Arrow Shaped Micrathena Spider: Your Quick Guide to Discovery

The Arrow Shaped Micrathena Spider is a fascinating little creature that is native to various regions in North America.

Known for its distinct arrow-shaped body, this intriguing orb weaver spider is quite easy to identify.

As a type of spiny orb weaver, the Arrow Shaped Micrathena spins intricate, circular webs in which it rests and catches prey.

Source: Judy GallagherCC BY 2.0, via Wikimedia Commons

Arrow Shaped Micrathena Spider Basics

Scientific Classification

The Arrow Shaped Micrathena Spider, scientifically known as Micrathena sagittata, belongs to the following classification:

  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Arachnida
  • Order: Araneae
  • Family: Araneidae
  • Genus: Micrathena

Physical Description

Arrow Shaped Micrathena Spiders are orb-weavers known for their distinct appearance.

The females showcase striking reddish, black, and yellow colors with a yellow abdomen.

They also have three pairs of tubercles tipped with black and red. The large pair of tubercles at the back resembles an arrow shape, giving the spider its name.

Males, on the other hand, are small and rarely seen, with less vibrant coloration compared to females.

Arrow Shaped Micrathena Spider
Arrow-Shaped Micrathena

Distribution and Habitat

Arrow Shaped Micrathena Spiders are found in various habitats, including forests, parks, and wooded areas.

They are most commonly spotted in the Eastern United States, from Florida to New England, and as far west as Texas.

They create intricate, circular webs and are often seen resting in the center of their webs.

Appearance and Characteristics

Abdomen Structure

The Arrow Shaped Micrathena Spider, an orbweaver, is known for its unique and distinct abdomen structure.

Its triangular or “arrow-shaped” abdomen is mostly observed in females, while males are smaller and rarely seen.

Pointy Tubercles

  • Three pairs of tubercles
  • Tipped with black and red at the base
  • The pair of tubercles at the back end forms two corners of the triangular shape

The abdomen has pointy tubercles that add to its peculiar appearance.

There are three pairs of tubercles with the pair at the back end of the abdomen being rather large, forming two corners of the triangular shape.

These tubercles are tipped with black and red at the base, contributing to the spider’s striking appearance.

Pointy Tubercles
Source: Judy GallagherCC BY 2.0, via Wikimedia Commons

Color Variation

  • Reddish, black, and yellow colors
  • Top surface of the abdomen is yellow
  • Colors mostly observed in females

The Arrow Shaped Micrathena Spider exhibits a beautiful color variation, with reddish, black, and yellow colors.

The top surface of the abdomen is predominantly yellow, with the other colors appearing as accents.

These color features are predominantly seen in females, while males, being smaller, are not as noticeable.

Life Cycle and Behavior

Spiderlings

Arrow Shaped Micrathena spiders start as eggs laid by the female spider.

After hatching, these tiny spiderlings go through several stages called instars before becoming adults.

Diet and Feeding Habits

These orb-weaving spiders catch their prey, typically insects, using their intricate, circular webs.

They are not venomous to humans, but their venom effectively paralyzes their prey.

Lifespan

Quick Fact: The lifespan of an Arrow Shaped Micrathena spider is about one year.

They progress from eggs to spiderlings and ultimately adults within this time frame.

Mating and Reproduction

The male Arrow Shaped Micrathena, which are smaller and less colorful than females, approach females for mating.

After mating, the female lays eggs and encases them in protective silk capsules.

Comparison Table: Arrow Shaped Micrathena vs. Triangle Orbweaver

Arrow Shaped MicrathenaTriangle Orbweaver
Yellow abdomen with black and red tuberclesCarapace and legs can be black, brown, or rusty red
Webs are usually low to the groundWebs are often higher off the ground
Primary habitat is deciduous forestsCan be found in various habitats, including woods and meadows

Web Construction

Orbweavers’ Circular Webs

The Arrow Shaped Micrathena Spider is an orbweaver, meaning it constructs intricate circular webs.

These webs are primarily built by females, who are often observed resting in them.

Sticky Strands

These spiders use sticky strands to capture prey.

