- Hi... I have been bitten by one of these Daddy Long Legs and so has my son. No confusion about the spider either. Little round body and thread-like long legs that are easily damaged. My own experience was when I had one on me and my mum said, 'Don't worry, they can't bite' and I watched as it lowered its body and bit. My faith in my mum was diminished after that... understandably. Then, more recently, my young son was bitten and he came up in a lump that made it look like his arm was broken. A severe allergic reaction. The bite marks became evident over a period. The skin had a greyness and I needed to give him antihistamines. So YES, they can bite and do pierce the skin.