Vandelay is right, a significant proportion of lift comes from the fuselage.
This is most noticeable to pilots when existing designs are stretched , and the fleet mixes both very short and long-bodied variants of the same a/c. The short ones tend to be close-coupled and twitchy, whereas the longer ones are very stable to fly...(eg) DC9-15 vs DC9-41 or -51, for example.
I was once told what proportion of lift my current mount (DC10) generates from the fuselage, I cannot remember the exact figure but it was a lot!