European Rose Chafer (Cetonia aurata)

European Rose Beetle (Cetonia aurata) is a species of beetle belonging to the family Scarabaeidae within the order Coleoptera. It is known for feeding on the floral organs of various ornamental plants, particularly rose. Due to its high visibility during flowering periods and its potential to cause aesthetic damage to plants, the species has been the subject of ecological and agricultural research. In the literature, the rose beetle is classified among pests of ornamental plants, with its biology and control methods examined in detail.^【1】In Türkiye, it is commonly referred to as the “golden beetle” due to the color of its wings.

Taxonomic Position and Distribution

The European rose beetle is classified within the subfamily Cetoniinae of the family Scarabaeidae. It is reported to be distributed across various regions of Türkiye as well as throughout Europe, with higher frequencies observed in areas where roses and ornamental shrubs are intensively cultivated. Its distribution is directly linked to the availability of host plants and environmental conditions.^【2】

Biology and Life Cycle

The life cycle of the European rose beetle consists of four main stages: egg, larva, pupa, and adult. Larvae typically live in soil and develop in environments rich in organic matter. Their development during this stage is influenced by environmental factors such as soil structure and moisture. After completion of the pupal stage, adults emerge and become active primarily during the flowering periods of plants. Adults are reported to be most active during daylight hours and possess well-developed flight capabilities.^【3】

Close-up Image of the European Rose Beetle (Pixabay)

Feeding Behavior

Adult rose beetles feed on the petals, pollen, and nectar of various ornamental plants, with roses being the primary host. The damage caused to floral tissues during feeding reduces the visual appeal of plants and can lead to economic losses in ornamental plant production. Observations in natural habitats indicate that rose beetles are often found feeding on the same plants alongside other insect species, highlighting their role in ecosystem interactions.^【4】

Agricultural and Economic Importance

The European rose beetle is regarded as a pest in areas dedicated to ornamental plant production. Damage to flowers can result in quality degradation of commercially valuable plants. This necessitates a thorough understanding of the beetle’s biology and population dynamics to develop effective and sustainable control methods.^【5】

Control Methods

Biological Control

Research on biological control methods for the European rose beetle has highlighted the use of entomopathogenic nematodes. Studies examining the effect of Heterorhabditis bacteriophora on rose beetle larvae have reported high mortality rates when applied at specific dosages.^【6】

Plant-Derived Substances

Some studies have evaluated the effects of extracts derived from cyclamen (Cyclamen spp.) roots on rose beetle larvae. These studies report that such extracts reduce larval feeding and can exhibit lethal effects at certain concentrations. This potential of plant-derived substances contributes to scientific efforts aimed at developing alternative pest control methods.^【7】