Insects & Arthropods of Montana
The insects & arthropods most often spotted in Montana, ranked by recent research-grade observations.
26,319
recent observations
50
species listed
50
insects & arthropods
Naturalists have logged 26,319 research-grade observations across the 50 most-recorded species in Montana. The most frequently seen is the California Tortoiseshell, with 988 recorded sightings.
Most-observed insects & arthropods in Montana
California Tortoiseshell
Nymphalis californica
988 observations
Vancouver Bumble Bee
Bombus vancouverensis
939 observations · iNaturalist
White-spotted Sawyer
Monochamus scutellatus
917 observations
Mormon Fritillary
Argynnis mormonia
799 observations · iNaturalist
Spotted Tussock Moth
Lophocampa maculata
779 observations
Western Honey Bee
Apis mellifera
745 observations
Hunt's Bumble Bee
Bombus huntii
728 observations · iNaturalist
Western Tent Caterpillar Moth
Malacosoma californica
706 observations · iNaturalist
Essex Skipper
Thymelicus lineola
703 observations · iNaturalist
Mourning Cloak
Nymphalis antiopa
690 observations
Police Car Moth
Gnophaela vermiculata
676 observations · iNaturalist
Lorquin's Admiral
Limenitis lorquini
659 observations
Leafy Spurge Hawkmoth
Hyles euphorbiae
643 observations · iNaturalist
Western Conifer Seed Bug
Leptoglossus occidentalis
635 observations · iNaturalist
Milbert's Tortoiseshell
Aglais milberti
597 observations · iNaturalist
Painted Lady
Vanessa cardui
588 observations
Boisduval's Blue
Icaricia icarioides
584 observations · iNaturalist
European Mantis
Mantis religiosa
582 observations
Two-striped Grasshopper
Melanoplus bivittatus
579 observations · iNaturalist
Green Comma
Polygonia faunus
559 observations
Rocky Mountain Parnassian
Parnassius smintheus
554 observations · iNaturalist
Common Wood-Nymph
Cercyonis pegala
536 observations
Seven-spotted Lady Beetle
Coccinella septempunctata
505 observations
Small Wood-Nymph
Cercyonis oetus
502 observations · iNaturalist
Goldenrod Crab Spider
Misumena vatia
499 observations
Ornate Checkered Beetle
Trichodes ornatus
473 observations
Common Alpine
Erebia epipsodea
460 observations · iNaturalist
Field Crescent
Phyciodes pulchella
459 observations · iNaturalist
Anise Swallowtail
Papilio zelicaon
426 observations
Banded Garden Spider
Argiope trifasciata
421 observations · iNaturalist
Asian Lady Beetle
Harmonia axyridis
414 observations
Common Ringlet
Coenonympha california
409 observations
Pale Swallowtail
Papilio eurymedon
401 observations
Mormon Cricket
Anabrus simplex
400 observations · iNaturalist
Small White
Pieris rapae
394 observations
Clouded Sulphur
Colias philodice
382 observations
Nevada Bumble Bee
Bombus nevadensis
380 observations
Transverse Lady Beetle
Coccinella transversoguttata
376 observations · iNaturalist
Hoary Comma
Polygonia gracilis
374 observations
White-lined Sphinx
Hyles lineata
371 observations · iNaturalist
Silvery Blue
Glaucopsyche lygdamus
371 observations
Western Tiger Swallowtail
Papilio rutulus
364 observations
Great Spangled Fritillary
Argynnis cybele
364 observations · iNaturalist
Common Drone Fly
Eristalis tenax
359 observations
Two-tailed Swallowtail
Papilio multicaudata
352 observations · iNaturalist
Flame Skimmer
Libellula saturata
345 observations · iNaturalist
Woodland Skipper
Ochlodes sylvanoides
342 observations · iNaturalist
Yellow Velvet Beetle
Lepturobosca chrysocoma
331 observations · iNaturalist
Hayden's Ringlet
Coenonympha haydenii
330 observations · iNaturalist
Mariposa Copper
Tharsalea mariposa
329 observations · iNaturalist
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