The cellar spider you have more then likely come across in your houses or sheds, very easy to identify due to their long slender legs. If they feel threatened they will often swing their body around while attached to their web manically that they become very hard to see which could be a form of camouflage.
Taxonomic Classification- Kingdom: Animalia
- Phylum: Arthropoda
- Class: Arachnida
- Order: Araneae
- Family: Pholcidae
- Sub Family:
- Genus: Pholcus
- Species: phalangioides