Update 10/6/09
883 Craft
55 Species
I had not yet asked if there where also some ships that where parked inside of larger ships. I asked what the total number of craft are including the vessels parked inside of "mother ships".
Total number of craft including those parked in the Mother Ships (Space Based UFO carriers) = 4,423
Total number of mother ships (mother ship is classified as any ship that carries smaller craft inside of it) = 883
So I had not been making the question specific enough. I was only asking how many craft where parked around the Earth. I had failed to ask how many craft where parked inside of those parked around the earth.
Then If I ask the question of how many feet across is the smallest mother ship = 4,715 ft.
Then if I ask the question of how many miles across is the largest mother ship = 24.3 mi.
So, my bad on not being specific enough with the questions.