The webs are a marvel of engineering, providing a strong and efficient means of capturing insects for sustenance.

Arrow Shaped Micrathena Spider
Intricate circular web. Source: Flickr, Username: Glen Peterson

Defensive Features

Some features of Micrathena webs serve defensive purposes as well. For instance:

  • Coloration: The striking reddish, black, and yellow colors of the Arrow Shaped Micrathena can deter predators.
  • Tubercles: Females have 3 pairs of tubercles on their abdomen, tipped with black and red, adding to their unique appearance.
FeatureArrow Shaped MicrathenaTypical Orbweaver
Web shapeCircularCircular
Web constructionSticky strandsSticky strands
Main buildersFemalesFemales
Defensive featuresColoration & tuberclesColoration

Regional Distribution

Eastern United States

The Arrow Shaped Micrathena is common in the Eastern United States, where it spins intricate, circular webs. It is mostly found in woodland areas 1.

Central America

In Central America, the Arrow Shaped Micrathena is also found but in lesser numbers compared to the Eastern United States.

Missouri

In Missouri, the Arrow Shaped Micrathena is observed resting in its webs commonly. Females have striking reddish, black, and yellow colors.

They sport 3 pairs of tubercles, tipped with black and red at the base 2.

Mexico

As for Mexico, information about the Arrow Shaped Micrathena distribution is limited.

However, it is expected to be found in areas with similar ecosystems to those where it thrives in the Eastern United States and Central America.

Species Variations

White and Black Micrathena

The White and Black Micrathena is a type of orb-weaver spider.

It has a unique combination of white and black coloring on its body. Some key features of this spider include:

  • Black legs
  • Striking black and white pattern on the abdomen

This species is known for spinning intricate, circular webs where they commonly rest 1.

Black Micrathena
Source: Judy GallagherCC BY 2.0, via Wikimedia Commons

Spined Micrathena

Another variation is the Spined Micrathena. This spider has pointy, conical tubercles on its body, giving it a “spiny” appearance. Distinctive traits include:

  • Glossy black legs
  • Combination of black, red, and yellow colors on the abdomen

The Spined Micrathena spins circular webs, like other orb-weavers 2.

White Micrathena

The White Micrathena is another orb-weaver species that exhibits a predominantly white coloration. Key characteristics are:

  • White abdomen
  • Brightly colored tubercles, possibly red or yellow

This spider also creates circular webs where it rests 3.

Comparison Table

SpeciesColorWebTubercles
White & BlackWhite and blackCircularNo
Spined MicrathenaBlack, red, and yellowCircularPointy, conical
White MicrathenaPredominantly whiteCircularColored (red or yellow)

Is The Arrow Shaped Micrathena Spider Dangerous?

No, the Arrow-shaped Micrathena spider (Micrathena sagittata) is not considered dangerous to humans.

While it has a distinctive appearance with its arrowhead-shaped abdomen and spiky projection, its bite is not known to cause significant harm to humans.

Like many orb-weaver spiders, its primary prey is small insects that become caught in its web.

As with any spider, it’s a good practice to avoid handling them to prevent accidental bites or reactions, but overall, the Arrow-shaped Micrathena is not a spider of concern in terms of human safety.

What Does The Arrow Shaped Micrathena Eat?

The Arrow-shaped Micrathena spider primarily feeds on small insects that become ensnared in its web.

These could include various flying insects like flies, mosquitoes, gnats, and other small arthropods.

The spider constructs an intricate and symmetrical orb-shaped web to capture its prey.

When an insect gets trapped in the web, the spider quickly immobilizes it with its silk threads and then proceeds to consume it.

The web’s design and positioning help the spider maximize its chances of catching prey that flies or crawls into its vicinity.

Further Reading and Resources

Books and Publications

For those interested in learning more about spiders, including the Arrowshaped Micrathena, we recommend the following books:

  • How to Know the Spiders by B. J. Kaston: A classic guidebook by a leading expert in the field, providing detailed information about various spider species.
  • Land Invertebrates by WCB/McGraw-Hill: This comprehensive textbook covers a wide range of invertebrates, such as earthworms, slugs, snails, arthropods, crayfish, shrimp, millipedes, centipedes, and mites.

