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Home » Guide » Arthropods (Arthropoda) » Arachnids (Arachnida)

Class Arachnida - Arachnids


The following data is based on images submitted and identified by contributors. Range and date information may be incomplete, overinclusive, or just plain wrong.

Contributed Images Map No Images   Images
Range map for Arachnids
Credits: Generated with MapServer. BugGuide integration kindly provided by Mike Boone.

JanFebMarAprMayJunJulAugSepOctNovDec
Alabama1431439311157947411512
Alaska185 211913  1 
Alberta  3123239296316272
Arizona433256741221591271461251113318
Arkansas1516113030202735179 
British Columbia41719394721402019113
California6991192292265299332397305317153118
Colorado 413815293938753632
Connecticut1  81812918742 
Delaware  762114191023312
District of Columbia      11    
Florida133131131190272287251223169184236162
Georgia106988112711011411370723411
Hawaii  4         
Idaho    44371071 
Illinois1 93944988481933671
Indiana  661323242728122 
Iowa  13193418289161241
Kansas  4152023332234711
Kentucky   595827251511
Louisiana61653296755477748999538
Maine    12035591411 
Manitoba    15443   
Maryland1291530767398554924102
Massachusetts2842912603182982902552591938123
Michigan881321387651458519132
Minnesota  205164370372517  
Mississippi2112614066361928672877
Missouri3 31749352438661592
Montana 114 1418614910713
Nebraska  1 2171116218  
Nevada 1 296361018  
New Brunswick   2 5287   
New Hampshire15103238566331904225136
New Jersey  12394096457193102196
New Mexico 1 813102720361555
New York  181940609172783582
Newfoundland/Labrador 372863668327942 
North Carolina184459121104123113881341133322
North Dakota      1   1 
Nova Scotia     11231  
Ohio5 12029906384694229 
Oklahoma52731279616568117901221417978
Ontario22163550926665462533
Oregon6493294897259301163
Pennsylvania6213639810810868947511 
Quebec  141431394849111 
Rhode Island 11261619126101  
Saskatchewan2  31326535  1
South Carolina3 21415284322253528
South Dakota    539 72   
Tennessee621828886159112402572
Texas2618741011151241711181491737232
Utah47182244395844482274
Vermont  2122623274517265 
Virginia12233270777197137124904334
Washington2446551311621751701082552873430
West Virginia 12199612131625712 
Wisconsin1 618491117791102403 
Wyoming   1235 52  

Disclaimer: Dedicated naturalists volunteer their time and resources here to provide this service. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. If you need expert professional advice, contact your local extension office.

Contributors own the copyright to and are solely responsible for contributed content.
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