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California Tortoiseshell
Nymphalis californica
698 observations
Western Honey Bee
Apis mellifera
688 observations
Vancouver Bumble Bee
Bombus vancouverensis
668 observations
Hunt's Bumble Bee
Bombus huntii
657 observations
Spotted Tussock Moth
Lophocampa maculata
628 observations
Western Tent Caterpillar Moth
Malacosoma californica
610 observations
Western Conifer Seed Bug
Leptoglossus occidentalis
593 observations
Mourning Cloak
Nymphalis antiopa
586 observations
European Mantis
Mantis religiosa
567 observations
White-spotted Sawyer
Monochamus scutellatus
567 observations
Leafy Spurge Hawkmoth
Hyles euphorbiae
520 observations
Two-striped Grasshopper
Melanoplus bivittatus
479 observations
Lorquin's Admiral
Limenitis lorquini
472 observations
Essex Skipper
Thymelicus lineola
460 observations
Police Car Moth
Gnophaela vermiculata
460 observations
Common Wood-Nymph
Cercyonis pegala
437 observations
Green Comma
Polygonia faunus
419 observations
Milbert's Tortoiseshell
Aglais milberti
405 observations
Asian Lady Beetle
Harmonia axyridis
384 observations
Seven-spotted Lady Beetle
Coccinella septempunctata
349 observations
Field Crescent
Phyciodes pulchella
348 observations
Small White
Pieris rapae
347 observations
Painted Lady
Vanessa cardui
346 observations
Mormon Fritillary
Argynnis mormonia
324 observations
Boisduval's Blue
Icaricia icarioides
321 observations
Great Spangled Fritillary
Argynnis cybele
316 observations
Invasive
Knapweed Root Moth
Agapeta zoegana
305 observations
Common Drone Fly
Eristalis tenax
301 observations
Two-tailed Swallowtail
Papilio multicaudata
296 observations
Ornate Checkered Beetle
Trichodes ornatus
293 observations
Common Alpine
Erebia epipsodea
285 observations
Woodland Skipper
Ochlodes sylvanoides
283 observations
White-lined Sphinx
Hyles lineata
282 observations
Anise Swallowtail
Papilio zelicaon
279 observations
Western Tiger Swallowtail
Papilio rutulus
273 observations
Eastern Boxelder Bug
Boisea trivittata
270 observations
Hoary Comma
Polygonia gracilis
261 observations
Nevada Bumble Bee
Bombus nevadensis
261 observations
Satyr Comma
Polygonia satyrus
260 observations
Small Wood-Nymph
Cercyonis oetus
260 observations
Mariposa Copper
Tharsalea mariposa
249 observations
Clouded Sulphur
Colias philodice
247 observations
Pale Swallowtail
Papilio eurymedon
245 observations
Bald-faced Hornet
Dolichovespula maculata
244 observations
Western White
Pontia occidentalis
242 observations
Half-black Bumble Bee
Bombus vagans
224 observations
Invasive
Bronze Ground Beetle
Carabus nemoralis
221 observations
Rocky Mountain Parnassian
Parnassius smintheus
215 observations
Common Ringlet
Coenonympha california
213 observations
Indiscriminate Cuckoo Bumble Bee
Bombus insularis
213 observations
Frequently Asked Questions
- The 10 most common insects in Montana are:
- California Tortoiseshell (Nymphalis californica)
- Western Honey Bee (Apis mellifera)
- Vancouver Bumble Bee (Bombus vancouverensis)
- Hunt's Bumble Bee (Bombus huntii)
- Spotted Tussock Moth (Lophocampa maculata)
- Western Tent Caterpillar Moth (Malacosoma californica)
- Western Conifer Seed Bug (Leptoglossus occidentalis)
- Mourning Cloak (Nymphalis antiopa)
- European Mantis (Mantis religiosa)
- White-spotted Sawyer (Monochamus scutellatus)
- The most observed insect in Montana is California Tortoiseshell (Nymphalis californica), with 698 recorded observations.
- Some of the most commonly observed invasive insects in Montana include:
- Knapweed Root Moth (Agapeta zoegana)
- Bronze Ground Beetle (Carabus nemoralis)