Adults have an abnormal abdomen; the tergites are broken in half and have parts missing or parts belonging to different segments are reunited. Expression of the phenotype is variable. Viability and fertility in both sexes is inversely related to the degree of expression of the tergite abnormality.
RK2. Tergites highly abnormal, partly missing and have different segments united. Expression variable. Viability and fertility inversely related to tergite abnormality.