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Western Honey Bee
Apis mellifera
89,642 observations
Monarch
Danaus plexippus
59,823 observations
Seven-spotted Lady Beetle
Coccinella septempunctata
27,554 observations
Convergent Lady Beetle
Hippodamia convergens
26,172 observations
Fiery Skipper
Hylephila phyleus
25,136 observations
Gray Buckeye
Junonia grisea
23,909 observations
White-lined Sphinx
Hyles lineata
23,741 observations
Painted Lady
Vanessa cardui
23,414 observations
Asian Lady Beetle
Harmonia axyridis
22,349 observations
Yellow-faced Bumble Bee
Bombus vosnesenskii
21,038 observations
Gray Bird Grasshopper
Schistocerca nitens
20,472 observations
Arizona Mantis
Stagmomantis limbata
19,746 observations
Small White
Pieris rapae
19,431 observations
Gulf Fritillary
Dione vanillae
19,065 observations
Variable Checkerspot
Euphydryas chalcedona
18,612 observations
Mourning Cloak
Nymphalis antiopa
16,923 observations
Anise Swallowtail
Papilio zelicaon
16,747 observations
Umber Skipper
Lon melane
15,957 observations
Western Tiger Swallowtail
Papilio rutulus
15,524 observations
Gray Hairstreak
Strymon melinus
14,647 observations
Acmon Blue
Icaricia acmon
14,085 observations
Vivid Dancer
Argia vivida
13,855 observations
Pipevine Swallowtail
Battus philenor
13,711 observations
California Gall Wasp
Andricus quercuscalifornicus
13,589 observations
California Sister
Adelpha californica
13,464 observations
Black-tailed Bumble Bee
Bombus melanopygus
12,392 observations
Flame Skimmer
Libellula saturata
11,716 observations
Red Admiral
Vanessa atalanta
11,382 observations
Variegated Meadowhawk
Sympetrum corruptum
11,190 observations
Figeater Beetle
Cotinis mutabilis
10,704 observations
Marine Blue
Leptotes marina
10,647 observations
Valley Carpenter Bee
Xylocopa sonorina
10,285 observations
Invasive
Argentine Ant
Linepithema humile
10,189 observations
Lorquin's Admiral
Limenitis lorquini
10,136 observations
West Coast Lady
Vanessa annabella
10,125 observations
Western Yellowjacket
Vespula pensylvanica
9,306 observations
California Tortoiseshell
Nymphalis californica
9,305 observations
Spotted Cucumber Beetle
Diabrotica undecimpunctata
9,137 observations
Common Ringlet
Coenonympha california
9,083 observations
Invasive
Harlequin Bug
Murgantia histrionica
9,026 observations
Spotless Lady Beetle
Cycloneda sanguinea
9,021 observations
Mylitta Crescent
Phyciodes mylitta
8,850 observations
Invasive
Dotted Paropsine Leaf Beetle
Paropsis atomaria
8,716 observations
Pale Swallowtail
Papilio eurymedon
8,486 observations
European Mantis
Mantis religiosa
8,180 observations
Pallid-winged Grasshopper
Trimerotropis pallidipennis
8,016 observations
Echo Azure
Celastrina echo
7,436 observations
Oblique Streaktail
Allograpta obliqua
7,404 observations
Margined Calligrapher
Toxomerus marginatus
7,390 observations
Checkered White
Pontia protodice
7,295 observations
Frequently Asked Questions
- The 10 most common insects in California are:
- Western Honey Bee (Apis mellifera)
- Monarch (Danaus plexippus)
- Seven-spotted Lady Beetle (Coccinella septempunctata)
- Convergent Lady Beetle (Hippodamia convergens)
- Fiery Skipper (Hylephila phyleus)
- Gray Buckeye (Junonia grisea)
- White-lined Sphinx (Hyles lineata)
- Painted Lady (Vanessa cardui)
- Asian Lady Beetle (Harmonia axyridis)
- Yellow-faced Bumble Bee (Bombus vosnesenskii)
- The most observed insect in California is Western Honey Bee (Apis mellifera), with 89,642 recorded observations.
- Some of the most commonly observed invasive insects in California include:
- Argentine Ant (Linepithema humile)
- Harlequin Bug (Murgantia histrionica)
- Dotted Paropsine Leaf Beetle (Paropsis atomaria)