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California Tortoiseshell
Nymphalis californica
757 observations
Western Honey Bee
Apis mellifera
713 observations
Spotted Tussock Moth
Lophocampa maculata
690 observations
Vancouver Bumble Bee
Bombus vancouverensis
673 observations
Hunt's Bumble Bee
Bombus huntii
659 observations
Western Conifer Seed Bug
Leptoglossus occidentalis
655 observations
European Mantis
Mantis religiosa
644 observations
Western Tent Caterpillar Moth
Malacosoma californica
616 observations
Mourning Cloak
Nymphalis antiopa
594 observations
White-spotted Sawyer
Monochamus scutellatus
575 observations
Leafy Spurge Hawkmoth
Hyles euphorbiae
523 observations
Two-striped Grasshopper
Melanoplus bivittatus
492 observations
Lorquin's Admiral
Limenitis lorquini
475 observations
Police Car Moth
Gnophaela vermiculata
465 observations
Essex Skipper
Thymelicus lineola
461 observations
Common Wood-Nymph
Cercyonis pegala
439 observations
Green Comma
Polygonia faunus
426 observations
Milbert's Tortoiseshell
Aglais milberti
409 observations
Asian Lady Beetle
Harmonia axyridis
395 observations
Painted Lady
Vanessa cardui
359 observations
Seven-spotted Lady Beetle
Coccinella septempunctata
359 observations
Field Crescent
Phyciodes pulchella
351 observations
Small White
Pieris rapae
350 observations
Common Drone Fly
Eristalis tenax
341 observations
Mormon Fritillary
Argynnis mormonia
325 observations
Boisduval's Blue
Icaricia icarioides
324 observations
Eastern Boxelder Bug
Boisea trivittata
321 observations
Great Spangled Fritillary
Argynnis cybele
318 observations
Two-tailed Swallowtail
Papilio multicaudata
306 observations
Invasive
Knapweed Root Moth
Agapeta zoegana
305 observations
Ornate Checkered Beetle
Trichodes ornatus
295 observations
Woodland Skipper
Ochlodes sylvanoides
293 observations
Common Alpine
Erebia epipsodea
285 observations
White-lined Sphinx
Hyles lineata
284 observations
Nevada Bumble Bee
Bombus nevadensis
284 observations
Anise Swallowtail
Papilio zelicaon
279 observations
Western Tiger Swallowtail
Papilio rutulus
274 observations
Satyr Comma
Polygonia satyrus
268 observations
Hoary Comma
Polygonia gracilis
263 observations
Small Wood-Nymph
Cercyonis oetus
261 observations
Clouded Sulphur
Colias philodice
255 observations
Western White
Pontia occidentalis
252 observations
Bald-faced Hornet
Dolichovespula maculata
251 observations
Mariposa Copper
Tharsalea mariposa
250 observations
Pale Swallowtail
Papilio eurymedon
247 observations
Indiscriminate Cuckoo Bumble Bee
Bombus insularis
247 observations
Half-black Bumble Bee
Bombus vagans
229 observations
Transverse Lady Beetle
Coccinella transversoguttata
226 observations
Invasive
Bronze Ground Beetle
Carabus nemoralis
225 observations
Rocky Mountain Parnassian
Parnassius smintheus
216 observations
Frequently Asked Questions
- The 10 most common insects in Montana are:
- California Tortoiseshell (Nymphalis californica)
- Western Honey Bee (Apis mellifera)
- Spotted Tussock Moth (Lophocampa maculata)
- Vancouver Bumble Bee (Bombus vancouverensis)
- Hunt's Bumble Bee (Bombus huntii)
- Western Conifer Seed Bug (Leptoglossus occidentalis)
- European Mantis (Mantis religiosa)
- Western Tent Caterpillar Moth (Malacosoma californica)
- Mourning Cloak (Nymphalis antiopa)
- White-spotted Sawyer (Monochamus scutellatus)
- The most observed insect in Montana is California Tortoiseshell (Nymphalis californica), with 757 recorded observations.
- Some of the most commonly observed invasive insects in Montana include:
- Knapweed Root Moth (Agapeta zoegana)
- Bronze Ground Beetle (Carabus nemoralis)