Predatory and parasitic insects in greenhouses of Botanical Garden of P.J.Šafárik University in Košice, Slovakia.
The paper deals with predatory and parasitoid insect taxa registered in Botanical Garden of P.J. Šafárik University in Košice in greenhouses after excluding the use of broad-spectrum pesticides since April 2006. Special attention is paid to species occurring spontaneously, i.e. those ones which invade greenhouses from outdoors or are accidentally introduced by humans. The intentionally released biological control agents are also mentioned. This preliminary survey presents some observations on natural pest control without, or with only occasional, direct human interventions against the most important pests of plants in greenhouses. On the other hand, natural enemies of beneficial species also occurred here, including several cases of hyperparasitic relations. These preliminary results indicate some successive changes in predatory and parasitic insect species composition in complex environment of heated greenhouses with a mix of tropical, subtropical and temperate flora during 6 years. Some species are interesting also from faunistic viewpoint.