These publications will provide a solid understanding of spider biology, behavior, and classification.

Research Studies

In addition to books, several research studies focusing on the Arrowshaped Micrathena and other Spiny Orbweavers have been published:

  • Levi’s study on land invertebrates: This research focuses on the various animal species of invertebrates, including the Arrowshaped Micrathena. It offers insights into their unique characteristics and behavior.

  • Studies on sticky strands and stabilimentum: These studies look at the intricate web building techniques of Spiny Orbweavers, such as the Arrowshaped Micrathena, and how their sticky strands and stabilimentum are effective in capturing prey.

Web CharacteristicsArrowshaped MicrathenaOther Spiny Orbweavers
Sticky StrandsYesYes
Sharp SpinesYesSome
StabilimentumPresentVaries

These research studies provide valuable knowledge about the unique features of Arrowshaped Micrathena spiders, giving spider enthusiasts a deeper understanding of this fascinating species.

Conclusion

In conclusion, the Arrow Shaped Micrathena Spider, with its captivating arrowhead-shaped abdomen and intricate circular webs, stands as a remarkable species within the world of arachnids.

Native to various regions of North America, this orb-weaving spider showcases distinctive colors and tubercles that contribute to its unique appearance.

While not considered dangerous to humans, its venom aids in subduing its prey, primarily small insects that become ensnared in its finely woven web.

As it rests at the center of its meticulously crafted trap, the Arrow Shaped Micrathena continues to weave its intriguing story in the vast tapestry of the natural world.

Footnotes

  1. Search Result – White and Black Micrathena  2
  2. Search Result – Spined Micrathena  2
  3. Search Result – White Micrathena 

Reader Emails

Over the years, our website, whatsthatbug.com has received hundreds of letters and some interesting images asking us about these insects. Scroll down to have a look at some of them.

Letter 1 – Arrow-Head Spider, Verrucosa arenata

white triangle on back?
Hello,
Your site is the most comprehensive collection Ive seen so far. I live in North Carolina. Something has been biting me (but not my wife?) at night. The bites are not painful but can be really itchty at times. I found this spider crawling in our sheets this evening.

Given its very distinctive white triangle on the back and striped legs I thought the ID would be cake. After looking at many sites, including yours, I have yet to find a match.

We have seen many different kinds of spiders in and around our house so this one may be unrelated to the bites. Still Id just like to know what we’ve got here.
Thanks
Paul

Hi Paul,
We love getting good photos of new species for our site. My old Comstock Spider Book calls your spider Verrucosa arenata and you have a female. Some authors call the genus Aranea.

The abdomen is distinctive and triangular in outline. The large triangular spot can be white, yellow, pink or green. It is a Southern species that is occasionally found as far north as Long Island. It is probably not the cause of your wife’s bites. A Google search turned up a site that had this information:

“The arrow-head spider, Verrucosa arenata, has three distinct color forms, which occur in the same habitat. Our goal is to understand the ecological and behavioral factors that allow for the maintenance of this polymorphism.

More specifically, we are interested in understanding how predation (e.g., crypsis) and assortative mating maintains these color forms.”

Letter 2 – Arrow-Shaped Micrathena

Unusual spider
Here is an unusual spider that we found on our bushes in front of our house in Nashville, Tennessee. I tried to search for it to identify it online but to no avail and I came upon your site. Can you identify it? Thanks!
Rhonda

Hi Rhonda,
This is an Arrow-Shaped Micrathena, Micrathena sagittata, one of the orb weaving spiders.

Letter 3 – Arrow-Shaped Micrathena

We found this in our backyard in Winchester VA
If you find out what this is, could you please let us know. I’m most interested to learn if it is poisonious or not.
Thanks much!
Alicia

Hi Alicia,
This is an Arrow-Shaped Micrathena female, Micrathena sagittata. It is found at woodland edges, shrubby meadows and gardens in the East, ranging as far west as Texas. They are harmless orb weavers. Do you know the famous pediatrician Winston Lutz of Winchester?

