Parasiten der Honigbiene und die durch dieselben bedingten Krankheiten dieses Insects.

This work offers a clear, systematic look at the tiny creatures that inhabit honey‑bee colonies, from true parasites that feed on a bee’s body fluids to opportunistic riders that visit only briefly. By sorting these organisms into external and internal groups, and further distinguishing permanent residents from temporary guests, the author untangles a web of relationships that many beekeepers once took for granted.

Drawing on personal observations and the latest scientific thinking of the mid‑nineteenth century, the writer explains why certain larvae are better described as predators rather than parasites, and points out which insects—such as the bee‑mite Phora incrassata or the internal worm Mermis albicans—actually threaten hive health. Richly illustrated with three lithographed plates and dozens of detailed figures, the book remains a valuable reference for anyone interested in the natural history of bees and the subtle challenges they face.