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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
Alabama1431439311157949412212
Alaska185 211913  1 
Alberta  3123239296516272
Arizona433256741221591311471251113318
Arkansas1516113030202735199 
British Columbia41719394721412021113
California6995194293265299334396305341203118
Colorado 413815293938753752
Connecticut1  81812918732 
Delaware  762114191023312
District of Columbia      111   
Florida133131131190272287251221169200244162
Georgia106988112711011411273784011
Idaho    44371071 
Illinois1 9394410084819339111
Indiana  661323242728122 
Iowa  13193418289161251
Kansas  4152023353034711
Kentucky   595827251511
Louisiana616532967554777489910138
Maine    12035591411 
Manitoba    15423   
Maryland1291530767398545231132
Massachusetts2842912603183002952552621938423
Michigan881321387651458521162
Minnesota  205164470372517  
Mississippi2112614066361928672577
Missouri3 31749352439671692
Montana 114 1418614910713
Nebraska  1 21711162111  
Nevada 1 296361018  
New Brunswick   2 5287   
New Hampshire15103238566431904225146
New Jersey  12414093457296106256
New Mexico 1 813102720361565
New York  1819406091727937182
Newfoundland/Labrador 372863668327942 
North Carolina184459121104123113881341133622
North Dakota      1   1 
Nova Scotia     11231  
Ohio5 12029906384694630 
Oklahoma52731279616568117901221449378
Ontario22163550926866502563
Oregon6493294898059301773
Pennsylvania6217639810810973937418 
Quebec  141431394849111 
Rhode Island 11261619126101  
Saskatchewan2  313266135  1
South Carolina3 21415284322253568
South Dakota    539 72   
Tennessee621828886159112402582
Texas2618741011151241711191491749232
Utah47182244395844482274
Vermont  2122623274517265 
Virginia12233270777197137124925134
Washington2446551311621781751082582873830
West Virginia 12199612131625712 
Wisconsin1 618491117790102403 
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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