomi
  • 47. (c) Cécile Bassaglia, some rights reserved (CC BY-NC-SA)
  • 48. (c) Tony Iwane, some rights reserved (CC BY-NC), uploaded by Tony Iwane
  • 49. (c) Leslie Flint, some rights reserved (CC BY-NC), uploaded by Leslie Flint
  • 50. (c) Bruce J. Marlin, some rights reserved (CC BY-SA)
  • 51. (c) Gilles Gonthier, some rights reserved (CC BY)
  • 52. (c) Fritz Geller-Grimm, some rights reserved (CC BY-SA)
  • 53. (c) don5erickson, some rights reserved (CC BY-NC-SA)
  • 54. (c) Eugene Zelenko, some rights reserved (CC BY-SA)
  • 55. (c) Mark Rosenstein, some rights reserved (CC BY-NC-SA), uploaded by Mark Rosenstein
  • 56. (c) Cody Hough, some rights reserved (CC BY-NC)
  • 57. (c) Evan Kane, some rights reserved (CC BY-NC-ND)
  • 58. (c) mtovar, some rights reserved (CC BY-NC)
  • 59. (c) K Schneider, some rights reserved (CC BY-NC)
  • 60. (c) Jenn Forman Orth, some rights reserved (CC BY-NC-SA)
  • 61. (c) Joe Walewski, some rights reserved (CC BY-NC), uploaded by Joe Walewski
  • 62. (c) Danny Barron, some rights reserved (CC BY-NC-ND)

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