RK2. Adults lack some peripheral ommatidia, usually in an irregular manner, producing a rough eye and a notched border. The head is an abnormal shape and head macrochaetae are deranged or absent. The palps are absent or grossly deformed. Thoracic bristles are deranged. Wings are often unexpanded.
Some peripheral ommatidia absent, frequently in an irregular manner, giving a rough eye and a notched border. Shape of head abnormal; head bristles deranged or absent. Palps absent or deformed. Thoracic bristles deranged. Wings often unexpanded. Good viability and fertility in both sexes. RK2.