The black dots are integrades not Fla LMB (ie Lone Star Legacy Bass). There are more studies on the subject and IIRC Ill was one of them. I think the black dot you note is an outlier and may be wrong. Genetic testing has come a long way since the study/map. I can account from other sources the other black dots and Fla LMB but not MD and Ill.

Because of the remote chance that a Fla LMB could get in your pond and do real damage to your genetics I would not do that. I might try an F-1 integrade especially if the northern half was from a northern sourced fish. Just my thoughts.