USA Spider Identification

Did you find a spider in the U.S and you would like to identify it? Then you are at the right place. This page will help you identify your spider. Simply read through the content on this site and answer the questions below, and you will hopefully identify your spider. If not, you can still reach out to us (more details below).

Are you dealing with a venomous spider?

Let’s first start off by eliminating the possibility that you are dealing with a potentially dangerous spider. There are only two medically significant spider genera in the United States: Widows and recluse spiders. Look at the following pictures below. Does your spider look like any of these? If yes or if you are unsure, click on the pictures to see more pictures and learn more about the venomous spiders and their range in the U.S.:

Loxosceles reclusa - brown recluse spider full body pictureAdult_Female_Black_WidowBrown_widow_spider_Latrodectus_geometricus_underside
A small brown spider in the Southern U.S. with thin long legs and a violin shape on its back may be a brown recluse.A small black spider with a round abdomen and red (hourglass-shaped) markings may be a black widow.A small brown spider with a round abdomen and red (hourglass-shaped) markings may be a brown widow.

If your spider doesn’t look like yours – Great! Then you are most likely dealing with a harmless spider. Let’s identify it!

USA Spider Identification Tool

Please answer the questions below and you will get one or more possible results based on your answers. In a few rare cases, you might get no result. If this happens, you could try the spider identification tool over again or upload your spider pictures in the comment section below, so we can identify it for you. You are also welcome to leave a comment or feedback about the spider identificator (criticism is also welcome, we are working hard to improve).

In what state did you find the spider?
Which one of these looks most similar to your spider? You can select multiple answers
Focus more on the general appearance, not the exact colors and patterns. If more than one of the images look like your spider, select multiple answes. If the spider doesn't look like any of those, choose the question mark.
  • Juvenile spiders can have white or red markings on their back
  • Wolf spider
  • Nusery web spider
What size is the spider you found? Compared to a 1 Dollar coin
What size is the body (not leg span) in comparison with a one dollar coin (1 inch in diameter). Try to focus only on the body. Some spiders may seem huge with long legs but in reality they might have a small body.
Did you notice a spider web?
What is the primary color of the spider
Focus on the main colors of the body (not legs) of the spider. If you think there are more than one primary colors, select both. Do not look at dots, stripes or other markings in a secondary color. These will be asked in the next question. If you think the spider has more than one secondary colors, select both.
Secondary colors or markings
Does the spider have any characteristic markings in a color? Select this color (e.g. red dots on the body, yellow bands around the legs or body, etc.). You can select multiple colors.
What color pattern are the legs?
Nevermind the colors in the images. Select the pattern that comes closest to your spider.
Let's talk more about the legs. How long are they?
Compare the legth of the legs with the length of the body.
What shape is the spider? You can select multiple answers
Select the shape that comes closest to your spider. You can select multiple answers if you are uncertain.
Did you see any spinnerets on the abdomen of the spider?
Spinnerets are the silk-spinning organs of spiders. Some spiders have visible spinnerets on their back (two small spines).
Is the spider hairy?
Check Answers

Did the tool not help you to (correctly) identify your spider? Let us help you identify your spider!

Did you also look through the list of common spiders for your state on this site and didn’t find any information?

Simply upload a picture of your spider as a comment to this post below in the “Leave a reply” section at the bottom of the page – no sign-up or login necessary. Along with the photograph, please add the following information:

  1. Description of the spider (helps with the identification but is not mandatory)
  2. City and U.S. State where the spider was found
  3. Your name how you want to be credited on our website

By uploading a picture, you are giving us permission to use the picture on this site. Please only upload pictures you own the copyright to. Do not upload pictures taken from other web sources without proper crediting. Any pictures we use, we will place your name and city where it was found beneath the picture as the photographer.

When uploading your picture, you are required to enter your email address. Your email address will not be posted publicly. As soon as we have found an ID for your spider, you will be notified by email to the email address provided by you.

Taking the perfect picture of your spider

The more detail can be seen, the better. It is easiest for others or for us to identify your spider if the photograph is taken from the top of the spider. If both body parts, the colors, and the markings are visible, it will go a long way to getting the spider correctly identified. If you have a good camera and are not afraid to get a good close macro shot of its eye pattern, that can also help immensely. Some species can only be distinguished by a close look at their eye patterns.

Please upload the picture as its own file to the comment form below. Our upload form allows all standard image files up to a size of 15 MB. It is not possible to upload .zip files or more than one picture per upload. If you have more than one picture of your spider sighting, please upload them separately and copy the description text including the location along with it.

Backup: Email contact of USAspiders.com

If for some reason, the upload form doesn’t work or you prefer that your spider picture is not published publicly, you can email us with the information to [email protected] and we will get back to you with an ID via email. However, we do prefer that you upload your picture in the comment form below as it will benefit all our readers.

USA Spider Identification

66 thoughts on “USA Spider Identification

  1. I came across this iridescent looking spider inside at work a couple months ago. Not sure what kind it is, but absolutely mesmerized by its beauty! This is located in Spartanburg, SC.

