Legs are weak, frequently deformed and generally shortened due to the reduction in length of tarsal segments. Wings are abnormal in shape, and are held abnormally. Flies cannot move and die immediately after eclosion.
Legs weak, frequently deformed and generally shortened as a result of reduction in length of tarsal segments. Wings atypically shaped and abnormally held. Flies so crippled they cannot move; they die soon after eclosion. RK3.