Letter 4 – Arrow Shaped Micrathena

Micrathena sagittata?
Hi!
Just came across your site, and it’s fantastic! Can you confirm whether this little darling is a Micrathena sagittata? Most of the sagittata photos I have seen show this species with much more yellow than black. This photo was taken at Cumberland Island, GA, in August.
Thanks,
Karen

Hi there Karen,
You certainly do have the Arrow Shaped Micrathena here. This is a shot of the underside, hence the markings look different. Additionally, there is often much variation from specimen to specimen.

Letter 5 – Arrow Shaped Micrathena

think it’s a spider
Hello,
I was walking past my apple tree this evening and saw what I thought was a spider crawling up a web from the ground. But when I got closer I wasn’t so sure. It does have eight legs but the yellow body is hard like a crustacean. What is it? Is it poisonous?
Thanks. Janet
THE LOY’S

Hi Janet,
This is an Arrow Shaped Micrathena, one of the smaller orb weavers. Your specimen is a female. All spiders have venom, but most, like this gal, are not harmful to people.

Letter 6 – Arrow-Shaped Micrathena

WHAT IS THIS SPIDER??
I saw it last summer on my lilac bush after the blooms has past. I live in Medway MA.
Carin Cohen

Hi Carin,
Your diminutive spider is an Arrow-Shaped Micrathena.

Letter 7 – Arrow-Shaped Micrathena

Subject: Help! Is this dangerous?
Location: Williamsburg
January 7, 2014 7:57 pm
We live in the very far south of Kentucky in a place called Williamsburg. We found this crawling in our car this fall.

Since we live surrounded by woods we thought we had seen almost every bug out there, but this is a new one…and no one has been able to identify it for us yet!
Signature: Whitney and Paul Johnson

Arrow-Shaped Micrathena
Arrow-Shaped Micrathena

Hi Whitney and Paul,
You encountered a Spider known as an Arrow-Shaped Micrathena,
Micrathena sagittata, and according to BugGuide:  “This spider does not pose a danger to humans (and neither do any others in this family).” 

Its family is Araneidae, the Orbweavers, and the members of this family build a classic circular web that they rarely leave.  It is believed that the spiny body of this spider makes it difficult to swallow by small predators including birds.

Letter 8 – Arrow-Shaped Micrathena

Subject:  interesting spider with body spikes in NH!
Geographic location of the bug:  Francestown, NH
Date: 08/15/2019
Time: 11:35 AM EDT
Your letter to the bugman:  Saw this spider on a dead oak leaf today, very interesting body with spikes!
Googled around a bit and could not find it.
Would love to know what it is.
How you want your letter signed:  Alfred Eisenberg

Arrow-Shaped Micrathena

Dear Alfred,
This intriguing spider is an Arrow-Shaped Micrathena,
Micrathena sagittata, and according to BugGuide:  “This spider does not pose a danger to humans (and neither do any others in this family).”

Arrow-Shaped Micrathena

Thanks for that!  I did actually find that eventually but nice to have it confirmed.   Beautiful spider I have not seen before.

Letter 9 – Arrowhead Spider

Verrucosa arenata
Hey there bug people!
I ran across this spider on my deck this morning here in Frederick County, Maryland. From my google searches I can confidently say it’s a Verrucosa arenata of the yellow variety.

I saw you have a white one on your site and I thought maybe she could use a friend. Cheers,
James Pryor

Hi James,
Thanks for sending us your lovely photo of an Arrowhead Spider. We believe, once upon a time, we also received an image of a pink Verrucosa arenata.

Letter 10 – Arrowhead Spider

Neat Looking Red and White Bug
March 22, 2010
I found this bug on the side of my car a few years ago around September. It was about the size of a dime, maybe a little bigger but not by much. I live in a rural area in eastern Virginia and have seen many bugs but never one like this.

No one else I talked to could identify it either. I was so excited when I discovered your website and am hoping that you’ll be able to solve this mystery. Thanks for your help!
Grace
eastern Virginia

Arrowhead Spider

Hi Grace,
We haven’t posted a photo of an Arrowhead Spider, Verrucosa arenata, in years.  You may see additional images on BugGuide.  The Arrowhead Spider is one of the Orbweavers, and it is not dangerous.

