Milan's chafer

Taxonomic position: Protaetia milani belongs to the order Coleoptera, family Scarabaeidae, and subfamily Cetoniinae. This species is part of a diverse group of flower chafers that play a complex role in ecosystems, though they can become significant agricultural pests depending on their population density.

Host plants and damage: This pest primarily targets ornamental flowering plants, orchards, and various shrubs. Adults feed on floral parts, specifically petals, stamen, and pistils. This damage is particularly detrimental during the blooming season, as it destroys the reproductive organs of the plants, leading to severe aesthetic degradation and potential fruit crop failure.

Biology and life cycle: The life cycle of Protaetia milani involves egg, larval, pupal, and adult stages. Larvae typically reside in the soil or in decaying organic matter such as compost or rotten wood, where they function as detritivores. Adults emerge in late spring or summer, and they are active flyers that seek out nectar and flower tissue for feeding and reproduction.

Harmfulness: The primary economic damage is caused by the adults. Because they feed gregariously on floral structures, a large population can strip an entire garden of its blossoms within a few days. While larvae generally do not feed on living roots, their presence in high densities can indicate a build-up of organic waste that needs management.

Control measures: Implementing effective management strategies is essential for protecting ornamental gardens:

• Hand-picking beetles in the early morning hours when they are less mobile and sluggish.
• Using light traps or attractant-based traps specifically designed for scarab beetles.
• Application of approved insecticides during the peak of adult activity if infestations are severe.
• Improving sanitation by removing decomposing plant materials and organic debris from the immediate vicinity of sensitive plants.