Tetragnatha montana, commonly known as the silver stretch spider,[2] is a species of long-jawed orb weaver from the family Tetragnathidae that has a Palearctic distribution.

The name silver stretch spider refers to its shiny metallic colour and its habit of extending its legs into a stick like shape.

The silver stretch spider was described by the French naturalist Eugène Simon in 1874 in his work Les arachnides de France.

[4] The male has a paracymbium (a genital appendage arising from the base of the cymbium) with a mostly hook-shaped lateral process.

[5] These are caught in the spider's orb-web, which is an upright web formed of threads radiating from a central point, crossed by radial links that spiral in from the margin, between branches and stems on trees, bushes and low vegetation.

[7] The spider sits stretched out, near the web, waiting for the prey, difficult to detect due to the stick like shape adopted.

[8] If an insect flies into the web it is caught in the silk and the spider bites it injecting venom which liquifies the prey's internal organs.

[5] The female then produces a dark green cocoon where she stores the fertilised eggs, this is encased in a fine white web.

These parasites can influence the sex ratio of the host's progeny and in T. montana were apparently more common in females than males.