Letter 11 – Arrowhead Spider

Subject: Spider with yellow triangle
Location: Woods/ around house, Junior, West Virginia
August 3, 2016 6:11 pm
This was hanging form my AC outside my window. As long as it won’t kill me it can stay. Let me please
Signature: Jennifer

Arrowhead Spider
Arrowhead Spider

Dear Jennifer,
The Arrowhead Spider,
Verrucosa arenata, is a harmless species.  You may verify that on BugGuide where it states:  “Like other orb weavers, it is not dangerous to humans.”  Can you please provide a state or city for the location?

Letter 12 – Arrowshaped Micrathena

Lime-green ‘V’ spider…
Tue, Oct 14, 2008 at 12:10 AM
At the end of a camping trip in Rock Island, TN, we were taking down our tents when I found this little critter.

Originally, he was on the tent, but I moved him onto a nearby tree with a leaf so he wouldn’t get squished amongst our packing. I’ve never seen this species before and I was just curious as to what type of spider he/she is.

I also wanted to mention I love your site. Through it, I’ve figured out what baby wheel bugs, house centipedes, and female dobsonflies are!
Much thanks,
Sarah Bowers
between middle and east TN

Arrowshaped Micrathena
Arrowshaped Micrathena

Hi Sarah,
This little beauty is a female Arrowshaped Micrathena, Micrathena sagittata.  It is a harmless orbweaver that is found in wooded areas.

Letter 13 – Arrowshaped Micrathena

Spider with reddish brown legs and yellow & black pointy back
September 8, 2009
I was sitting on my backyard swing and my 18 mos old brought my attention to this spider, she thought it was a bee. I put it in a bug jar and took a couple pictures of it. It is between 1/4-1/4 inches long.

We live in SW Pennsylvania And it’s nearly fall here. I’m just wondering what kind of spider it is, I’ve never seen anything like it around here before !

I am petrified of spiders, so I can’t believe I actually got this in a jar.. haha Any information you have would be very much appreciated. Thank you.
Momma of Three
South Western PA

Arrowshaped Micrathena
Arrowshaped Micrathena

Dear Momma of Three,
Suddenly we have gotten quite behind in our responses.  The new semester with budget cuts has brought added responsibility to our already busy lives.  This is an Arrowshaped Micrathena, Micrathena sagittata, a harmless Orbweaver.  You can read about the species on BugGuide.

Letter 14 – Arrowshaped Micrathena

Is it a Spider or a Beetle?
October 13, 2009
About 2cm long, less than 1cm at the widest part
KC
Salem Ohio

Arrowshaped Micrathena
Arrowshaped Micrathena

Hi KC,
This is a spider known as the Arrowshaped Micrathena, Micrathena sagittata.

Letter 15 – Arrowshaped Micrathena

resubmitting pictures
Location: Scotrun, PA USA
January 23, 2012 10:26 am
found this bug on the outside of our door on 9/24/11. Temp was around 77 and sunny. the yellow body was about 1/2” overall.
Signature: Jean

Arrowshaped Micrathena

Hi Jean,
This pretty little spider is a harmless Arrowshaped Micrathena,
Micrathena sagittata.  According to BugGuide, it spins its small webs in open woods.

thank you ever so much for identifying this spider, it really is very pretty.

Letter 16 – Arrowshaped Micrathena and Goldenrod

Subject: Arrow spider and goldenrod
Location: Troy, VA
September 18, 2016 12:22 pm
Hi Daniel,
I’m trying hard not to inudate you with photos, but I thought you might like this image of an arrow spider by some goldenrod. While the spider is not using the goldenrod as direct source of food, it is nicely camouflaged by the goldenrod and seems to be using it as a way to hunt insects that do feed on the goldenrod. The yellow of the spider and the yellow of the goldenrod are remarkably similar. Also, it’s such a cool little spider.
Signature: Grace Pedalino

Arrowhead Micrathena
Arrowshaped Micrathena

Dear Grace,
One couldn’t help but to disagree more with your belief that this Arrowshaped Micrathena “is not using the goldenrod as a direct source of food” because though it is not eating the goldenrod, it is eating the insects that are attracted to the goldenrod. 

