Loading species data...
Fetching observations
Invasive
Noble False Widow
Steatoda nobilis
19,216 observations
Bold Jumping Spider
Phidippus audax
13,470 observations
Western Black Widow
Latrodectus hesperus
11,985 observations
Brown Widow
Latrodectus geometricus
11,224 observations
Johnson's Jumping Spider
Phidippus johnsoni
9,291 observations
Silver Garden Orbweaver
Argiope argentata
8,036 observations
Koch's Wolf Spider
Alopecosa kochi
6,545 observations
False Black Widow
Steatoda grossa
6,087 observations
Cross Orbweaver
Araneus diadematus
6,081 observations
Long-bodied Cellar Spider
Pholcus phalangioides
5,677 observations
Western Spotted Orbweaver
Neoscona oaxacensis
5,602 observations
Western Forest Scorpion
Uroctonus mordax
5,583 observations
Invasive
Half-edged Wall Jumping Spider
Menemerus semilimbatus
5,448 observations
Buttonhook Leafbeetle Jumping Spider
Sassacus vitis
5,150 observations
Woodlouse Spider
Dysdera crocata
5,044 observations
Colonus hesperus
Colonus hesperus
4,825 observations
Spotted Orbweaver
Neoscona crucifera
4,651 observations
Marbled Cellar Spider
Holocnemus pluchei
4,366 observations
Western Lynx Spider
Oxyopes scalaris
4,129 observations
Pacific Coast Tick
Dermacentor occidentalis
4,024 observations
Banded Garden Spider
Argiope trifasciata
3,950 observations
California Red Jumping Spider
Phidippus adumbratus
3,672 observations
Green Lynx Spider
Peucetia viridans
3,540 observations
Habronattus pyrrithrix
Habronattus pyrrithrix
3,366 observations
Gray Wall Jumping Spider
Menemerus bivittatus
3,251 observations
Grey House Spider
Badumna longinqua
3,189 observations
California Turret Spider
Atypoides riversi
2,801 observations
Yellow Garden Spider
Argiope aurantia
2,755 observations
Desert Tarantula
Aphonopelma iodius
2,693 observations
California common scorpion
Paruroctonus silvestrii
2,574 observations
Western Black-legged Tick
Ixodes pacificus
2,377 observations
Invasive
Mediterranean Spiny False Wolf Spider
Zoropsis spinimana
1,929 observations
Goldenrod Crab Spider
Misumena vatia
1,918 observations
False Tarantula
Calisoga longitarsis
1,720 observations
Live Oak Erineum Mite
Aceria mackiei
1,656 observations
Paravaejovis puritanus
Paravaejovis puritanus
1,632 observations
South American Toothed Hacklemesh Weaver
Metaltella simoni
1,604 observations
Ribbon Jumping Spider
Metacyrba taeniola
1,599 observations
Western Parson Spider
Herpyllus propinquus
1,560 observations
Striped Lynx Spider
Oxyopes salticus
1,482 observations
California Swollenstinger Scorpion
Anuroctonus pococki
1,482 observations
Steindachner's Ebony Tarantula
Aphonopelma steindachneri
1,376 observations
Zebra Jumping Spider
Salticus scenicus
1,370 observations
California Ebony Tarantula
Aphonopelma eutylenum
1,302 observations
Dune Scorpion
Smeringurus mesaensis
1,105 observations
California Trapdoor Spider
Bothriocyrtum californicum
1,096 observations
American Dog Tick
Dermacentor variabilis
1,088 observations
Desert Hairy Scorpion
Hadrurus arizonensis
1,078 observations
Sawfinger Scorpion
Serradigitus gertschi
1,041 observations
California Black Walnut Pouch Gall Mite
Aceria brachytarsa
1,037 observations
Frequently Asked Questions
- The 10 most common arachnids in California are:
- Noble False Widow (Steatoda nobilis)
- Bold Jumping Spider (Phidippus audax)
- Western Black Widow (Latrodectus hesperus)
- Brown Widow (Latrodectus geometricus)
- Johnson's Jumping Spider (Phidippus johnsoni)
- Silver Garden Orbweaver (Argiope argentata)
- Koch's Wolf Spider (Alopecosa kochi)
- False Black Widow (Steatoda grossa)
- Cross Orbweaver (Araneus diadematus)
- Long-bodied Cellar Spider (Pholcus phalangioides)
- The most observed arachnid in California is Noble False Widow (Steatoda nobilis), with 19,216 recorded observations.
- Some of the most commonly observed invasive arachnids in California include:
- Noble False Widow (Steatoda nobilis)
- Half-edged Wall Jumping Spider (Menemerus semilimbatus)
- Mediterranean Spiny False Wolf Spider (Zoropsis spinimana)
- Some of the most commonly observed native arachnids in California include:
- California Turret Spider (Atypoides riversi)
- California Ebony Tarantula (Aphonopelma eutylenum)
- Sawfinger Scorpion (Serradigitus gertschi)