Theridion attritum

Taxobox
name = "Theridion attritum"


image_caption = dorsal abdomen of female
image_width = 250px
regnum = Animalia
phylum = Arthropoda
classis = Arachnida
ordo = Araneae
subordo = Araneomorphae
familia = Theridiidae
genus = "Theridion"
species = "T. attritum"
binomial = "Theridion attritum"
binomial_authority = (Simon, 1908)
range_

range_map_width = 250px
synonyms = "Billima attrita"

"Theridion attritum" is a spider from Western Australia. While it was formerly placed in the families Araneidae and Theridiosomatidae' in 1967 it was found to belong to the family Theridiidae, and indeed to the genus "Theridion". While all members of the first two families have a large colulus, while "T. attritum" lacks one altogether. It is not to be confused with "Anelosimus attritus", which was for a time known as "Theridion attritum".Levi 1967]

Description

"T. attritum" is 2.2mm long. It has a yellowish carapace with a black line all around. The sternum is yellow-orange with gray pigment, the legs are yellow with darker marks. The top of the abdomen is whitish with a median darker longitudinal band, irregular in outline and bordered on each side by a white band. The venter is black with a white transverse pigment band. The species is surprisingly similar to "Theridion melanurum" and "Theridion varians", but much smaller.

Footnotes

References

* (1967): The Spider Genus "Billima" Simon. "Psyche" 74: 340-341. [http://psyche2.entclub.org/articles/74/74-340.pdf PDF]
* (2007): [http://research.amnh.org/entomology/spiders/catalog/index.html The world spider catalog] , version 8.0. "American Museum of Natural History".

External links