Tail muscles such as the levator caudae and depressor caudae participate in maintaining stability.
The North Node is also called Caput Draconis, or Dragon's Head, whilst the South Node is also called Cauda Draconis, or Dragon's Tail.
Wingless Aphids: Body light green, spindle shaped; all of legs dusky; cornicles light green, reduced and cone shaped; antennae very short and dark at tips; projection above cauda.
The posterior part of the main jaws has a paired cauda.
Cauda long, flexed ventrally in arch("U" shape), its tip not extending below the margin of the ostium.