Out of The Ordinary


Robin’s Pincushion (Diplolepis rosae) – Also called the Bedeguar Gall, this strange but beautiful, almost alien, fibrous growth is caused by the larvae of a tiny wasp. It is found on the stems of wild roses, and each of these can contain many grubs which feed on the plant tissues inside a woody heart filled with chambers, but apparently do the plant no serious harm.

I am fascinated by plant galls, which often go unnoticed, and how organisms like wasps, flies, mites and even fungi, can transform living tissue into these abnormal, often bizzare forms.


Robin's Pincushion Diplolepis rosae

Double-click image for a closer look.


32 thoughts on “Out of The Ordinary

  1. Once again, you’ve opened my eyes and made me learn something new! I was just this morning taking photos of dog rose blooms in the forest, and in autumn my dogs enjoy plucking the hips off and eating them (good source of vitamin C, it turns out). I’ve never noticed one of these gauls on the local wild dog roses, but I’m going to start looking (assuming a similar wasp lives in this area, and some quick research tells me they likely do). Thank you!

    Liked by 1 person

  2. Galls are one of the more alien types of beauty in nature. I photographed a fly some time ago which turned out to be a species of gall fly, and was interested to see the cause of these strange things.

    Liked by 1 person

  3. Amazing! I have been wondering where the wasps in our backyard are coming from because they seem to be ever present lately. I just happened to notice three holes in the border of our garden bed. They built nests in the ground. That’s why I missed them. I kept looking up in the eaves for their home. Now you’re telling me they can build in rose bushes too?! Amazing insects! Thank you for this beautiful photo Pete!

    Liked by 1 person

Your thoughts ...

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 )

Google photo

You are commenting using your Google 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.