Insects & Arthropods of Montana
The insects & arthropods most often spotted in Montana, ranked by recent research-grade observations.
25,874
recent observations
50
species listed
50
insects & arthropods
Naturalists have logged 25,874 research-grade observations across the 50 most-recorded species in Montana. The most frequently seen is the California Tortoiseshell, with 976 recorded sightings.
Most-observed insects & arthropods in Montana
California Tortoiseshell
Nymphalis californica
976 observations
Vancouver Bumble Bee
Bombus vancouverensis
930 observations · iNaturalist
White-spotted Sawyer
Monochamus scutellatus
910 observations
Mormon Fritillary
Argynnis mormonia
782 observations · iNaturalist
Spotted Tussock Moth
Lophocampa maculata
764 observations
Western Honey Bee
Apis mellifera
722 observations
Hunt's Bumble Bee
Bombus huntii
720 observations · iNaturalist
Western Tent Caterpillar Moth
Malacosoma californica
705 observations · iNaturalist
Essex Skipper
Thymelicus lineola
699 observations · iNaturalist
Mourning Cloak
Nymphalis antiopa
676 observations
Police Car Moth
Gnophaela vermiculata
668 observations · iNaturalist
Lorquin's Admiral
Limenitis lorquini
644 observations
Leafy Spurge Hawkmoth
Hyles euphorbiae
640 observations · iNaturalist
Western Conifer Seed Bug
Leptoglossus occidentalis
618 observations · iNaturalist
Milbert's Tortoiseshell
Aglais milberti
586 observations · iNaturalist
Boisduval's Blue
Icaricia icarioides
583 observations · iNaturalist
Painted Lady
Vanessa cardui
581 observations
Two-striped Grasshopper
Melanoplus bivittatus
549 observations · iNaturalist
Green Comma
Polygonia faunus
547 observations
European Mantis
Mantis religiosa
542 observations
Rocky Mountain Parnassian
Parnassius smintheus
539 observations · iNaturalist
Common Wood-Nymph
Cercyonis pegala
526 observations
Small Wood-Nymph
Cercyonis oetus
501 observations · iNaturalist
Goldenrod Crab Spider
Misumena vatia
497 observations
Seven-spotted Lady Beetle
Coccinella septempunctata
482 observations
Ornate Checkered Beetle
Trichodes ornatus
466 observations
Field Crescent
Phyciodes pulchella
459 observations · iNaturalist
Common Alpine
Erebia epipsodea
459 observations · iNaturalist
Anise Swallowtail
Papilio zelicaon
423 observations
Asian Lady Beetle
Harmonia axyridis
411 observations
Banded Garden Spider
Argiope trifasciata
410 observations · iNaturalist
Common Ringlet
Coenonympha california
409 observations
Pale Swallowtail
Papilio eurymedon
401 observations
Mormon Cricket
Anabrus simplex
387 observations · iNaturalist
Clouded Sulphur
Colias philodice
381 observations
Small White
Pieris rapae
379 observations
Nevada Bumble Bee
Bombus nevadensis
378 observations
Transverse Lady Beetle
Coccinella transversoguttata
373 observations · iNaturalist
Silvery Blue
Glaucopsyche lygdamus
371 observations
Hoary Comma
Polygonia gracilis
370 observations
White-lined Sphinx
Hyles lineata
367 observations · iNaturalist
Western Tiger Swallowtail
Papilio rutulus
361 observations
Great Spangled Fritillary
Argynnis cybele
355 observations · iNaturalist
Two-tailed Swallowtail
Papilio multicaudata
344 observations · iNaturalist
Common Drone Fly
Eristalis tenax
342 observations
Flame Skimmer
Libellula saturata
335 observations · iNaturalist
Yellow Velvet Beetle
Lepturobosca chrysocoma
331 observations · iNaturalist
Hayden's Ringlet
Coenonympha haydenii
329 observations · iNaturalist
Mariposa Copper
Tharsalea mariposa
328 observations · iNaturalist
Blue Copper
Tharsalea heteronea
318 observations · iNaturalist
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