Reference

K. Purrini, H. Keil (1989): Ascogregarina bostrichidorum n. sp. (Lecudinidae, Eugregarinida), a new gregarine parazitizing the larger grain borer, Prostephanus truncatus Horn (1878) (Bostrichidae, Coleoptera) – Arch. Protistenkunde – 137: 165 - 172.