While Arrowhead Micrathenas would survive without the goldenrod, we believe that they and other orbweavers as well as carnivorous insects including preying mantids thrive in a goldenrod meadow. 

This is a marvelous addition to our Goldenrod Meadow tag and we agree heartily that the coloration of the Arrowshaped Micrathena is perfect with the goldenrod.  Here is a nice BugGuide image of an Arrowhead Micrathena. 

We forgot that we had a 10 Most Beautiful Spiders tag, and we are adding your Arrowhead Micrathena to that tag.

Arrowhead Micrathena
Arrowshaped Micrathena
Arrowhead Micrathena
Arrowshaped Micrathena

Authors

    by
  • Bugman

    Bugman aka Daniel Marlos has been identifying bugs since 1999. whatsthatbug.com is his passion project and it has helped millions of readers identify the bug that has been bugging them for over two decades. You can reach out to him through our Contact Page.

  • Piyushi Dhir

    Piyushi is a nature lover, blogger and traveler at heart. She lives in beautiful Canada with her family. Piyushi is an animal lover and loves to write about all creatures.

28 thoughts on “Arrow Shaped Micrathena Spider: Your Quick Guide to Discovery”

  1. I have what I think is an Orb Weaver but, not sure which kind it is, how do I email a photograph so you can help me identify my spider or a link I may use.

    Reply
  2. I was bitten by this same shape spider but it was black with a white top. Hurt like heck! a day later my leg muscles are so sore like I ran 5 miles. Is this bad?

    Reply
  3. In Carrboro, NC….This spider actually jumped BACK on me from the pavement after I brushed it out of my hair as if attacking. Aggressive. Not sure if this is normal behavior or not.

    Reply
  4. I have seen that this spider is in the southern half of the states but I have a whole bunch at my house in Rhode Island

    Reply
  5. I killed a spider with a white triangle on its butt. When I smashed it, I looked to see if it died. Well when I opened up the toilet paper I seen it was dead but in its butt there was a little thin gray coil of a worm. An it was hard to kill, I had to masked it like 4-5 times before it finally died. Do you know what that worm like thing would have been? I’m freaked out. Thanks.

    Reply
  6. We live in the country above Durham, NC. I went out last night to close up our chicken coops and feed the rabbit when I almost walked into a giant web! I shined my light up to see this spider with a white triangle on its back waiting on the edge of a tree branch. Then not even two feet away was another one with a yellow to green triangle working on its own web. Strangely though there was no sight of them today. One instinct is to agree with my wife and burn down every tree and bush in our yard that doesn’t produce fruit. Evey night like the last brings me one step closer to doing just that. Even though I’m the one trying to convince her some spiders are good for the yard and environment; that sudden awareness you just got web all over your face and head and don’t know where the spider went or what kind it was, is extremely frightening for the most courageous. Needless to say, I am the only one with the faith and stupid willingness to cautiously brave the risk of a face full of web around here. Thank you for identifying my nocturnal nemesis stalker in waiting.

    Reply
    • Spiders get into the house, too. You’ve probably even run into a web there at some point. So, you might need to also burn the house down….. 🙂

      Reply
    • I’m in the Union Ridge area of northern Alamance County. I almost ran into one of those creepy little spiders while cleaning up after my dog late in the evening. The one I saw was red with the white triangle.
      Late August through Sept and Oct is the worst time for tree web spiders. The really big ones that come out in the fall really creep me out.
      I have been out after dark with the dogs and my flashlight, shining the light around the edge of our treeline checking for critters so the dogs don’t go running. I have caught little bright glowing object in the trees or tall grass. With curosity kicking in I had to go check it out only to find out it was the eye of a big creepy spider watching me from its perch on the tree branch.

      Reply
    • I’m in the Union Ridge area of northern Alamance County. I almost ran into one of those creepy little spiders while cleaning up after my dog late in the evening. The one I saw was red with the white triangle.
      Late August through Sept and Oct is the worst time for tree web spiders. The really big ones that come out in the fall really creep me out.
      I have been out after dark with the dogs and my flashlight, shining the light around the edge of our treeline checking for critters so the dogs don’t go running. I have caught little bright glowing object in the trees or tall grass. With curosity kicking in I had to go check it out only to find out it was the eye of a big creepy spider watching me from its perch on the tree branch.

