Thrips parvispinus (“Pepper Thrips”): The Importance of Inspecting Plants and Dipping Cuttings from Florida

I’ve written about the tropical pest Thrips parvispinus, now being called “pepper thrips”, infesting certain tropical ornamentals in Canada before. But it appears this pest has become widespread in Florida.

As Ontario sources much of its plant material from Florida, it’s a good idea to exercise caution, even on non-tropical plants. The known host range of this pest is evolving, and thrips have the potential to hitch-hike on less-preferred plant hosts and spread to more preferred hosts in your greenhouse.

Read on for information on the situation in Florida and what you can do to help protect your greenhouse from this pest.

Continue reading “Thrips parvispinus (“Pepper Thrips”): The Importance of Inspecting Plants and Dipping Cuttings from Florida”

Tropical Thrips Species Intercepted on Plant Material in Ontario: Be Aware – But Don’t Panic.

This post was co-written by A. Summerfield (Vineland Research and Innovation Centre) and S. Jandricic.

Figure 1. Thrips parvispinus is generally dark coloured (though the head and thorax can be lighter than the abdomen), has bright red ocelli and clear patches at the top of its wings.

Increases in global trade, along with decreased use of harsher broad-spectrum pesticides makes it easier for insect species to move around the world. Because of this, it is becoming more common to find unusual pests coming in on plant material. It’s important that we are prepared and know what to do when something like a new thrips species makes an appearance.

The tropical thrips species Thrips parvispinus has been popping up in various parts of the globe in recent years and was intercepted on plant material in two Ontario greenhouses in 2021/2022. Read on to learn what we know about this species and what you should do if you suspect you have them.

Continue reading “Tropical Thrips Species Intercepted on Plant Material in Ontario: Be Aware – But Don’t Panic.”