Adult sawflies, except for those in the family Cephidae, have structures that latch onto the underside of the forewings to help hold the wings in place when the insect is at rest.

• 广腰亚目有别于其他大部分膜翅目的特点是腹部和胸部（见图片），和毛虫样的幼虫（见下文）。他们共同的特点是外露的产卵器，看起来很像锯齿。