Abstract
A total of 21 newly found mutants of the housefly, M. domestica were described, and revised linkage maps were prepared and presented. Sixteen marker loci for the 1st linkage group, 14 loci for the 2nd linkage group, 17 loci for the 3rd linkage group, 7 loci for the 4th linkage group and 6 loci for the 5th linkage group were plotted on the maps.