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Nursery Web Spider (Pisaurina mira)


Detailing the identifying qualities of the Nursery Web Spider, including physical features and territorial reach.


 Updated: 8/23/2017; Authored By Staff Writer; Content ¬©www.InsectIdentification.org







  Nursery Web Spider  
Picture of Nursery-Web-Spider


The female Nursery Web Spider is a dedicated parental caretaker, usually seen with its egg sac until the spiderlings hatch.





The Nursery Web Spider derives its name from the good care it takes of its egg sacs. Females carry the sac with their fangs and build a web for it in high weeds or low shrubs, suspending it inside of a leaf. The female then guards the leafy nursery and her eggs until they hatch.

This spider does not spin a web to catch prey. It is an ambush predator and uses its silk for other purposes. Males look slightly different than females. Both genders eat insects and other invertebrates that they are able to catch and subdue.








Picture of the Nursery Web Spider
Picture of the Nursery Web Spider


Nursery Web Spider Information



Category: Spider
Common Name: Nursery Web Spider
Scientific Name: Pisaurina mira


Taxonomy Hierarchy



 Arrow graphic Kingdom: Animalia
  Arrow graphic Phylum: Arthropoda
   Arrow graphic Class: Arachnida
    Arrow graphic Order: Araneae
     Arrow graphic Family: Pisauridae
      Arrow graphic Genus: Pisaurina
       Arrow graphic Species: mira

Size, Identifying Tags and Territorial Reach



Size (Adult, Length): Size (Adult, Length): 7 mm to 26 mm (0.273 inches to 1.014 inches)
Identifying Colors: brown, gray, white, black
Additional Descriptors: biting, venomous, hairy, spiky

North American Territorial Reach (Though Not Limited To): Alabama; Alaska; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Hawaii; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming; Alberta; British Columbia; Manitoba; New Brunswick; Newfoundland and Labrador; Nova Scotia; Ontario; Prince Edward Island; Quebec; Saskatchewan; Mexico

A Note About Territorial Reach: Keep in mind that an insect's reach is not limited by lines drawn on a map and therefore species may appear in areas, regions and/or states beyond those listed above. Insects are driven by environmental factors, food supplies and mating patterns and do not nescessarily work within hard-and-fast territorial lines like we humans do.

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