Theridion
Guides
Theridion cheimatos
Theridion cheimatos is a cobweb spider species in the family Theridiidae. It was described by Gertsch and Archer in 1942. The species is known from the United States, with records from North America. As a member of Theridiidae, it constructs irregular three-dimensional cobwebs and possesses comb-footed spines on the hind legs for manipulating silk.
Theridion differens
Different Cobweb Spider
Theridion differens is a species of cobweb spider in the family Theridiidae. It is found in the United States and Canada, with records from Alberta and British Columbia. The species was described by Emerton in 1882. As a member of the genus Theridion, it constructs the irregular, three-dimensional webs characteristic of this group.
Theridion morulum
Theridion morulum is a species of cobweb spider in the family Theridiidae, first described by O. Pickard-Cambridge in 1898. It belongs to a large genus of small spiders known for their irregular, three-dimensional webs. The species is recorded from the southwestern United States and Mexico, but detailed biological information appears limited in available sources.
Theridion petraeum
Theridion petraeum is a cobweb spider in the family Theridiidae, described by L. Koch in 1872. The species has a broad distribution spanning North America, Europe, North Africa, the Caucasus, and Russia extending to the Far East and Kazakhstan. Records indicate presence across multiple continents including Africa and northern Asia. As a member of Theridiidae, it constructs irregular three-dimensional webs, though specific details of its biology and ecology remain poorly documented in available sources.
Theridion rabuni
Theridion rabuni is a species of cobweb spider in the family Theridiidae. It is known from the United States and the Bahama Islands. Little specific information is available about its biology, ecology, or behavior beyond its taxonomic placement and geographic distribution.
Theridion submissum
Theridion submissum is a species of cobweb spider in the family Theridiidae. The species was described by Gertsch and Davis in 1936. It is found in the United States, Mexico, the Bahama Islands, and Jamaica. Like other members of the genus Theridion, it constructs irregular three-dimensional webs.
Theridion transgressum
Theridion transgressum is a species of cobweb spider in the family Theridiidae, first described by Petrunkevitch in 1911. It belongs to the large genus Theridion, which contains numerous small-bodied spiders that construct irregular, three-dimensional webs. The species is recorded from the United States and Mexico. Very little specific biological information is available for this species.
Theridion varians
Variable Cobweb Spider
Theridion varians is a species of cobweb spider in the family Theridiidae. It has a broad native distribution spanning Europe, North Africa, Turkey, the Caucasus, Russia, Central Asia, and China. The species has been introduced to North America, where it is now established in Canada and the United States. Four subspecies are recognized, reflecting geographic variation across its range.