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Try this link, it is very informative
https://en.wikipedia.org/wiki/Crane_fly#...
A Daddy-Long-Legs in the American sense = a Harvestman which is member of the Opiliones .
In the UK we use the term Daddy-Long-Legs to refer to the Crane-Fly such as Tipula Paludosa http://en.wikipedia.org/wiki/Crane_fly. Other names for this fly, common at this time of year in the Northern Hemisphere, are Jenny-Long-Legs (in Scotland), and Tommy-Spinner or Jimmy Spinner in parts of Yorkshire.
There is also the confusion caused by the "Garage Spider" Pholcus Phalangioides sometimes called the "Daddy-Long-Legs Spider".
Look a bit larger than the lacewings I have seen here in the UK. We often get them in the communal stairway of the flats where I live.
NOT the true Daddy-Long-Legs or Crane Fly such as Tipula paludosa or the Harvestman such as Leiobunum rotundum.
I have lots of these spiders in my lock-up garage in the Thames Valley of England and AFAIK they are harmless.