The Rose Bedeguar Gall, Diplolepis rosae

Rose Bedeguar GallThis is a gall formed on wild roses by the gall wasp Diplolepis rosae. It is most common on Dog and Field Roses.

Rose Bedeguar Gall Diplolepis rosae   Diplolepis rosae   Diplolepis rosaeThe name Bedeguar comes from a Persian word “bad-awar,” meaning “wind brought.” It is not brought by the wind a female gall wasp lays about 60 eggs into a leaf bud and the gall develops from there.

Another name is Robin’s Pincushion, the Robin in question being Robin Goodfellow a mischievous wood sprite otherwise known as Puck.

It is also sometimes referred to as a Moss Gall due to it’s moss like appearance.

Robin's PincushionAdult wasps emerge from the gall in May. Nearly all of the adults are female with less than 1% being male. Males are not necessary for reproduction. The female is capable of asexual reproduction which means that the embryos develop in unfertilized eggs.

The eggs hatch within a week and the larvae start to eat the leaf bud.

Nobody knows why but when the larvae start to eat the bud this stimulates the plant to produce enlarged cells around the feeding larvae and it is this action that creates the gall.

The larvae grows inside the gall and goes through five instars (It sheds its skin four times) before October when it ceases to feed and enters a stage known as prepupal. It will overwinter in this state and in February or March it will moult once more and become a pupa.

Larvae taken late October.

Diplolepis rosae Larvae Diplolepis rosae Larvae   Diplolepis rosae Larvae   Diplolepis rosae Larvae


In May the adult wasps will dig their way out of the gall. The dried remains of the gall can stay on the rose for another year or longer.

Rose Bedeguar Gall Rose Bedeguar Gall   Rose Bedeguar Gall   Rose Bedeguar GallThe Taxonomy relates to the insect. The Gall doesn’t have it’s own taxonomy it is just a product of a gall wasp and a wild rose.

Kingdom: Animalia

Order: Hymenoptera

Family: Cynipidae

Genus: Diplolepis

Species: Diplolepis rosae

Moss Gall Rose Bedeguar Gall   Robin's Pincushion   Rose Bedeguar Gall

Rose Bedeguar Gall

Rose Bedeguar Gall

Rose Bedeguar GallBack to the Dog Rose

Back to the Field Rose

Back to the start




3 thoughts on “The Rose Bedeguar Gall, Diplolepis rosae”

  1. This looks like it will be a very helpful site. I will follow its progress with interest, as I can imagine using it a lot!

    My one suggestion re. layout would be it would be lovely if where you have 3 thumbnails in a row, they came to the same width as your big pictures. But that’s a pedantic comment, and it’s not important.


    1. Thank you for looking and for the feedback. I have for now added a bit of spacing to try and make the thumbnails fit better and I quite like it. I think that it looks cleaner. I do have reservations about using thumbnails at all because I don’t know how they will be displayed on other devices. I am a bit worried that it might be an incoherent jumble on a phone or tablet. It seems to work on a PC though. Thanks 🙂

      Liked by 1 person

      1. I think it works well on a pc. Just tried it out on my mobile, and the third thumbnail gets shifted to below the other two. Not incoherent, but not as nice as on the pc.


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Wild flowers from The Forest of Dean

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