trichome & mesothoracic femur | posterior
Ubx alleles from D.melanogaster and D.simulans produce different trichome patterns in identical hybrid backgrounds. Ubxst1/(mel)+ has a sector of naked cuticle corresponding to between 12-18% femur length, Dsim\UbxT5/(mel)+ has a sector of naked cuticle corresponding to between 18-32% femur length, Ubxst1/(sim)+ has a sector of naked cuticle corresponding to between 38-54% femur length, Dsim\UbxT5/(sim)+ has a sector of naked cuticle corresponding to between 54-56% femur length.