Personnal communication from: Dennis McKearin, University of Texas, Southwestern Medical Center
To: Bloomington Drosophila Stock Center
Subject: new stonewall alleles
Dated: 4 August 1998
Information communicated:
'My lab has checked two P-lethals at 70D, #P1227 and P2087, for allelism to the female sterile stonewall gene. Both carry P-elements in 
stonewall gene sequences. Both are viable but female sterile over Df(3L)fzM21 which removes stonewall. Both are also viable but sterile 
over previously identified stonewall alleles in our collection. Therefore, these are new stonewall alleles, almost certainly caused by the 
P-element inserts, on chromosomes that are mutant for a separate, essential locus of unknown identity.'
Note from K.M.:
stock P1227 carries P{lacW}l(3)s9999s9999
stock P2087 carries P{lacW}l(3)j6C3j6C3