  2. This spider was seen by the Guadalupe river crawling on the rocks. Grey and white and brown color. Approximately 4 inches with legs. I can’t narrow it down but probably in the wolf family? Thank you for your help.

  3. Found this cutie on my chicken coop. I said hi. Looks like it has sawdust all over it. In Loudon, TN. Any idea of what this little thing is? About the size of a dime. Thanks.

  4. To anyone who can help….
    I found this spider about a foot down in the dirt while digging a hole after a fairly good rain this weekend. I live in Watsonville, California.
    Now while this spider is quite large in size compared to most all spiders around here that would be seen in the wild and/or in your home, this is definitely not the biggest of this species I have seen. I have caught and released at least two or three others of this same exact species, solid in color, which is a very dark grey. Absolutely no hair on the body that I can tell, with very very little hair on the legs which I can only see zooming in with camera.
    Oh they are also VERY agressive, rearing up when in defense with the 4 front legs up in the air and big black fangs very visible. When holding a jar with one of these contained, it would pounce at the bottom of jar towards my hand with lightning speed.
    I don’t know if venomous or not, but even if it’s not, the bite looks like it would hurt very very badly. I really don’t think it’s a Tarantula but I could be wrong.
    Any help is appreciated, thank you!

  5. Hi
    My garden spider is long gone but she left an egg nest it’s on the concrete building at work it’s not out of the elements or sheltered at all I’m wondering if I should attempt to relocate it?

    1. Here is the picture of the egg sack on the building at work. Should I try to relocate it somewhere safer? I posted earlier but picture didn’t show up

      1. Hello Krissy, this egg sac looks unusually flat for a banded garden spider. It’s usually safe to relocate them. You can use a broom and place it in some bushes off the ground.

  6. Hi there – found a spider inside my southern California house (Los Angeles). My painter couldn’t identify it and advised I figure out if it was poisonous because then I’ll have to fumigate my house.
    It was about an inch long with longer legs than the body. Legs were pretty skinny.

    Thanks for any help!
    Abbey

  7. sorry the picture is a little blurry. i can’t find any thing on google that looks like this at all. found inside in western north carolina

  8. Please help me identify this soider it was caught right next to my 2 year old sons bed
    los angeles california

  9. Found this spider outside next to my plants. Not sure what kind it is. My dad found it and swears he’s going to keep it. Can anyone identify it? It’s fairly large and it’s back has brown lines all around. Pretty funky looking

  10. Found this little thing laying flat. Thought it was dead at first but it then moved. Between 1/8th inch and 1/4 inch in size

  11. I feel badly that I took this spiders life, but I’ve never seen one like this, inside my house on the floor in the dark. The reddish tinge was the primary color, but also black and yellow- white in other body parts. It was larger in body size than what I’ve seen with the typical daddy long legs, the legs are curled up so hard to discern size but body is approx 1/2 “… any ideas of this spider is venomous!? Pics are of top and bottom of spider.

  12. I found this spider in a wall inside the house and have seen it in the garden also in Ontario CA. It has a brown color with a darker reddish brown thorax. The leg span is around 0.5 inches.

  13. Found this spider under my camper when I was packing to leave. Southern part of New Mexico at Leaseburg State park NM. I was in a hurry to leave and used my phone with max zoom for the picture. My guess would be the body was about an inch

  14. Saw this spider indoors on a wall. Boulder, Colorado, November 11, 2021. Centimeter or so long. No web, just walking on the wall. It is hairier than any of the spiders you have suggested. Google thinks it is a tarantula. What is it?

  15. Boulder, Colorado, November, 2021, inside, on a window ledge. So far has resisted 2 runs through your identification algorithm. First time I have taken a picture that so clearly showed all 8 eyes, incidentally, tho it appears to have something in its eye, so to speak.

  16. Portland, Oregon
    Dwells above door or in ceiling corner in laundry room in invisible web. Slightly larger than a quarter, tan or yellow, banded legs, pattern on abdomen, long front and back legs, short 3rd set of legs
    -Ali

    1. That looks/sounds exactly like the spider in our window in NJ, that we are trying to identify! If you get an answer, I’d appreciate a reply to my reply so I know it.

  17. Burbank, California. I found this very striking spider on an umbrella pole on my patio. This is just one day after I found what almost had to be a brown recluse in my bathroom, at least no other brown recluse look-alike I could find online looked more like my spider (from yesterday) than the brown recluse images. Today’s spider has a body just over half an inch long.

  18. Found in my garage. Body is about the size of a quarter. Looks like a black widow but doesn’t have any red markings.

  19. Oklahoma City, OK
    Pretty sure that this is a black widow. It was in my garage. Roughly the size of a quarter. It has since shuffled off its mortal coil.

  20. This spider is in a web in our window (upstairs) in northern NJ; we’re trying to determine if it’s dangerous. Unfortunately its location makes is impossible to get a good picture; I got one from its underside (through the window) and one (with difficulty) from the side. Your system appears only to allow one picture, so I will make two posts to provide both.

    It’s very large for NJ; bigger than a quarter as positioned (not fully stretched.) Light brown with very dark leg bands. Can’t glimpse any distinctive markings on top. Help identifying would be much appreciated!

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