Monday, August 6, 2012

Kidney Garden Spider (Araneus mitificus)

Photos in this post were taken in Bengkulu Sumatra Indonesia. This spider is from the family of Araneidae under genus of Araneus. The scientific name for this spider is Araneus mitificus (Simon, 1886).

This spider has globular abdomen covered with fine hair. The dorsal surface is covered with patches white pattern and black patterns. In the upper center is a characteristic large kidney-shaped marking from which it derives its common name. Immediately below it are two small but prominent black pits (fovea). The markings on the back of the spider can resemble a human face if viewed from the front

The ventral side of the abdomen is a uniform green. The cephalothorax is yellowish, or green in color. It is narrower at the front than at the back and also covered with fine pubescence. They have eight eyes arranged in two recurved rows. The front row of eyes are larger and more recurved than the back row. Lateral eyes are close together and mounted on black tubercles. The legs are moderately strong and long. They are  pale green in color.  The size of the body is about 4mm.

Araneus mitificus builds orb webs that are characteristically missing a section. The spider does not rest on the center of the web, but instead builds a silk-lined sanctuary in a leaf at the margins. The leaf is bent at the edges and roofed with a mesh of silk.

Phylum : Arthropoda - Arthropods
Class : Arachnida - Arachnids
Order : Araneae - Spiders
Infraorder : Araneomorphae - True Spiders
No Taxon : Entelegynes
Family : Araneidae - Orb Weavers
Genus : Araneus
Species : A. mitificus
Binomial name : Araneus mitificus (Simon, 1886)


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