Two from Monkstown Wood

[jdoherty]

Thanks again Mike.

John

[Hobjob]

[quote=Lancashire Lad;435406]

Originally Posted by jdoherty

The first pic, which I think is some kind of gall, was taken in Monkstown Wood in July 2007.....



Looks like this might be on a wild rose leaf (maybe dog rose)?

I'm leaning towards a "Smooth Pea Gall", which are formed on rose leaves by the Diplolepis sp. gall wasps - (Possibly Diplolepis nervosa).

regards
Mike.

I'm voting for Smooth Pea - Diplolepis eglanteriae, a gall wasp, and like most galls specific to one host, the Dog rose in this case.

Diplolepsis nervosa, is I think the Spiked pea gall wasp - unofficially known as the "sputnick" gall to members of the plant gall society.

I think google images has a lot wrongly labelled


(Source - The Study of Plant galls in Norfolk Rex Hancey)
(and the FSC guide seems inadequately labelled too!!)

[Hobjob]

There is a lovely spike pea gall (aka sputnik) in the Gallery

Diplolepis nervosa - Wildlife Photography

[Lancashire Lad]

Originally Posted by Hobjob

I'm voting for Smooth Pea - Diplolepis eglanteriae, a gall wasp, and like most galls specific to one host, the Dog rose in this case.

Diplolepsis nervosa, is I think the Spiked pea gall wasp - unofficially known as the "sputnick" gall to members of the plant gall society.

I think google images has a lot wrongly labelled


(Source - The Study of Plant galls in Norfolk Rex Hancey)
(and the FSC guide seems inadequately labelled too!!)

Hi Hobjob,

My response was based on information from Collins Field Guide to the Insects Of Great Britain and Northern Europe by Michael Chinery.

It states that both the Smooth Pea Gall and the Spiked Pea Gall are produced by the gall wasp Diplolepis nervosa.

Although I think we would be hard pressed to actually differentiate between that and the galls made by D. eglanteriae, without having the actual insect/larvae to study.

Regards
Mike.

[jdoherty]

Thanks everyone for all of the extra information. I take it then that the general consensus is that it is the smooth pea gall.

John