51 genera in 8 tribes worldwide; ca. 350 spp. in 32 genera of 6 tribes north of Mexico(1)(2)
With a hair-margined clypeus
and the first tergite
bears two longitudinal parallel ridges. Females frequently have stalked eggs projecting from their ovipositor.
Ectoparasitoids of sawflies or Lepidoptera larvae(2)
some Tryphoninae carry their eggs on the ovipositor, attached by short stalks which they then use to attach the eggs to the cuticle of the host.
The parasite larvae usually complete their development in the host’s cocoon(3)
1. larvae attached to host. 2. larva, final instar 3. larva building a cocoon. 4. ready to emerge pupa 5. adult
still not in the Guide are as of 7/17/2010:
Eclytini (Holarctic; a single genus represented by a single species in NA)
Idiogrammatini (Holarctic; a single genus represented by 4 spp. in NA)