The thorax is slightly narrow and the abdomen is very slender and is often sharply flexed at the junction of the 4th and 5th abdominal segments. Wings are shorter than normal, slightly broad and are often held atypically. Eclosion is delayed. Viability is approximately 15% of wild-type.
Thorax narrow. Abdomen slender, often flexed between fourth and fifth segments. Wings short, rather broad and often held atypically. Eclosion delayed. Viability about 15% wild type. RK3.