Wildlife of Boulder County

Boulder County is comprised of 740 square miles of land nestled along the front range of Colorado just 30 miles northwest of Denver. Its proximity to the mountains, diverse landscapes, and various designated open spaces make the county ideal for observing local and even migrating wildlife. ...more ↓

Codling Moth ¹
Cydia pomonella

Western Honey Bee ²
Apis mellifera

Western Tiger Swallowtail ³
Papilio rutulus

Polyphemus Moth ⁴
Antheraea polyphemus

Widow Skimmer ⁵
Libellula luctuosa

Asian Lady Beetle ⁶
Harmonia axyridis

Painted Lady ⁷
Vanessa cardui

Monarch ⁸
Danaus plexippus

Wheel Bug ⁹
Arilus cristatus

Convergent Lady Beetle ¹⁰
Hippodamia convergens

Red Admiral ¹¹
Vanessa atalanta

White-lined Sphinx ¹²
Hyles lineata

Blinded Sphinx ¹³
Paonias excaecata

Halloween Pennant ¹⁴
Celithemis eponina

Hoary Comma ¹⁵
Polygonia gracilis

Gray Hairstreak ¹⁶
Strymon melinus

Common Checkered-Skipper ¹⁷
Pyrgus communis

Pallid-winged Grasshopper ¹⁸
Trimerotropis pallidipennis

Greater Bee Fly ¹⁹
Bombylius major

Seven-spotted Ladybird ⁶
Coccinella septempunctata

American Rubyspot ²⁰
Hetaerina americana

Dainty Sulphur ²¹
Nathalis iole

Two-spotted Ladybug ²²
Adalia bipunctata

Northern Paper Wasp ²³
Polistes fuscatus

Agile Long-horned Bee ²⁴
Melissodes agilis

Alfalfa Leafcutter Bee ²⁵
Megachile rotundata

Black Saddlebags ²⁰
Tramea lacerata

Bald-faced Hornet ²⁶
Dolichovespula maculata

Pearl Crescent ²⁷
Phyciodes tharos

Eastern Boxelder Bug ²⁸
Boisea trivittata

Big-eyed Toad Bug ²⁹
Gelastocoris oculatus

Rose Aphid ³⁰
Macrosiphum rosae

European Mantis ³¹
Mantis religiosa

Callippe Fritillary
Speyeria callippe

Spotted Cucumber Beetle ³²
Diabrotica undecimpunctata

Pale Swallowtail ³³
Papilio eurymedon

Large Milkweed Bug ⁶
Oncopeltus fasciatus

Cabbage White ³⁴
Pieris rapae

Drone Fly ³⁵
Eristalis tenax

Western Tent Caterpillar Moth ³⁶
Malacosoma californicum

Vivid Dancer ³⁷
Argia vivida

Masked Hunter ³⁸
Reduvius personatus

Satyr Comma ³⁹
Polygonia satyrus

Harlequin Bug ⁴⁰
Murgantia histrionica

Silvery Blue ⁴¹
Glaucopsyche lygdamus

Mourning Cloak ⁴²
Nymphalis antiopa

Four-spotted Skimmer ⁴³
Libellula quadrimaculata

Dreamy Duskywing ⁴⁴
Erynnis icelus

Leonard's Skipper ⁴⁵
Hesperia leonardus

Tawny-edged Skipper ⁴⁶
Polites themistocles

Dun Skipper ²⁰
Euphyes vestris

Black Swallowtail ⁴⁷
Papilio polyxenes

Clouded Sulphur ⁴⁸
Colias philodice

Orange Sulphur ⁴⁸
Colias eurytheme

Bronze Copper ⁴⁹
Lycaena hyllus

Aphrodite Fritillary ⁵⁰
Speyeria aphrodite

Viceroy ⁵¹
Limenitis archippus

Checkered White ¹⁴
Pontia protodice

Large Marble ⁵²
Euchloe ausonides

Edited by srupinsky, Melanie Hill, Deborah H Price, and Dave Sutherland, some rights reserved (CC BY-SA)

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Wildlife of Boulder County

Codling Moth 1 Cydia pomonella

Western Honey Bee 2 Apis mellifera

Western Tiger Swallowtail 3 Papilio rutulus

Polyphemus Moth 4 Antheraea polyphemus

Widow Skimmer 5 Libellula luctuosa

Asian Lady Beetle 6 Harmonia axyridis

Painted Lady 7 Vanessa cardui

Monarch 8 Danaus plexippus

Wheel Bug 9 Arilus cristatus

Convergent Lady Beetle 10 Hippodamia convergens

Red Admiral 11 Vanessa atalanta

White-lined Sphinx 12 Hyles lineata

Blinded Sphinx 13 Paonias excaecata

Halloween Pennant 14 Celithemis eponina

Hoary Comma 15 Polygonia gracilis

Gray Hairstreak 16 Strymon melinus

Common Checkered-Skipper 17 Pyrgus communis

Pallid-winged Grasshopper 18 Trimerotropis pallidipennis

Greater Bee Fly 19 Bombylius major

Seven-spotted Ladybird 6 Coccinella septempunctata

American Rubyspot 20 Hetaerina americana

Dainty Sulphur 21 Nathalis iole

Two-spotted Ladybug 22 Adalia bipunctata

Northern Paper Wasp 23 Polistes fuscatus

Agile Long-horned Bee 24 Melissodes agilis

Alfalfa Leafcutter Bee 25 Megachile rotundata

Black Saddlebags 20 Tramea lacerata

Bald-faced Hornet 26 Dolichovespula maculata

Pearl Crescent 27 Phyciodes tharos

Eastern Boxelder Bug 28 Boisea trivittata

Big-eyed Toad Bug 29 Gelastocoris oculatus

Rose Aphid 30 Macrosiphum rosae

European Mantis 31 Mantis religiosa

Callippe Fritillary Speyeria callippe

Spotted Cucumber Beetle 32 Diabrotica undecimpunctata

Pale Swallowtail 33 Papilio eurymedon

Large Milkweed Bug 6 Oncopeltus fasciatus

Cabbage White 34 Pieris rapae

Drone Fly 35 Eristalis tenax

Western Tent Caterpillar Moth 36 Malacosoma californicum

Vivid Dancer 37 Argia vivida

Masked Hunter 38 Reduvius personatus

Satyr Comma 39 Polygonia satyrus

Harlequin Bug 40 Murgantia histrionica

Silvery Blue 41 Glaucopsyche lygdamus

Mourning Cloak 42 Nymphalis antiopa

Four-spotted Skimmer 43 Libellula quadrimaculata

Dreamy Duskywing 44 Erynnis icelus

Leonard's Skipper 45 Hesperia leonardus

Tawny-edged Skipper 46 Polites themistocles

Dun Skipper 20 Euphyes vestris

Black Swallowtail 47 Papilio polyxenes

Clouded Sulphur 48 Colias philodice

Orange Sulphur 48 Colias eurytheme

Bronze Copper 49 Lycaena hyllus

Aphrodite Fritillary 50 Speyeria aphrodite

Viceroy 51 Limenitis archippus

Checkered White 14 Pontia protodice

Large Marble 52 Euchloe ausonides