      Reply
  7. Right now is prime spider-hunting season, with webs becoming more obvious as the spiders reach maturity, and leaves start to fall during autumn. Enjoy looking for them. Google Book Search provides previews of several pages of text and plates so that you can judge for yourself the quality of the book.

    Reply
  8. I found this spider on my deck when I was covering the grill this morning. I saw it on my shoulder. I felt a string of web so I pulled it away hoping the spider was still attached and it was. It was not aggressive but it could be dying or sick because it didn’t seem very active or interested in a quick get away. It landed on the deck floor. I bent down to see what kind it was and I had never seen this spider before. It had a shiny white triangle back. I took a picture and it looks just like the one above. It’s their world too so just researching to better understand this little guy- is it safe or something I should avoid coming in contact with.
    I’m located in Alabama. I didn’t mention that in my previous post.

    Reply
  9. Just found an arrowhead spider this morning (Sept. 15, 2017) in Gnadenhutten, Ohio. He began with one strand between a tree and a hanging basket stand which are about 11 feet apart on either side of a sidewalk. The web was built off that, and it was probably 5′ in diameter with the little spider in the center. It was quite a foggy morning, and the dew on the web helped us see it before we walked into it. We broke out the cameras immediately & got a few good shots. Good thing, too. My husband told me that the little guy had dismantled the web by about 1 PM. I posted pics on instagram #brickhouseonmain

    Reply
  10. I found this same little guy in my yard this morning with him just hanging out in the middle of his huge web stretched across the grass and trees. The web was about 6′ diameter and the spider was a light brown with a large white triangle on it’s back. I live in the Washington, D.C. suburbs and the past couple weeks have been running into spiders I’d never seen before. Just the other day I ran into a gray spider with a white cross on its back on my deck also. He has a web on my deck and I have been throwing moths in his web the past few nights watching him feed on those. Its fun to watch that little cross spider run to those moths and wrap them up in a cocoon and carry them to the rest of the cocoons at the top of his web. I don’t think he will ever go away if I keep feeding him every night. I think I will name him cross contamination… C.C. for short! Lol!

    Reply
  11. I saw this little beauty in Bristol, TN, last night. 47 years of spider fascination and I’ve never come across one in NC, VA, or TN. “Mine” was solid black, though, which made the perfectly equidistant, white triangle appear even more stark. Quite striking design, evolution! Thanks for helping identify!

    Reply
    • Yes the one on my shoulder was black too, (while just sitting on the bed!) making the white brighter. Gaffney, SC
      Haven’t seen anyone say they’ve seen one in SC! Im going to keep researchin to make sure they are ok and not poisonous lol.

      Reply
    • Yes the one on my shoulder was black too, (while just sitting on the bed!) making the white brighter. Gaffney, SC
      Haven’t seen anyone say they’ve seen one in SC! Im going to keep researchin to make sure they are ok and not poisonous lol.

      Reply
  12. I found one on my kitchen floor. I took a picture then killed it because I thought it might be poisonous and I have kids. We are in central TN. It was black with a white triangle on it’s back.

    Reply
    • Hopefully, learning that they are harmless (actually beneficial) creatures will help to preserve the life of the next one you encounter.

      Reply
  13. We saw one beauty: full black with white triangle in the Land Between the Lakes (Kentucky/Tennessee). Almost to walked right through its web… but luckely saw it just in time so my husband could put it safely to the side. Happy to read it was not poisonous.

    Reply
  14. Hello, was googling this Arrowhead spider, and found this site. I face planted into the web and it was in my hair, I was in the woods, so I got it out, and took pictures of this neat lil guy. And put him back on a tree. Would post a pic bit d ont know where. I live in South central Arkansas

    Reply
  15. Found one in Northwest Louisiana, in my house. I just left it alone, and here it remains. Hopefully, it will catch and murder these deadly mosquitos that plague us here.

    Reply

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