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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.

Waterlily Leaf Beetle 1
Galerucella nymphaeae
Dogbane Leaf Beetle 2
Chrysochus auratus
Common Asparagus Beetle 3
Crioceris asparagi
Goldenrod Leaf Miner Beetle 4
Microrhopala vittata
Golden Tortoise Beetle 5
Charidotella sexpunctata
24-spot Ladybird 6
Subcoccinella vigintiquatuorpunctata
Spotted Lady Beetle 7
Coleomegilla maculata
Fifteen-spotted Ladybug 8
Anatis labiculata
LeConte's Giant Ladybeetle 1
Anatis lecontei
Asian Lady Beetle 9
Harmonia axyridis
Convergent Lady Beetle 10
Hippodamia convergens
Parenthesis Lady Beetle 5
Hippodamia parenthesis
Adonis Ladybird 7
Hippodamia variegata
Nine-spotted Ladybug 5
Coccinella novemnotata
Seven-spotted Ladybird 9
Coccinella septempunctata
Transverse Lady Beetle 11
Coccinella transversoguttata
Three-banded Ladybug 5
Coccinella trifasciata
Two-spotted Ladybug 12
Adalia bipunctata
Western Spotless Ladybeetle 13
Cycloneda polita
Spotless Lady Beetle 14
Cycloneda sanguinea
Cream-spotted Ladybird 15
Calvia quatuordecimguttata
Twenty-spotted Lady Beetle 5
Psyllobora vigintimaculata
Red-backed Darkling Beetle 16
Eleodes suturalis
Embaphion muricatum 17
Bothrotes canaliculatus 18
Blue Fungus Beetle 19
Gibbifer californicus
Slender Lizard Beetle 4
Acropteroxys gracilis
Red Flat Bark Beetle 9
Cucujus clavipes
Red-blue Checkered Beetle 20
Trichodes nutalli
Ornate Checkered Beetle 21
Trichodes ornatus
Two-spotted Melyrid 22
Collops bipunctatus
Scarlet Malachite Beetle 23
Malachius aeneus
Strawberry Root Weevil 24
Otiorhynchus ovatus
Green Immigrant Leaf Weevil 25
Polydrusus formosus
Canada Thistle Bud Weevil 26
Larinus carlinae
Stem-boring Weevil 23
Mecinus janthinus
Rose Curculio 27
Merhynchites bicolor
Hollyhock Weevil 25
Rhopalapion longirostre
California Prionus 28
Prionus californicus
Pole Borer 29
Neandra marginicollis
Gnathacmaeops pratensis 30
Anastrangalia sanguinea 31
Red-shouldered Pine Borer 32
Stictoleptura canadensis
Eastern Elderberry Borer 33
Desmocerus palliatus
Blackhorned Pine Borer 34
Callidium antennatum
Locust Borer Beetle 35
Megacyllene robiniae
Longhorned Beetle 36
Batyle suturalis
Tragidion coquus 37
Tragidion densiventre 38
Neospondylis upiformis 39
White-spotted Sawyer 40
Monochamus scutellatus
Leafy spurge stem boring beetle 41
Oberea erythrocephala
Milkweed Borer 42
Tetraopes femoratus
Red Milkweed Beetle 43
Tetraopes tetrophthalmus
Golden Net-winged Beetle 44
Dictyoptera aurora
Cantharis pallida 45
Colorado Soldier Beetle 46
Chauliognathus basalis
Chauliognathus deceptus 19
Eastern Eyed Click Beetle 47
Alaus oculatus
Western Sculptured Pine Borer 48
Chalcophora angulicollis
Buprestis confluenta 49
Emerald Ash Borer 50
Agrilus planipennis
gold-and-brown rove beetle 51
Ontholestes cingulatus
Hairy Rove Beetle 52
Creophilus maxillosus
Yellow-bellied Burying Beetle 53
Nicrophorus guttula
Banded Sexton Beetle 54
Nicrophorus investigator
Margined Burying Beetle 55
Nicrophorus marginatus
Tomentose Burying Beetle 56
Nicrophorus tomentosus
Garden Carrion Beetle 21
Heterosilpha ramosa
Northern Carrion Beetle 53
Thanatophilus lapponicus
Emerald Euphoria 57
Euphoria fulgida
Bumble Flower Beetle 7
Euphoria inda
Ten-lined June Beetle 58
Polyphylla decemlineata
brown scarab beetle 59
Phyllophaga lanceolata
Japanese Beetle 60
Popillia japonica
Maculated Dung Beetle 61
Aphodius distinctus
Cottonwood Stag Beetle 62
Lucanus mazama
Widespread Snowfly 63
Capnia confusa
Vernal Snowfly 64
Capnia vernalis
Colorado Forestfly 65
Malenka coloradensis
Banded Forestfly 63
Prostoia besametsa
Rough Sallfly 64
Triznaka pintada
Thermometer Cricket 66
Oecanthus fultoni
Fork-tailed Bush Katydid 67
Scudderia furcata
Greater Anglewing 68
Microcentrum rhombifolium
Mormon Cricket 69
Anabrus simplex
Orange-winged Grasshopper 11
Arphia conspersa
Red-winged Grasshopper 70
Arphia pseudonietana
Green-striped Grasshopper 51
Chortophaga viridifasciata
Wrinkled Grasshopper 71
Hippiscus ocelote
Coral-winged Grasshopper 1
Pardalophora apiculata
Wrangler Grasshopper 11
Circotettix rabula
Pallid-winged Grasshopper 72
Trimerotropis pallidipennis
Carolina Grasshopper 73
Dissosteira carolina
Velvet-striped Grasshopper 74
Eritettix simplex
Rainbow Grasshopper 75
Dactylotum bicolor
Snakeweed Grasshopper 70
Hesperotettix viridis
Differential Grasshopper 76
Melanoplus differentialis
Lakin Grasshopper 1
Melanoplus lakinus
Two-striped Grasshopper 77
Melanoplus bivittatus

