Sigalphinae is a subfamily of braconid wasps,[1] containing 8 genera and less than 50 described species.[2]
While rare, they have a worldwide distribution. Sigalphinae can be distinguished from other subfamilies of Braconidae by the combination of the hindwing with vein CUb present, the forewing with vein M + CU tubular and second submarginal cell longer than wide, the petiole with a pair of longitudinal carinae, and a metasoma that is not laterally compressed.
All species with known hosts are koinobiont endoparasitoids which attack larval Lepidoptera from the families Noctuidae (most species) and Geometridae (Minanga patriciamadrigalae).