الفهرس 
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Abstract
Spiders are one of the most species-rich groups in the animal kingdom.
They are found in a variety of habitats, from mountain tops to underground
caves. The variety of species, each with its own particular ecological
requirements, inhabit all kinds of terrestrial ecosystems. More than 48,248
spider species belonging to 116 families were described so far and many still
waiting for discovery and description. This makes spiders an excellent group to
survey when assessing the health of communities. In Egypt and to the best
knowledge of the author, only 405 species belonging to 204 genera and 41
Families were described till the year 2019.