I don't know what fruit this is. The tree was originally a Bradford Pear but was frozen in a late spring freeze. I dug the roots and replanted in the very back of the yard and quite a large tree has grown.
It has white flowers and for the first time some fruit has formed. I didn't notice the fruit earlier this fall and happened upon this frozen bee when I was walking around the yard recently in freezing temperatures.
It was very, very cold when I took this picture.