marbled orbweaver

(Araneus marmoreus)

               
Conservation Status

IUCN Red List

not yet assessed

marbled orbweaver

NatureServe

NNR - Unranked

Minnesota

not listed

Occurrence

Common

Season

Spring to the first hard freeze in fall

Habitat/Host

Shrubs, tree branches, or tall grass; woodland edges, stream banks, gardens, fences, bridges, and other human-made constructions

Size

Female Body Length: to 11 16

 

Male Body Length: ¼ to

Legspan: 11 16 to 17 16

Photo by Christa Rittberg
 
Identification

This is a medium-sized orb weaver spider. Females are much larger than males, to 11 16 long and 1 16 to ¼ wide, with a legspan up to 17 16. Males are about half as big, ¼ to long and 1 16 to wide.

Like all spiders, it has two body parts. The hardened plate (carapace) covering the front part (cephalothorax) is light brown or orange with a narrow dark stripe down the middle and on each side.

The abdomen is and rounded and smooth, with no bumps toward the rear. On the female it is large and rounded. On the male it is proportionately smaller and more elongated. The color and pattern of the abdomen is highly variable both regionally and seasonally. It has a white, yellow, orange, brownish, or pink background color. There are always highly contrasted black, gray, and white markings, at least at the front edge, that give it a marbled appearance. These markings may fade as the season progresses.

The legs are 11 16 to 17 16 long and spiny. Males have proportionally longer legs than females. The ends of the legs are banded with black and either clear or white. The third (femur) and fourth (patella) leg segments are often light brown or orange, the same color as the carapace. Sometimes these segments are banded.

The face is small. There are eight eyes, all of them small, in two rows.

 
Similar
Species

 

 
Food

Flying insects

 
Life Cycle

Several hundred orange eggs are deposited in a mass and then wrapped in silk producing a flattened spherical egg sac. The egg sac is then attached to nearby vegetation or to the spider’s retreat. Some eggs hatch in late summer or fall, others overwinter in egg sacs. Spiderlings disperse by “ballooning”. They climb a branch, blade of grass, or fencepost, and release a long thread of silk. The silk thread catches the wind or even a light breeze and the spiderling floats to a new site.

Adults are active from mid-summer to the first hard freeze in fall.

 
Behavior

They spin a large circular web that hangs vertically. This web is called an “orb”, which gives this family of spiders its common name. The orb is typically a closed hub, 20 to 30 in diameter, with 15 to 35 spokes (radii) that are not sticky. The radii extend to the center of the hub. They are connected to each other by sticky threads that spiral outward from the center. The spider also makes a retreat out of silk near one edge of the orb. The retreat is connected by a signal thread to the center of the web, allowing the spider to feel vibrations of prey. The web is usually consumed and a new web constructed each evening.

They will drop to the ground and hide if approached.

Males are unable to capture prey larger than themselves.

 
Distribution Distribution Map   Sources: 7, 24, 29, 30, 82.
 
Comments

 

 
Taxonomy

Order:

Araneae (spiders)

 

Suborder:

Araneomorphae

 

No Rank:

Entelegynae (eight-eyed spiders)

 

No Rank:

Orbicularia

 

Superfamily:

Araneoidea

 

Family:

Araneidae (orb weavers)

 
Subordinate Taxa

marbled orbweaver (Araneus marmoreus marmoreus)

marbled orbweaver (Araneus marmoreus trapezius [=Araneus marmoreus pyramidatus?])

 
Synonyms

Araneus raji

Araneus raji betulae

Araneus tusigia

 
Common
Names

marbled orb weaver

marbled orbweaver

marbled orb-weaver

 

 

 

 

 

 

Glossary

Carapace

The hard, upper (dorsal), shell-like covering (exoskeleton) of the body or at least the thorax of many arthropods and of turtles and tortoises.

 

Cephalothorax

The front part of a spider’s body, composed of the head region and the thoracic area fused together. Eyes, legs, and antennae are attached to this part.

 

Femur

On insects and arachnids, the third, largest, most robust segment of the leg, coming immediately before the tibia. On humans, the thigh bone.

 

 

       
Visitor Photos
   
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Jim S.
       

Right next to the doorbell on the front door.

  marbled orbweaver    
       
Dawn
       

spotted doing fall yard work

  marbled orbweaver    
       
Martha Grussing
       

This spider was inside a second floor bedroom of our house in Hastings in Dakota County. It may have passed through an unused window air conditioning unit. We live in town (not in the country) a few blocks from the historic preservation district (maybe that’s where this beauty was headed).

  marbled orbweaver    
       
Alfredo Colon
       
  marbled orbweaver    
       
Cheri
       

She found a corner in my little greenhouse on the deck.

  marbled orbweaver    
       
Larry Waddell
       

A female was found dining on its catch in a flower garden in our backyard.

  marbled orbweaver    
       
Holly B.
       
  marbled orbweaver    
       
Aaron Hebeisen
       

Female found building vertical web in closet doorway. 1/2” long, quarter-sized spread out.

