Numbers
>42,000 described spp. in ~2,600 genera worldwide
(1)Identification
Pronotum more or less triangular in profile, extending to tegula or nearly so. Antennae threadlike, usually at least 16-segmented. Hind trochanters 2-segmented. Ovipositor rises in front of apex of abdomen, non-retractable, often as long or longer than body. FW without a costal cell.
recurrent vein(s) in Braconid and Ichneumonid wings
Remarks
Many are biocontrol agents used in agriculture/forestry