I have some impressive footage of a Gasteruption jaculator ovipositing inside a common yellow face bee cell inside my observation nest box and the filming of the larvae eating bee larvae/forage and cannibalism with its Gj neighbour! Has anyone any proof positive, papers, similar that this species actually uses O. bicornis as a host? I cannot find any other than one found that is German in German. The film will be on my web site www.nurturing-nature.co.uk as I await more developments.