Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

BugGuide is a National Moth Week Partner. How to add your National Moth Week 2021 photos. July 17-25.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Previous events


TaxonomyBrowseInfoImagesLinksBooks
Data

Class Arachnida - Arachnids


The information below 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

Hover over black occurrence boxes to see number of images submitted. Log in to make states, months and boxes clickable.
JanFebMarAprMayJunJulAugSepOctNovDec
Alabama3018771331421262202161571415744
Alaska178491021071167742747
Alberta48354611919522018313767434352
Arizona246283518571681769999809531521224137
Arkansas1913491342132051391272441564916
British Columbia1004999274276485387366449386349157
California72577014702026226023091652139611881179803513
Colorado3548931652733443852653221763813
Connecticut421437927953848645141
Delaware4 1827716971789337118
District of Columbia 117841614   
Florida667563690744795892757649480615616753
Georgia666325231142142537328028025915990
Hawaii    2       
Idaho1511940204852434692
Illinois14241502553885524124254542908327
Indiana111532841652481331611381322151
Iowa242939962333443152192311211813
Kansas1412195588117123120177170225
Kentucky94611171823774303753814692628551
Louisiana305910411918712721019512717112247
Maine151148118241608676460115915038
Manitoba52112121704442312 1
Maryland65812585499451017828833912604217130
Massachusetts15015738467610051091848741750528219107
JanFebMarAprMayJunJulAugSepOctNovDec
Michigan14244088174271239194195843422
Minnesota8710072369704500389279791610
Mississippi292580629869685592501821
Missouri234193172323274265218308161734
Montana9111823114791131757649412
Nebraska57245278105676966414 
Nevada11106299111107827260491817
New Brunswick21043621091769883852873
New Hampshire363558163222262208218143864633
New Jersey287414830248856142833138238511785
New Mexico1929641021421991912211821626717
New York326111221964586070863854728110946
Newfoundland/Labrador13771841711475945654
North Carolina95148240480574530538463570414167135
North Dakota9 6163240243017971
Northwest Territories    1172    
Nova Scotia  52513384142321741
Nunavut      93    
Ohio192149178333457326350269168594
Oklahoma63105211295479327396315407323185102
Ontario27351582044317986645424662415927
Oregon95871702233423903063032261768661
Pennsylvania929535273612231260116891180658220228
Prince Edward Island     2322   
Quebec951396230387265304408155394
Rhode Island12668104215112887332 2
JanFebMarAprMayJunJulAugSepOctNovDec
Saskatchewan620339419134423418313073249
South Carolina59393311720914321117615713911453
South Dakota 1111124637491914 3
Tennessee28321002002982632582691731465663
Texas37327579811551134112311931065922997919413
Utah1514841171751792731991881394819
Vermont5152568921121421269160166
Virginia8966190279548522462515573383159103
Washington101197203362581632479416553569145112
West Virginia2142521608043546743181
Wisconsin22106880254518417358326111455
Wyoming16720374048616520413
Yukon Territory    214368