Reference
Matthias Riedel, Pelle Magnusson (2014): A contribution to the Swedish fauna of Ichneumoninae
(Hymenoptera, Ichneumonidae), with descriptions of the female of
Cratichneumon armillatops RASNITSYN 1981 and the male of
Aoplus biannulatorius (THUNBERG 1824) – Entomofauna – 0035: 433 - 448.