About 50 species belongs to this family and eleven of them are described living in NW-Europe. Two genera can be found. They probably arose from the same evolutionary line as the Araneids because they also build orb webs. The family of the Tetragnatha is often found in damp, swampy habitats. These spiders have long slim bodies and their abdomen has a metal shiny look. They build orb webs with an open center like the Metidae.
Three species are living in Europe. During daytime, they can be found at ground level. At night they move upwards in the vegetation.
They do not make webs.
Pachygnatha clercki female and male
Eight species occurs in NW-Europe. They have an extreme elongated abdomen, long legs and extreme large chelicera (jaws). They spin an orb web with a hole in the hub. Tetragnathidae do not use many radii in their web.
|Tetragnatha extensa closeup||Tetragnatha extensa mating.|
Notice the large fangs, which are locked together to fetch the partner.
|Tetragnatha extensa female||Tetragnatha montana male||Tetragnatha montana female|
Ed Nieuwenhuys, July 5, 2000