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Public
SK53

Some more Wollaton Park galls for @fowp a short 🧵

On Bracken :

* Little Black Puddings Dasineura pteridis (=filicina), swollen rolled and blackened pinnule (from previous years)
* Chirosia grossicauda, curled up end of pinna
* Aceria preridis : curled up and abnormally hairy ends of pinna (first time I've ever seen it)

Bonus pot Beetle Cryptocephalus sp. too

A small (3 mm) beetle, predominantly yellow and yellowish-orange scrambles over a green Bracken frond.
The end of a pinna (part of a Bracken frond) tightly curled over and partly browned. A gall caused by the fly Chirosia grossicauda.
The end pinna of a Bracken frond changed into a hairy mass. The gall is caused by a mite Aceria pteridis. Probably relatively uncommon.
The gall known as Little Blabk Puddings on Bracken. This is a top view so the likeness is not do apparent. Two pinnules (smallest repeating part of a Bracken frond) are tightly rolled by a small midge larva of Dasineura pteridis. From below the pinnules are blackened and thickened.
#PlantGalls#NottinghamWildlife
Public
SK53

On the Turkey Oak on Arbour Hill:

* Andricus grossulariae. Old catkin galls from the Spring. Causer is a gall wasp.
* Aceria cerrea : a bulge in the leaf with a corresponding hairy patch beneath, caused by a mite, Aceria cerrea.

@fowp

A cluster of brown, almost globular, galls on a Turkey Oak twig.
A Turkey Oak leaf with a number of bulges. The bulges are abnormally hairy underneath. Caused by Aceria cerrea, a mite.
Public
SK53

On the Arbour Oak

* Ram's-horn gall (Andricus aries)
* Oyster gall (Neuroterus anthracina)
* Common Spangle gall (Neuroterus quercusbaccharum)

@fowp

A small globular gall attached to the midrib on the underside of an Oak leaf
Oak buds swollen and extended caused by the gall wasp Andricus aries.
Common Spangle Galls on the underside of an Oak leaf. The gallsbare reddish brown hairy discs.
SK53

Lastly a few others

* Cola-nut gall from Arbour Hill
* Aceria tenella on the Hornbeam next to Beeston Lodge. A series of small blisters along the midrib.
* Acalitus brevitarsus on an Alder by the lake
*Vasates quadripes on Silver Maple near the Hall.

Of these at least 3 are ones I've not seen in the Park before. There's potentially over 100 species of galls to be found, but the deer browse line doesn't help.

@fowp

A brown globular gall with a rough uneven surface on an Oak bud
The underside of an Alder leaf showing many abnormally reddish-brown hairy patches caused by the gall mite Acalitus brevitarsus
A Solver Maple leaf, recognisable because of the deep sinuses between the lobes, with numerous small raised bladder-like galls protruding from it's upper surface.
The base of a Hornbeam leaf showing three pairs of bumps adjacent to the midrib. These are galls caused by a mite Aceria tenella.
Sep 17, 2024, 07:46 AM·Public
0boosts·1favorite
Public
SK53

@fowp Frustrated to not get in the Hall gardens again, but was able to add a few more galls. Aceria ilicis on Holm Oak leaves accessible from outside. Also on Beech Hartigiola annulipes and Aceria nervisequa. On Alder, by the lake, the vein gall Eriophyes inangualis.

Little patches of chestnut brown hairs, caused by the gall mite Aceria ilicis, on the underside of a Holm Oak leaf. The leaf is a pale grey-green.
The upperside of an Alder leaf showing prominent pairs of bumps either side of the midrib (caused by a gall mite Eriophyes inangualis). Other bumps on the leaf are caused by a different mite.
A Beech leaf with raised bumps, caused by the gall mite Aceria nervisequa.
A Beech leaf with prominent yellow-red hairy projections, about 3-4 mm tall, mainly close to the midrib. These are falls of the midge Hartigiola annulipes.
Public
Friends of Wollaton Park

@SK53 Thanks. The gardens were closed for 5-6 weeks for tree maintenance. They have now re-opened.

Public
SK53

@fowp Thanks. Last timemit was a private event. I'll try & make another visit before leaf fall. The Oaks should be while yet.

Public
Colin Robbins

@SK53 Ha Ha - the "private event" sign was the only one they had available. The "private event" was tree surgeons in the garden!
I've updated the tree map with notes on what was done.

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