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Tetragnatha montana
Tetragnatha montana

Tetragnatha montana
The Tetragnatha montana - order Spiders (Araneae), suborder Araneomorphae - belongs to the family of long-jawed orb weavers (Tetragnathidae), and to the genus Tetragnatha. Scientific synonyms include: Tetragnatha solandri and Tetragnatha extensa montana.
Tetragnathidae - Tetragnatha montana
Tetragnathidae - Tetragnatha montana
The Tetragnatha montana is widespread throughout a large part of the Palearctic (from Western Europe to East Asia) and is the most frequently occurring type of its genus. In Germany and Central Europe they are non endangered.
Tetragnatha montana with web
Tetragnatha montana with web
The abdomen of the male has nearly the same markings, but is somewhat darker and reddish-gold in colour. The colour contrasts are weaker than that of the females, and there are much fewer white or silvery areas. Their underside is brown, with wavy borders and has a dark band running lengthwise. The legs differ significantly in their length, colour and shape, with those of the females are beige, brown or yellow-brown coloured, while those of the males appear darker in colour. Whilst the first, second and fourth pairs of legs are very long, the third pair of legs is relatively short. This pair helps the spider to hold onto thin twigs or grass when resting, while the other pairs of legs are stretched out. There are frequently dark spots and rings at the ends of the legs.
Due to their appearance, the Tetragnatha montana can be confused with the Tetragnatha extensa and the Tetragnatha pinicola. Tetragnatha montana prefer to live in the shade of vegetation or in sufficiently moist habitats near water. They are found on trees, shrubs, herbaceous plants or reed stems, in the vicinity of rivers, streams, lakes, ponds, pools or ditches. Even moorland, swamps and lowland forests serve as habitats.
The adult (mature) Tetragnatha montana appear in the open from May to September and the earliest are already visible in February. They feed on flies and mosquitoes. It is for this purpose that they build small orb-webs (an upright web formed of threads radiating from a central point, crossed by radial links that spiral in from the edge) between branches and stems. The Tetragnatha montana lies stretched out, outside its web, waiting for the prey. If an insect flies into the web , the spider injects it with poison and the poison turns the insides of the prey into fluid. The insect is then tied up like a parcel and stored not far off from the web. The spider then starts repairing the web. If the spider gets hungry it will eat the stored prey later on.
Birds and insectivores are natural enemies of the Tetragnatha montana. As these spiders are very light , they can walk on water without sinking.

Description of images / photos
Photography with Cameras
Nikon D3x, Nikon D300, Canon 50D
Image editing with Photoshop
1. Tetragnatha montana
2. Tetragnathidae - Tetragnatha montana
3. Tetragnatha montana with web
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