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

Photo Credits

  • 1. (c) Steven Mlodinow, some rights reserved (CC BY-NC), uploaded by Steven Mlodinow
  • 2. (c) Sara Rall, some rights reserved (CC BY-NC), uploaded by Sara Rall
  • 3. (c) Ryan Hodnett, some rights reserved (CC BY-SA)
  • 4. (c) Rob Curtis, some rights reserved (CC BY-NC-SA), uploaded by Rob Curtis
  • 5. (c) Jason M Crockwell, some rights reserved (CC BY-NC-ND), uploaded by Jason M Crockwell
  • 6. (c) Alejandro Ocampo, some rights reserved (CC BY-NC), uploaded by Alejandro Ocampo
  • 7. (c) cyric, some rights reserved (CC BY-NC-SA), uploaded by cyric
  • 8. (c) Lee Elliott, some rights reserved (CC BY-NC-SA), uploaded by Lee Elliott
  • 9. (c) Katja Schulz, some rights reserved (CC BY)
  • 10. (c) Nature Gardens Gallery Interpreter, some rights reserved (CC BY-NC), uploaded by Nature Gardens Gallery Interpreter
  • 11. (c) Lon&Queta, some rights reserved (CC BY-NC-SA)
  • 12. (c) Grahame, some rights reserved (CC BY-NC-ND), uploaded by Grahame
  • 13. (c) James Bailey, some rights reserved (CC BY-NC), uploaded by James Bailey
  • 14. no rights reserved, uploaded by Jesse Rorabaugh
  • 15. (c) Sandy Rae, some rights reserved (CC BY-SA)
  • 16. (c) Tony Palmer, some rights reserved (CC BY-NC), uploaded by Tony Palmer
  • 17. (c) unquenchable.fire, some rights reserved (CC BY-NC-ND)
  • 18. (c) Lena Zappia, some rights reserved (CC BY-NC), uploaded by Lena Zappia
  • 19. (c) Scot Pipkin, some rights reserved (CC BY-NC-SA), uploaded by Scot Pipkin
  • 20. (c) psweet, some rights reserved (CC BY-SA), uploaded by psweet
  • 21. (c) Ken-ichi Ueda, some rights reserved (CC BY)
  • 22. no rights reserved, uploaded by USGS Bee Inventory and Monitoring Lab
  • 23. (c) Kerry Matz, some rights reserved (CC BY-NC-SA)
  • 24. (c) a_cuell, some rights reserved (CC BY-NC), uploaded by a_cuell
  • 25. (c) Fyn Kynd, some rights reserved (CC BY-SA), uploaded by Fyn Kynd
  • 26. (c) Erik Attaway, some rights reserved (CC BY-NC), uploaded by Erik Attaway
  • 27. (c) Keith Roragen, some rights reserved (CC BY-NC-SA)
  • 28. (c) Peachland Joe, some rights reserved (CC BY-NC-SA)
  • 29. (c) dlbowls, some rights reserved (CC BY-NC), uploaded by dlbowls
  • 30. (c) Matt Bowser, some rights reserved (CC BY), uploaded by Matt Bowser
  • 31. no rights reserved, uploaded by Scott Loarie
  • 32. (c) Gilles Gonthier, some rights reserved (CC BY)
  • 33. (c) Laura Gaudette, some rights reserved (CC BY), uploaded by Laura Gaudette
  • 34. (c) bryan-maltais, some rights reserved (CC BY-NC), uploaded by bryan-maltais
  • 35. (c) Ilona L, some rights reserved (CC BY-NC-SA)
  • 36. (c) Victor W Fazio III, some rights reserved (CC BY-NC), uploaded by Victor W Fazio III
  • 37. (c) Bob O'Kennon, some rights reserved (CC BY-NC), uploaded by Bob O'Kennon
  • 38. (c) Margarethe Brummermann Ph.D., some rights reserved (CC BY-NC-SA)
