51 Types of Scorpions in California

51 types of scorpions have a verified observation record in California. The most frequently recorded are Western Forest Scorpion, California common scorpion and Paravaejovis puritanus. Here is the full list, ranked by how often each is reported on iNaturalist.

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51 types of scorpions have a verified observation record in California. The most frequently recorded are Western Forest Scorpion, California common scorpion and Paravaejovis puritanus. Here is the full list, ranked by how often each is reported on iNaturalist.

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Real sighting data, source iNaturalist

23,267 verified observations on iNaturalist of scorpion have been recorded in California, most often in May, April, September.

When scorpion are recorded in California

Verified species, source iNaturalist

51 types of scorpions recorded in California

51 scorpion species have a verified observation record in California, each with at least 10 confirmed sightings. The 50 most frequently recorded are shown below.

1 of the 50 shown is endemic to California, found here and effectively nowhere else.

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    1

    Western Forest Scorpion

    Uroctonus mordax

    6,028 recordsNative
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    2

    California common scorpion

    Paruroctonus silvestrii

    2,625 records
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    3

    Paravaejovis puritanus

    Paravaejovis puritanus

    1,647 records
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    4

    California Swollenstinger Scorpion

    Anuroctonus pococki

    1,431 records
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    5

    Sawfinger Scorpion

    Serradigitus gertschi

    1,230 recordsNative
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    6

    Dune Scorpion

    Smeringurus mesaensis

    1,188 records
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    7

    Desert Hairy Scorpion

    Hadrurus arizonensis

    1,070 recordsNative
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    8

    Dune Devil Scorpion

    Paravaejovis waeringi

    658 records
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    9

    Smeringurus vachoni

    Smeringurus vachoni

    546 records
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    10

    Superstition Mountains Scorpion

    Superstitionia donensis

    453 records
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    11

    Graemeloweus iviei

    Graemeloweus iviei

    411 recordsNative
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    12

    Yellow Devil Scorpion

    Paravaejovis confusus

    401 records

Also recorded in California

#SpeciesRecords
13Northern ScorpionParuroctonus boreus380
14Beck's Desert ScorpionParuroctonus becki257
15Catalinia thompsoniCatalinia thompsoni222
16Uroctonites montereusUroctonites montereus209
17Kovarikia williamsiKovarikia williamsi186
18Stahnkeus subtilimanusNativeStahnkeus subtilimanus157
19Anza-Borrego Hairy ScorpionNativeHadrurus anzaborrego154
20Kovarikia oxyKovarikia oxy146
21Kovarikia angelenaKovarikia angelena131
22Catalinia castaneaCatalinia castanea127
23Catalinia minimaCatalinia minima112
24Catalinia andreasCatalinia andreas102
25Hadrurus obscurusHadrurus obscurus91
26Serradigitus joshuaensisSerradigitus joshuaensis78
27Paruroctonus variabilisParuroctonus variabilis75
28Black Hairy ScorpionNativeHadrurus spadix71
29Monterey Dunes ScorpionParuroctonus maritimus69
30Mojave Dunes ScorpionParuroctonus arenicola66
31Kochius hirsuticaudaKochius hirsuticauda61
32Graemeloweus glimmeiNativeGraemeloweus glimmei60
33Eastern Swollenstinger ScorpionAnuroctonus phaiodactylus51
34Stahnkeus deserticolaStahnkeus deserticola48
35Paruroctonus xanthusParuroctonus xanthus40
36Paruroctonus bantaiParuroctonus bantai35
37Soda Lake ScorpionParuroctonus soda34
38Paruroctonus luteolusParuroctonus luteolus33
39Borrego Sand ScorpionParuroctonus borregoensis31
40Arizona Bark ScorpionNativeCentruroides sculpturatus22
41Tulare Basin ScorpionParuroctonus tulare21
42Serradigitus wupatkiensisSerradigitus wupatkiensis19
43Serradigitus torridusSerradigitus torridus18
44Serradigitus gramenestrisEndemicSerradigitus gramenestris17
45Uroctonus franckeiUroctonus franckei16
46Kovarikia savaryiKovarikia savaryi16
47Paruroctonus hirsutipesParuroctonus hirsutipes13
48Kovarikia bogertiKovarikia bogerti10
49Paruroctonus marksiParuroctonus marksi10
50Catalinia ayreyiCatalinia ayreyi10

Plus 1 more established scorpions species beyond the top 50. And 12 more recorded only rarely (fewer than 10 verified sightings). Counts from verified iNaturalist observations.

The Western Forest Scorpion (Uroctonus mordax) is the most commonly recorded, with 6,028 verified observations, about 29% of all scorpions reported in California. If you spot a scorpion here, it is statistically most likely to be this one.

California also hosts less common scorpions such as Hadrurus obscurus, Serradigitus joshuaensis and Paruroctonus variabilis, each recorded fewer than 100 times. These are the species worth a second look when you are out, since a sighting is more notable.

Serradigitus gramenestris is endemic to California, meaning it is found here and effectively nowhere else. Those are the sightings worth reporting.