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Insects & Arthropods of Rocky Mountain National Park

The insects & arthropods most often spotted in Rocky Mountain, ranked by recent research-grade observations.

5,310
recent observations
50
species listed
50
insects & arthropods

Naturalists have logged 5,310 research-grade observations across the 50 most-recorded species in Rocky Mountain. The most frequently seen is the Rocky Mountain Parnassian, with 419 recorded sightings.

Most-observed insects & arthropods in Rocky Mountain

Rocky Mountain Parnassian
Parnassius smintheus
419 observations · iNaturalist
Spotted Tussock Moth
Lophocampa maculata
286 observations
Police Car Moth
Gnophaela vermiculata
277 observations · iNaturalist
Weidemeyer's Admiral
Limenitis weidemeyerii
271 observations
White-spotted Sawyer
Monochamus scutellatus
250 observations
Hoary Comma
Polygonia gracilis
229 observations
Blue Fungus Beetle
Cypherotylus californicus
173 observations · iNaturalist
Western Tiger Swallowtail
Papilio rutulus
147 observations
White-lined Sphinx
Hyles lineata
145 observations · iNaturalist
Painted Lady
Vanessa cardui
141 observations
Adejeania vexatrix
Adejeania vexatrix
131 observations · iNaturalist
Greenish Blue
Icaricia saepiolus
127 observations · iNaturalist
Red Admiral
Vanessa atalanta
126 observations
Arctic Blue
Agriades glandon
120 observations · iNaturalist
Mourning Cloak
Nymphalis antiopa
109 observations
Small Wood-Nymph
Cercyonis oetus
103 observations · iNaturalist
Ornate Checkered Beetle
Trichodes ornatus
101 observations
Common Ringlet
Coenonympha california
95 observations
Dorcas Copper
Tharsalea dorcas
90 observations · iNaturalist
Mead's Sulphur
Colias meadii
88 observations · iNaturalist
Hunt's Bumble Bee
Bombus huntii
88 observations · iNaturalist
Seven-spotted Lady Beetle
Coccinella septempunctata
85 observations
Green Comma
Polygonia faunus
81 observations
Nevada Bumble Bee
Bombus nevadensis
81 observations
Pale Swallowtail
Papilio eurymedon
76 observations
Arctic Fritillary
Boloria chariclea
74 observations
Queen Alexandra’s Sulphur
Colias alexandra
71 observations
Paddle-tailed Darner
Aeshna palmata
70 observations · iNaturalist
Rocky Mountain Maple Felt Mite
Aceria calaceris
68 observations · iNaturalist
Variegated Fritillary
Euptoieta claudia
66 observations
Margined White
Pieris marginalis
66 observations · iNaturalist
Colorado Black-notched Bumble Bee
Bombus bifarius
65 observations · iNaturalist
Northern Checkerspot
Chlosyne palla
64 observations · iNaturalist
Western Pine Elfin
Callophrys eryphon
63 observations · iNaturalist
Russet Skipperling
Piruna pirus
63 observations · iNaturalist
Mormon Fritillary
Argynnis mormonia
61 observations · iNaturalist
Goldenrod Crab Spider
Misumena vatia
59 observations
Nuttall's Blister Beetle
Lytta nuttalli
57 observations · iNaturalist
Ruddy Copper
Tharsalea rubidus
56 observations · iNaturalist
Many-spotted Tiger Moth
Hypsocompe permaculata
56 observations · iNaturalist
Silvery Checkerspot
Chlosyne nycteis
55 observations · iNaturalist
Milbert's Tortoiseshell
Aglais milberti
55 observations · iNaturalist
Field Crescent
Phyciodes pulchella
55 observations · iNaturalist
Colorado Alpine
Erebia callias
54 observations · iNaturalist
Anise Swallowtail
Papilio zelicaon
52 observations
Transverse Lady Beetle
Coccinella transversoguttata
51 observations · iNaturalist
Western Honey Bee
Apis mellifera
50 observations
Small White
Pieris rapae
47 observations
American Branded Skipper
Hesperia colorado
47 observations · iNaturalist
Large Marble
Euchloe ausonides
46 observations · iNaturalist

Built from recent research-grade iNaturalist observations. Identifications are community-sourced and may occasionally be wrong, and the ranking reflects where people record and photograph wildlife, so a species seen often here is not necessarily rare elsewhere. Some plants and animals are only out in certain seasons. Treat this as a lively snapshot of what people are finding, not a formal checklist.

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