  • 39. (c) M. Goff, some rights reserved (CC BY-NC-SA), uploaded by M. Goff
  • 40. (c) Jenn Forman Orth, some rights reserved (CC BY-NC-SA)
  • 41. (c) Ferran Turmo Gort, some rights reserved (CC BY-NC-SA)
  • 42. (c) J. Maughn, some rights reserved (CC BY-NC), uploaded by J. Maughn
  • 43. (c) Larry Meade, some rights reserved (CC BY-NC-SA)
  • 44. (c) Paul Bedell, some rights reserved (CC BY-NC-SA)
  • 45. (c) gailhampshire, some rights reserved (CC BY)
  • 46. (c) Scott Tucker, some rights reserved (CC BY-NC-ND)
  • 47. (c) Mary Keim, some rights reserved (CC BY-NC-SA)
  • 48. (c) Damon Tighe, some rights reserved (CC BY-NC), uploaded by Damon Tighe
  • 49. (c) Kaitlin Backlund, some rights reserved (CC BY-NC-ND), uploaded by Kaitlin Backlund
  • 50. (c) Macroscopic Solutions, some rights reserved (CC BY-NC)
  • 51. (c) Anthony Zukoff, some rights reserved (CC BY-NC-SA)
  • 52. (c) Steven Severinghaus, some rights reserved (CC BY-NC-SA)
  • 53. (c) Natural History Museum Department of Entomology, Coleoptera/ Hemiptera Section, some rights reserved (CC BY-NC-SA)
  • 54. (c) Jim Johnson, some rights reserved (CC BY-NC-ND), uploaded by Jim Johnson
  • 55. (c) Robert, some rights reserved (CC BY-NC)
  • 56. (c) Larissa, some rights reserved (CC BY-NC-SA)
  • 57. (c) cotinis, some rights reserved (CC BY-NC-SA)
  • 58. (c) Celeste Ramsay, some rights reserved (CC BY-NC-ND)
  • 59. (c) latimeria-co, some rights reserved (CC BY-NC), uploaded by latimeria-co
  • 60. (c) Kurt Andreas, some rights reserved (CC BY-NC-SA)
  • 61. (c) Stanislav Krejčík, some rights reserved (CC BY)
  • 62. (c) Philippe Blais, some rights reserved (CC BY-NC-ND), uploaded by Philippe Blais
  • 63. (c) Colorado Parks and Wildlife, all rights reserved, uploaded by Colorado Parks and Wildlife
  • 64. (c) Colorado Parks and Wildlife, some rights reserved (CC BY-NC-SA), uploaded by Colorado Parks and Wildlife
  • 65. (c) Corey Lange, some rights reserved (CC BY-NC), uploaded by Corey Lange
  • 66. (c) Diana-Terry Hibbitts, some rights reserved (CC BY-NC), uploaded by Diana-Terry Hibbitts
  • 67. (c) David Hill, some rights reserved (CC BY)
  • 68. (c) 106584015630019574849, some rights reserved (CC BY-NC-SA), uploaded by 106584015630019574849
  • 69. (c) Jesse Varner, some rights reserved (CC BY-NC-SA)
  • 70. (c) Margarethe Brummermann, some rights reserved (CC BY-NC-SA)
  • 71. (c) Thomas, some rights reserved (CC BY-NC), uploaded by Thomas
  • 72. (c) K Schneider, some rights reserved (CC BY-NC), uploaded by K Schneider
  • 73. (c) Lauren Sobkoviak, some rights reserved (CC BY-NC-ND)
  • 74. (c) leptim, some rights reserved (CC BY-NC)
  • 75. (c) kibuyu, some rights reserved (CC BY-NC-SA)
  • 76. (c) Cullen Hanks, some rights reserved (CC BY-NC), uploaded by Cullen Hanks
  • 77. (c) E Green, some rights reserved (CC BY-NC-ND)

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