abdominal 1 ventral denticle belt
abdominal segment 1
abdominal segment 2
abdominal segment 3
abdominal segment 4
abdominal segment 5
abdominal segment 6
abdominal segment 7
abdominal tergite 1
haltere
Kolbchen
Transformation of posterior portion of haltere toward wing, replacement of A1 tergite by post-notal tissue, no extra legs. A1 setal belt is intermediate between A1 and T3 type belts. Ventral pits on all abdominal segments.
N. Shaw, May 1973.