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Western Honey Bee
Apis mellifera
86,968 observations
Monarch
Danaus plexippus
57,716 observations
Seven-spotted Lady Beetle
Coccinella septempunctata
26,655 observations
Convergent Lady Beetle
Hippodamia convergens
25,358 observations
Fiery Skipper
Hylephila phyleus
24,847 observations
White-lined Sphinx
Hyles lineata
23,196 observations
Painted Lady
Vanessa cardui
22,797 observations
Gray Buckeye
Junonia grisea
21,744 observations
Asian Lady Beetle
Harmonia axyridis
21,724 observations
Yellow-faced Bumble Bee
Bombus vosnesenskii
20,276 observations
Gray Bird Grasshopper
Schistocerca nitens
19,887 observations
Small White
Pieris rapae
18,810 observations
Arizona Mantis
Stagmomantis limbata
18,712 observations
Gulf Fritillary
Dione vanillae
18,552 observations
Variable Checkerspot
Euphydryas chalcedona
17,681 observations
Mourning Cloak
Nymphalis antiopa
15,954 observations
Anise Swallowtail
Papilio zelicaon
15,882 observations
Umber Skipper
Lon melane
15,260 observations
Western Tiger Swallowtail
Papilio rutulus
14,976 observations
Gray Hairstreak
Strymon melinus
14,151 observations
Acmon Blue
Icaricia acmon
13,731 observations
Vivid Dancer
Argia vivida
13,202 observations
California Sister
Adelpha californica
12,986 observations
Pipevine Swallowtail
Battus philenor
12,592 observations
Black-tailed Bumble Bee
Bombus melanopygus
12,225 observations
California Gall Wasp
Andricus quercuscalifornicus
11,327 observations
Flame Skimmer
Libellula saturata
11,187 observations
Variegated Meadowhawk
Sympetrum corruptum
11,054 observations
Red Admiral
Vanessa atalanta
10,976 observations
Figeater Beetle
Cotinis mutabilis
10,668 observations
Valley Carpenter Bee
Xylocopa sonorina
10,066 observations
Invasive
Argentine Ant
Linepithema humile
9,909 observations
Marine Blue
Leptotes marina
9,777 observations
Lorquin's Admiral
Limenitis lorquini
9,695 observations
West Coast Lady
Vanessa annabella
9,637 observations
Western Yellowjacket
Vespula pensylvanica
9,177 observations
Common Ringlet
Coenonympha california
8,758 observations
Invasive
Harlequin Bug
Murgantia histrionica
8,652 observations
Spotless Lady Beetle
Cycloneda sanguinea
8,604 observations
Spotted Cucumber Beetle
Diabrotica undecimpunctata
8,592 observations
Mylitta Crescent
Phyciodes mylitta
8,425 observations
Pale Swallowtail
Papilio eurymedon
8,198 observations
Invasive
Dotted Paropsine Leaf Beetle
Paropsis atomaria
7,983 observations
European Mantis
Mantis religiosa
7,963 observations
Pallid-winged Grasshopper
Trimerotropis pallidipennis
7,835 observations
California Tortoiseshell
Nymphalis californica
7,768 observations
Oblique Streaktail
Allograpta obliqua
7,178 observations
Margined Calligrapher
Toxomerus marginatus
7,172 observations
Western Giant Swallowtail
Heraclides rumiko
7,100 observations
Echo Azure
Celastrina echo
7,099 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)
- White-lined Sphinx (Hyles lineata)
- Painted Lady (Vanessa cardui)
- Gray Buckeye (Junonia grisea)
- Asian Lady Beetle (Harmonia axyridis)
- Yellow-faced Bumble Bee (Bombus vosnesenskii)
- The most observed insect in California is Western Honey Bee (Apis mellifera), with 86,968 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)