05/11/2026
🚨 🚨Today, we are taking a closer look at an invasive species that causes major damage despite its small size: the Japanese beetle (Popillia japonica).
Not all invasive species are threatening at first glance; the Japanese beetle is a perfect example of this. This emerald colored insect may seem harmless, maybe even beautiful at first, but it has become one of the most destructive pests in the southern United States.
These beetles are especially known for their appetites. Adult Japanese beetles gather in groups and feed on plant leaves, flowers, and fruits, leaving a skeleton-like appearance where only the veins of the plant remain. This damage can reduce a plant's ability to photosynthesize, causing harm to over 300 plant species.
But the destruction doesn't stop above ground. In their larval stage, Japanese beetles live as grubs in the soil, feeding on grass roots, often causing large patches of dead grass in lawns and pastures, which can harm landscaping and agriculture in the area.
What makes this species successful in its invasion is its lack of natural predators in the U.S., which allows populations to grow quickly and spread easily. Their wide diet, along with their adaptability, makes them difficult to control, often requiring a combination of chemical, biological, and cultural management strategies.
So, next time you go out to water your rose bushes and spot one of these metallic insects, don't be fooled by its looks; this tiny invader will try to take over.
📷: Japanese Beetle by iNaturalist user “tygah_shahk” (https://www.inaturalist.org/observations/50406188)
