Overview
Flower Beetles are a diverse group of insects within the scarab beetle family (Scarabaeidae), often recognized for their metallic coloration and association with flowers, fruit, and ornamental plants. While many species are beneficial pollinators, others can become nuisance pests when they feed excessively on blossoms, fruits, or foliage. Their dual role as both pollinators and plant feeders makes them an important but sometimes problematic presence in gardens and agricultural systems.
Flower beetles (subfamily Cetoniinae) are a diverse group of scarabs known for their vibrant, often metallic coloration and their unique relationship with flowering plants. Unlike many other beetles that feed on foliage or wood, adult flower beetles are primarily “pollen and nectar feeders,” frequently seen hovering around blossoms during the day. They are often called fruit chafers because several species also congregate on overripe or damaged fruit to feed on the sugary juices. One of the most famous members of this group in North America is the Bumble Flower Beetle, which is often mistaken for a large bee due to its fuzzy body and loud, droning flight.
The life cycle of the flower beetle is generally beneficial to the soil but can occasionally cause concern for gardeners.
These beetles are commonly found in warm seasons when flowers are abundant. They are especially attracted to plants producing strong scents or high amounts of nectar. In moderate numbers, their presence is often tolerated or even welcomed. However, large populations can lead to noticeable damage, particularly in ornamental landscapes and fruit-bearing plants.
Identification
- Medium to large beetles with oval-shaped bodies
- Often metallic green, bronze, or iridescent coloration
- Strong legs and hard wing covers
- Larvae are white grubs found in soil
Habitat
Flower beetles inhabit gardens, orchards, meadows, and forest edges. Larvae develop in soil rich in organic matter, while adults are found on flowers, fruits, and foliage.
Behavior and Damage
Adults feed on pollen, nectar, petals, and soft fruit tissue. While feeding, they may damage flowers and reduce fruit quality. Larvae typically feed on decaying organic matter, contributing to soil health.
Damage is usually cosmetic but can become significant in high populations. Beetles may also attract other pests by exposing plant tissue.
Prevention and Control
Hand removal, reducing overripe fruit, and maintaining garden sanitation can help control populations. Encouraging natural predators and limiting attractants are also effective strategies.