Jerarquía taxonómica:
Ichneumonidae → Diadegma insulare (Ashmead, 1894)

Familia:
Ichneumonidae

Autor:
(Ashmead, 1894)

Sinónimos:
Angitia plutellae Viereck, 1912
Campoplex (Angitia) hellulae (Viereck, 1912)
Limneria polynesiale (Cameron, 1883)
Mesoleptus insularis Ashmead, 1894
Campoplex (Hyposoter) pygmaeum (Viereck, 1925)
Sagaritis congregator (Walley, 1926)