barn spider

(Araneus cavaticus)

               
Conservation Status

IUCN Red List

not yet assessed

barn spider

NatureServe

NNR - Unranked

Minnesota

not listed

Occurrence

Common and widespread

Season

Late summer through autumn

Habitat

Shady areas; mostly in human structures; barns, caves, mine openings; also cliff overhangs

Size

Male: to ¾

Female: ½ to

Photo by Melissa Kneebone
 
Identification

The female has raised humps “shoulders” near the front of the upper (dorsal) side of the abdomen. There is a large black spot on the underside of the abdomen. It is bordered on each side by a white, unbroken, comma-shaped spot.

 
Similar
Species

Hentz’s orbweaver (Neoscona crucifera) upperside of the abdomen lacks conspicuous markings. The black spot on the underside of the abdomen is bordered on each side by a “broken L”.

 
Food

Insects

 
Life Cycle

 

 
Behavior

The female barn spider builds a new web every evening. She sits motionless, head down, in the center of the web, waiting for prey to be snared. In the morning she recycles the web by eating it. She usually curls up a leaf creating a shelter in which she spends the daylight hours. The shelter is above the web and is connected to it by a strand of webbing. When the strand vibrates, she knows she has snared a prey.

 
Distribution Distribution Map   Sources: 24, 29.
 
Comments

 

 
Taxonomy

Order:

Araneae (spiders)

 

Suborder:

Araneomorphae

 

No Rank:

Entelegynae (eight-eyed spiders)

 

No Rank:

Orbicularia

 

Superfamily:

Araneoidea

 

Family:

Araneidae (orb weavers)

 
Synonyms

 

 
Common
Names

barn orbweaver

barn spider

 

 

 

 

 

 

 

 

       
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Melissa Kneebone
       
  barn spider   barn spider
       
MinnesotaSeasons.com Photos
   
       
       

 

Camera

     
Slideshows
   
  Barn Spider (Araneus cavaticus)
Andree Reno Sanborn
 
  Barn Spider (Araneus cavaticus)  

 

slideshow

       
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Other Videos
 
  Barn Spider Eating a moth
dragonstar5
 
   
 
About

Uploaded on Sep 23, 2007

Barn Spider (Orb Weaver, Family Araneidae, Araneus cavaticus) Catching a moth in its web and wrapping it up.

   
       
  Female Barn Spider spinning web
Lee Dar
 
   
 
About

Published on Aug 9, 2012

A female Barn Orb-Weaving Spider (Araneus Cavaticus) spins a web at Dana's padio. 1 of 2 videos

   
       
  Barn Spider (A. cavaticus)
TinCanValley
 
   
 
About

Published on May 19, 2012

   
       

 

Camcorder

         
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Melissa Kneebone
9/24/2015

Location: Elk River, MN

barn spider


     
     
 
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