identification araignee

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Anatomy of a spider

The body of spiders is composed of two parts connected by the pedicle.
At the front, the cephalothorax (also called prosoma) composed of cephalic part and the thorax.
At the back, the abdomen (also known as the opisthosoma).

In general, the spiders have eight eyes and sometimes six; in some cases, however, cave spiders may have hypertrophied, or non-existent eyes. The layout of the eyes can also vary from one family to another, or even from one genre to another.

Three eye provisions are to be retained for the posterior eyes:

the eyes are recurves, i.e. they are in curved line backward
the eyes are right
eyes are procurves, i.e. they are in curved line towards the front.

Good to know:

The size of a spider is measured from the tip of the cephalothorax in the posterior end of the abdomen.
It does not account of the chelicerae, dies or the legs.

  • araignee vue dorsale
  • araignee vue ventrale
  • araignee vue de face

Views (© Pierre Oger 2011)

Internal morphology of the spider: animal arthopode with 8 legs and whose body is not segmented.
Simple eye: uncomplexed Visual organ of a spider.
Venom gland: glandular organ of a spider that produces venom.
Brain: seat of the mental abilities of a spider.
Vacuum cleaner jabot: part of the digestive tract which sucks.
Digestive gland: glandular organ produces digestive enzymes.
Anterior aorta: part forward of the blood vessel that carries blood from the heart to the organs.
Intestine: last part of the digestive tract.
Heart: blood-pumping organ.
Ovary: the egg-producing reproductive organ.
Silk gland: glandular organ wires.
Anus: exit of the digestive tract.
Track: opening in which the spider emits his sons.
Oviduct: led on eggs.
Seminal receptacle: part of the spider who receives the seed.
Lung: respiratory organ of a spider.
Esophagus: first part of the digestive tract.
Venomous hook: hard conduit by which the spider injects her venom.
Venomous channel: leads carrying the venom.
Chelicere: crochet even, venomous, located on the head of the spider.

Text and picture the Visual Dictionary source
photo 2 (of Adrien Chorein) read the full artcle byMarina CHAVERNOZ -June 2011 source

It's not rocket science - spiders

Published May 24, 2013 the official channel of the issue of France 3
It's not sorcerer, the discovery and the science magazine.

Fred, Jamy and Sabine lead this week to the discovery of spiders. There are 300 million years, the spiders were already present on Earth, before dinosaurs. They survived the disaster and have adapted to almost all environments. They are found anywhere, the equator to the poles, under stones, in corners of walls, shutters in trees, in the Earth, and even in the water. There are more than 36 000 species worldwide, of which 1500 live in France. Why is the spider closest to the scorpion as the Ant? How the spider made its silk thread? How does weave a Web as regular and solid? How it liquifies its prey before eating? On the back of their mother or by air, how small spiders leave them their nest?