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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.

Punctured Tiger Beetle 1
Cicindela punctulata
Green Claybank Tiger Beetle 2
Cicindela denverensis
Twelve-spotted Tiger Beetle 3
Cicindela duodecimguttata
Big Sand Tiger Beetle 4
Cicindela formosa
Blowout Tiger Beetle 5
Cicindela lengi
Common Claybank Tiger Beetle 3
Cicindela limbalis
Western Tiger Beetle 6
Cicindela oregona
Purple Tiger Beetle 7
Cicindela purpurea
Bronzed Tiger Beetle 8
Cicindela repanda
Festive Tiger Beetle 4
Cicindela scutellaris
Oblique-lined Tiger Beetle 4
Cicindela tranquebarica
Blue-margined Ground Beetle 9
Pasimachus elongatus
Big-headed Ground Beetle 10
Scarites subterraneus
Common black ground beetle 11
Pterostichus melanarius
Wood Ground-beetle 12
Carabus nemoralis
Zygogramma conjuncta 13
St. Johnswort Beetle 14
Chrysolina hyperici
Green Dock Beetle 15
Gastrophysa cyanea
Knab's Leaf Beetle 16
Chrysomela knabi
Cottonwood Leaf Beetle 6
Chrysomela scripta
Willow Leaf Beetle 17
Plagiodera versicolora
Striped Willow Leaf Beetle 18
Disonycha alternata
Three-spotted Flea Beetle 19
Disonycha triangularis
Spinach Flea Beetle 20
Disonycha xanthomelas
Sumac Flea Beetle 21
Blepharida rhois
Checkered melon beetle 22
Paranapiacaba tricincta
Spotted Cucumber Beetle 23
Diabrotica undecimpunctata
Phyllobrotica decorata 24
Waterlily Leaf Beetle 2
Galerucella nymphaeae
Dogbane Leaf Beetle 25
Chrysochus auratus
Common Asparagus Beetle 26
Crioceris asparagi
Goldenrod Leaf Miner Beetle 27
Microrhopala vittata
Golden Tortoise Beetle 10
Charidotella sexpunctata
24-spot Ladybird 28
Subcoccinella vigintiquatuorpunctata
Spotted Lady Beetle 29
Coleomegilla maculata
Fifteen-spotted Ladybug 30
Anatis labiculata
LeConte's Giant Ladybeetle 2
Anatis lecontei
Asian Lady Beetle 31
Harmonia axyridis
Convergent Lady Beetle 32
Hippodamia convergens
Parenthesis Lady Beetle 10
Hippodamia parenthesis
Adonis Ladybird 29
Hippodamia variegata
Nine-spotted Ladybug 10
Coccinella novemnotata
Seven-spotted Ladybird 31
Coccinella septempunctata
Transverse Lady Beetle 33
Coccinella transversoguttata
Three-banded Ladybug 10
Coccinella trifasciata
Two-spotted Ladybug 34
Adalia bipunctata
Western Spotless Ladybeetle 19
Cycloneda polita
Spotless Lady Beetle 35
Cycloneda sanguinea
Cream-spotted Ladybird 36
Calvia quatuordecimguttata
Twenty-spotted Lady Beetle 10
Psyllobora vigintimaculata
Red-backed Darkling Beetle 37
Eleodes suturalis
Embaphion muricatum 38
Bothrotes canaliculatus 39
Blue Fungus Beetle 40
Gibbifer californicus
Slender Lizard Beetle 27
Acropteroxys gracilis
Red Flat Bark Beetle 31
Cucujus clavipes
Red-blue Checkered Beetle 24
Trichodes nutalli
Ornate Checkered Beetle 41
Trichodes ornatus
Two-spotted Melyrid 42
Collops bipunctatus
Scarlet Malachite Beetle 15
Malachius aeneus
Strawberry Root Weevil 43
Otiorhynchus ovatus
Green Immigrant Leaf Weevil 44
Polydrusus formosus
Canada Thistle Bud Weevil 45
Larinus carlinae
Stem-boring Weevil 15
Mecinus janthinus
Rose Curculio 46
Merhynchites bicolor
Hollyhock Weevil 44
Rhopalapion longirostre
California Prionus 47
Prionus californicus
Pole Borer 48
Neandra marginicollis
Gnathacmaeops pratensis 49
Anastrangalia sanguinea 50
Red-shouldered Pine Borer 51
Stictoleptura canadensis
Eastern Elderberry Borer 52
Desmocerus palliatus
Blackhorned Pine Borer 53
Callidium antennatum
Locust Borer Beetle 54
Megacyllene robiniae
Longhorned Beetle 55
Batyle suturalis
Tragidion coquus 56
Tragidion densiventre 57
Neospondylis upiformis 58
White-spotted Sawyer 59
Monochamus scutellatus
Leafy spurge stem boring beetle 60
Oberea erythrocephala
Milkweed Borer 61
Tetraopes femoratus
Red Milkweed Beetle 62
Tetraopes tetrophthalmus
Golden Net-winged Beetle 63
Dictyoptera aurora
Cantharis pallida 64
Colorado Soldier Beetle 65
Chauliognathus basalis
Chauliognathus deceptus 40
Eastern Eyed Click Beetle 66
Alaus oculatus
Western Sculptured Pine Borer 67
Chalcophora angulicollis
Buprestis confluenta 68
Emerald Ash Borer 69
Agrilus planipennis
gold-and-brown rove beetle 70
Ontholestes cingulatus
Hairy Rove Beetle 71
Creophilus maxillosus
Yellow-bellied Burying Beetle 72
Nicrophorus guttula
Banded Sexton Beetle 73
Nicrophorus investigator
Margined Burying Beetle 74
Nicrophorus marginatus
Tomentose Burying Beetle 75
Nicrophorus tomentosus
Garden Carrion Beetle 41
Heterosilpha ramosa
Northern Carrion Beetle 72
Thanatophilus lapponicus
Emerald Euphoria 76
Euphoria fulgida
Bumble Flower Beetle 29
Euphoria inda

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

Photo Credits

  • 1. (c) A. Jaszlics, some rights reserved (CC BY-NC)
  • 2. (c) Steven Mlodinow, some rights reserved (CC BY-NC), uploaded by Steven Mlodinow
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  • 68. (c) Kaitlin Backlund, some rights reserved (CC BY-NC-ND), uploaded by Kaitlin Backlund
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  • 70. (c) Anthony Zukoff, some rights reserved (CC BY-NC-SA)
  • 71. (c) Steven Severinghaus, some rights reserved (CC BY-NC-SA)
  • 72. (c) Natural History Museum Department of Entomology, Coleoptera/ Hemiptera Section, some rights reserved (CC BY-NC-SA)
  • 73. (c) Jim Johnson, some rights reserved (CC BY-NC-ND), uploaded by Jim Johnson
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