A Positive Item About Ragwort

Ragwort gets a lot of bad publicity, and a lot of time and expense is dedicated to its control. There is no doubt that it can pose a threat to livestock if it is incorporated into hay as the wilting process makes some nasty alkaloids available in livestock feed, but there is also a positive side to Ragwort that garners fewer news reports. Many people have seen the yellow and black striped caterpillars of the Cinnabar moth feeding on Ragwort, but how many have seen the Ragwort Fly Sphenella marginata? It is one of the tephritid flies, a type of picture-winged fly, and its larvae form galls on Ragwort. Other species of tephritid fly have been seen regularly on thistle in the quarry and other areas of the Country Park, but this is the first time the Ragwort Fly has been found here. It is heartening to think that the ever-present Ragwort is helping to increase biodiversity in the Country Park.

Sphenella marginata

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.