There is a arachnid (spider kind) population at my balcony, can you please identify the species?

Will those insects, arachnids harm my plants ?





It is clearly red, balcony is an open-top roof balcony; it has access to the roof. I guess those spiders are also under the roof tiles, because I also see them on the roof tiles.





How could I deal with this problem.





Here is a close photo:





http://img366.imageshack.us/img366/5069/...

There is a arachnid (spider kind) population at my balcony, can you please identify the species?
http://www.evergreengardenworks.com/mite...





See if this describes what you have, it gives treatment options.
Reply:I am noooooo expert, but they look similar enough to spider mites. If you are finding them on your plants, use a weak soapy solution to spray the plants and they should go away. The body/legs don't look right, but spider mites can be red and I'm sure they have the potential to harm your plants. The soap solution, I've found harmless.





Good luck,





Rob





Edit:





It can take a while for damage to show up or to see the mites on the plant. I've only had problems with the tiny black ones, usually on things in the rose family. Can't hurt to spray the soap solution, though!
Reply:I think it is a woodlouse spider..........it is also called spider mite.........Its scientific name is Dysdera crocata and it belongs to the family Tetranychidae and the sub-class Acari.........