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Feather-Legged Spider (Uloborus glomosus)


Detailing the physical features, habits, territorial reach and other identifying qualities of the Feather-Legged Spider.


 Updated: 8/28/2018; Authored By Staff Writer; Content ¬©www.InsectIdentification.org



  Feather-Legged Spider  
Picture of Feather-Legged-Spider
Picture of Feather-Legged-Spider Picture of Feather-Legged-SpiderPicture of Feather-Legged-SpiderPicture of Feather-Legged-Spider


Not one to shave, the Feather-Legged Spider uses its extra-long tufts of leg hair to comb its silk web.





Thick legs are made to look all the bigger thanks to long, feathery hairs. Feather-Legged Spiders have a large abdomen with two prominent bumps on the upper half. These brown patterned spiders may look ferocious, but they actually lack venom glands and are, therefore, non-venomous, a true rarity in the spider world. (Almost every spider produces venom, but not every venom is poisonous to humans.)

The Feather-Legged Spider is a type of orb-weaver, creating fine webs that entangle prey. The webs are built flat and not far from the ground. A stabilimentum (zig-zag) may be visible in the web. They seem to prefer to hang head-down when collecting and feeding on prey. The silk of their web is not sticky, so its ensnaring ability comes from the way the web is built. Inside of a large, holey spiral of silk, the Feather-Legged Spider creates a willowy web with many smaller gaps. The tiny size of the gaps between lines in the web make it difficult for an insect to pull itself free once a leg or antenna falls through one. Movement tends to make the tangle worse by twisting more of the small gaps around the insect. Once the insect is stuck, the spider descends on its prey, crushing it using more lines of silk.
Basic Information
Common Name: Feather-Legged Spider
Scientific Name: Uloborus glomosus
Category: Spider


General Identification
Size (Adult; Length): 3mm to 10mm (0.12in to 0.39in)
Colorwheel Graphic
Identifying Colors: brown; ivory; red, black
Additional Descriptors: feathery, bumpy, speckled, tufts




Taxonomic Hierarchy
Kingdom: Animalia
Phylum: Arthropoda
Class: Arachnida
Order: Araneae
Family: Uloboridae
Genus: Uloborus
Species: glomosus


Spider Anatomy (Typical)
Graphic showing basic parts of spider anatomy
1
Legs: Spiders have four pairs of legs and these are attached to the cephalothorax.
2
Pedipalps: Small appendages near the mouth used as taste and smell organs.
3
Cephalothorax: Contains eyes, head, mouthparts, and legs.
4
Abdomen: Contains various organs related to digestion, reproduction, and web-making.
5
Spinnerets: Used in the production of spider silk for fashioning webs or catching prey.
NOTE: Unlike insects, spiders have both an endoskeleton (internal) and exoskeleton (external).


Territorial Reach (A-to-Z)
Note: 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 below as they are driven by environmental factors (such as climate change), available food supplies and mating patterns. Grayed-out selections below indicate that the subject in question has not been reported in that particular territory. U.S. states and Canadian provinces / territories are clickable to their respective bug listings.
Alabama
Alaska
Arizona
Arkansas
California
Colorado
Connecticut
Delware
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
Canadian National Flag Graphic
Alberta
British Columbia
Manitoba
New Brunswick
Newfoundland and Labrador
Nova Scotia
Ontario
Prince Edward Island
Quebec
Saskatchewan
Mexican National Flag Graphic
Mexico


Territorial Area Map (Visual Reference Guide)
The map below showcases (in red) the states and territories of North America where the Feather-Legged Spider may be found (but is not limited to). This sort of data can be useful in seeing concentrations of a particular species over the continent as well as revealing possible migratory patterns over a species' given lifespan. Some species are naturally confined by environment, weather, mating habits, food resources and the like while others see widespread expansion across most, or all, of North America.
Alaska  
Hawaii  
Prince Edward Is.  
State of Alabama graphic
State of Arizona graphic
State of Arkansas graphic
State of California graphic
State of Colorado graphic
State of Delware graphic
State of Florida graphic
State of Georgia graphic
State of Idaho graphic
State of Illinois graphic
State of Indiana graphic
State of Iowa graphic
State of Kansas graphic
State of Kentucky graphic
State of Louisiana graphic
State of Maine graphic
State of Maryland graphic
State of Michigan graphic
State of Minnesota graphic
State of Mississippi graphic
State of Missouri graphic
State of Montana graphic
State of Nebraska graphic
State of Nevada graphic
State of New England graphic
State of New Jersey graphic
State of New Mexico graphic
State of New York graphic
State of North Carolina graphic
State of North Dakota graphic
State of Ohio graphic
State of Oklahoma graphic
State of Oregon graphic
State of Pennsylvania graphic
State of South Carolina graphic
State of South Dakota graphic
State of Tennessee graphic
State of Texas graphic
State of Utah graphic
State of Virginia graphic
State of Washington graphic
State of West Virginia graphic
State of Wisconsin graphic
State of Wyoming graphic
Canadian territory of Alberta graphic
Canadian territory of British Columbia graphic
Canadian territory of Manitoba graphic
Canadian territory of New Brunswick graphic
Canadian territory of Newfoundland and Labrador graphic
Canadian territory of Ontario graphic
Canadian territory of Quebec graphic
Canadian territory of Saskatchewan graphic
Territory map graphic of the country of Mexico
Contiguous United States shape map layer graphic


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