  marbled orbweaver    
       
Craig & Cheryl Olson
       

Spotted yesterday in Houston County MN close to Hokah.

  marbled orbweaver    
       
Christa Rittberg
       
  marbled orbweaver   marbled orbweaver
       
  marbled orbweaver    
       
MinnesotaSeasons.com Photos
   
       
       

 

Camera

     
Slideshows
   
  Marbled Orbweaver (Araneus marmoreus)
Bill Keim
 
   

 

slideshow

       
Visitor Videos
   
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Other Videos
 
  Marbled Orb Weaver (Araneus Marmoreus) Handling
IloveSPIDERZ
 
   
 
About

Published on Jan 2, 2015

Here is a video of me handling a Marbled Orb-weaving spider. This was filmed in North Carolina. I know this species also exists in Upstate New York. Thanks for watching!

   
       
  Marbled Orb Weaver Spider
Carl Rasmussen
 
   
 
About

Published on Oct 11, 2013

We saw several of these Spider weaving there webs in Uhwarrie National Forest in North Carolina.

Taken with a Fugi film XP Waterproof camera

   
       
  Marbled Orb Weaver Spider - Araneus marmoreus
socialgarbage2
 
   
 
About

Published on Oct 5, 2011

Found this little lady perched up on my downspout, happily working away on a beetle of some kind. While filming her, I got lucky and got a shot of another beetle flying into her web and her going after it!

for more info on the Marbled Orb Weaver Spider : http://www.cirrusimage.com/Arachnid_marbled_orbweaver.htm

music : Kevin MacLeod (incompetech.com) Licensed under Creative Commons "Attribution 3.0"
http://incompetech.com/music/

   
       
  Araneus Marmoreus Var. Pyramidatus found in my garden!
PaoloDS01
 
   
 
About

Published on Oct 22, 2014

A beautiful spider that I found in my garden: it's an araneus marmoreus var. pyramidatus. It's big!

   
       
  Marbled orb-weaver - Araneus marmoreus
ookkonaaoulusta
 
   
 
About

Published on Sep 8, 2015

A female Marbled orb-weaver hanging and climbing.

Camera: Panasonic Lumix DMC-GF2
Lens: Canon Macro Lens FD 50mm 1:3.5.

   
       

 

Camcorder

         
Visitor Sightings
   
Report a sighting of this arachnid.
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Simply email us at info@MinnesotaSeasons.com.
Be sure to include a location.

Jim S.
September 2018

Location: Mankato, MN

Right next to the doorbell on the front door.

marbled orbweaver


Bj
9/17/2019

Location: Alexandria, MN

Beautiful


Dawn
9/4/2019

Location: Clear Lake, MN

spotted doing fall yard work

marbled orbweaver


Alfredo Colon
8/30/2019

Location: Hastings in Dakota County

This spider was inside a second floor bedroom of our house in Hastings in Dakota County. It may have passed through an unused window air conditioning unit. We live in town (not in the country) a few blocks from the historic preservation district (maybe that’s where this beauty was headed).

marbled orbweaver


Alfredo Colon
8/6/2019

Location: Woodbury, MN

marbled orbweaver


Shannon Strong
8/4/2019

Location: Wyoming MN

Found under a green bean lead in my garden


Jane P
11/8/2018

Location: Eden Prairie, MN

She was all curled up in a ball in our landscaping rocks. I thought is was a fancy acorn. I brought it in the house and the legs came out!! Wow!


Xjacy
10/26/2018

Location: Faribault, MN, Rice county

She was strolling slowly along our outside doormat. So beautiful! I've lived in the country a long time and I've never seen one prior to today. I've learned a lot about them on this website - thank you!


Jennan Kellogg
9/17/2018

Location: Crosby Farm Regional Park, St. Paul, MN

The Marbled Orb-weaver made a large web in the fork of a tree trunk near the Wetland Trail of the Crosby Farm Regional Park. It's web showed signs of damage with evidence that the spider--a female, if I'm not mistaken--had repaired it. 


Larry Waddell
9/16/2018

Location: Oak Grove, MN

A female was found dining on its catch in a flower garden in our backyard.

marbled orbweaver


Holly B.
9/13/2018

Location: Elk River, MN

marbled orbweaver


Aaron Hebeisen
9/12/2018

Location: Lake City, MN

Female found building vertical web in closet doorway. 1/2” long, quarter-sized spread out.

marbled orbweaver


Hayden
9/9/2018

Location: Oak Grove, MN - Anoka County

It was spinning a web on the side of our motor-home.


Sawyer Olson
9/7/2018

Location: Scott County

Found 7 feet up in a maple tree near its web. It had made a home inside a curved leaf.


Erich and
Jacque Saul

8/26/2018

Location: our doorframe! Montgomery,MN... Le Seuer co.

Beautifully bright spider!  The first time I have ever seen one, striking! 


Craig & Cheryl Olson
10/22/2017

Location: Houston County, MN

Spotted yesterday in Houston County MN close to Hokah.

marbled orbweaver


     
     
 
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