Galling,
@galling.bsky.social
The British Plant Gall Society Bluesky feed. See also our X feed @britgalls, our Facebbok site, British Plant Galls (in association with BPGS), and our website britishplantgallsociety.org
Gall of the week is caused by the gall midge Iteomyia capreae on willows, Salix spp.
Photographer Peter Shirley.
Photographer Peter Shirley.
November 27, 2025 at 9:42 AM
Gall of the week is caused by the gall midge Iteomyia capreae on willows, Salix spp.
Photographer Peter Shirley.
Photographer Peter Shirley.
Gall of the week is that of the sawfly Blennocampa phyllocolpa on roses Rosa spp.
Photo by Tom Higginbottom on Bladmineerders.nl
Photo by Tom Higginbottom on Bladmineerders.nl
November 20, 2025 at 10:13 AM
Gall of the week is that of the sawfly Blennocampa phyllocolpa on roses Rosa spp.
Photo by Tom Higginbottom on Bladmineerders.nl
Photo by Tom Higginbottom on Bladmineerders.nl
Gall of the week is the nail gall of the mite Eriophyes tiliae on lime trees Tilia spp.
Photo by Mike Poulton.
Photo by Mike Poulton.
November 13, 2025 at 10:52 AM
Gall of the week is the nail gall of the mite Eriophyes tiliae on lime trees Tilia spp.
Photo by Mike Poulton.
Photo by Mike Poulton.
Gall of the week, usually found in leaf axil buds, is caused by the cynipid Andricus glandulae f. agamic. On oaks, Quercus spp.
Photo by Peter Shirley
Photo by Peter Shirley
November 6, 2025 at 10:01 AM
Gall of the week, usually found in leaf axil buds, is caused by the cynipid Andricus glandulae f. agamic. On oaks, Quercus spp.
Photo by Peter Shirley
Photo by Peter Shirley
Gall of the week is that of the curiously two-chambered one of the cynipid wasp Cynips disticha f. agamic on oaks, Quercus spp.
Photos by Malcolm Storey.
Photos by Malcolm Storey.
October 30, 2025 at 8:45 AM
Gall of the week is that of the curiously two-chambered one of the cynipid wasp Cynips disticha f. agamic on oaks, Quercus spp.
Photos by Malcolm Storey.
Photos by Malcolm Storey.
Gall of the week is caused by the fungus Taphrina tosquinetii on alder, Alnus glutinosa.
Photographer unknown.
Photographer unknown.
October 23, 2025 at 9:03 AM
Gall of the week is caused by the fungus Taphrina tosquinetii on alder, Alnus glutinosa.
Photographer unknown.
Photographer unknown.
Still in Ohio, gall of the week is a leaf gall on white swamp oak, Quercus bicolor. Seems to be Neuroterus quercusverrucarum, the oak flake gall. Is this correct @gallformers?
Photo by Peter Shirley.
Photo by Peter Shirley.
October 15, 2025 at 1:27 PM
Still in Ohio, gall of the week is a leaf gall on white swamp oak, Quercus bicolor. Seems to be Neuroterus quercusverrucarum, the oak flake gall. Is this correct @gallformers?
Photo by Peter Shirley.
Photo by Peter Shirley.
Gall of the week: Galling is in Ohio USA, and came across this. Seems to be a rough oak bulletgall caused by the cynipid wasp Disholcaspis quercusmamma on swamp white oak, Quercus bicolor. Happy to be corrected.
Photo by Peter Shirley.
Photo by Peter Shirley.
October 9, 2025 at 2:16 PM
Gall of the week: Galling is in Ohio USA, and came across this. Seems to be a rough oak bulletgall caused by the cynipid wasp Disholcaspis quercusmamma on swamp white oak, Quercus bicolor. Happy to be corrected.
Photo by Peter Shirley.
Photo by Peter Shirley.
Gall of the week is that of the cynipid wasp Aulacidea follioti on prickly sow thistle. Sonchus asper.
Photos by Jean-Yves Baugnee from Plant Parasites of Europe Bladmineeders.nl
Photos by Jean-Yves Baugnee from Plant Parasites of Europe Bladmineeders.nl
October 1, 2025 at 8:46 AM
Gall of the week is that of the cynipid wasp Aulacidea follioti on prickly sow thistle. Sonchus asper.
Photos by Jean-Yves Baugnee from Plant Parasites of Europe Bladmineeders.nl
Photos by Jean-Yves Baugnee from Plant Parasites of Europe Bladmineeders.nl
Members of the BPGS enjoying our annual gall weekend in Yorkshire last Saturday and Sunday.
September 29, 2025 at 5:32 PM
Members of the BPGS enjoying our annual gall weekend in Yorkshire last Saturday and Sunday.
Gall of the week is caused by a moth, Mompha sturnipennella on rosebay willowherb, Chamerion angustifolia.
Gall photo by Tom Higginbottom, causer photo unknown, taken from the British Plant Gall Society website: www.britishplantgallsociety.org
Gall photo by Tom Higginbottom, causer photo unknown, taken from the British Plant Gall Society website: www.britishplantgallsociety.org
September 25, 2025 at 8:43 AM
Gall of the week is caused by a moth, Mompha sturnipennella on rosebay willowherb, Chamerion angustifolia.
Gall photo by Tom Higginbottom, causer photo unknown, taken from the British Plant Gall Society website: www.britishplantgallsociety.org
Gall photo by Tom Higginbottom, causer photo unknown, taken from the British Plant Gall Society website: www.britishplantgallsociety.org
Just discovered a rare newspaper article on a gall - that of Diplolepis rosae, robin's pin-cushion. It’s the Guardian's Country Diary today, by Kate Blincoe. Find it at theguardian.com
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September 22, 2025 at 8:12 AM
Just discovered a rare newspaper article on a gall - that of Diplolepis rosae, robin's pin-cushion. It’s the Guardian's Country Diary today, by Kate Blincoe. Find it at theguardian.com
Gall of the week is caused by a gall midge, Dasineura hyperici on Hypericum spp. St. John's- Wort.
Photographer not known.
Photographer not known.
September 18, 2025 at 8:30 AM
Gall of the week is caused by a gall midge, Dasineura hyperici on Hypericum spp. St. John's- Wort.
Photographer not known.
Photographer not known.
Gall of the week is the little gem caused by the cynipid Neuroterus anthracinus f. agamic on oaks Quercus spp. For some strange reason known as the oyster gall.
Photographer unknown.
Photographer unknown.
September 11, 2025 at 8:45 AM
Gall of the week is the little gem caused by the cynipid Neuroterus anthracinus f. agamic on oaks Quercus spp. For some strange reason known as the oyster gall.
Photographer unknown.
Photographer unknown.
Don't forget folks iNaturalist's Gall Week is coming up - it's from the 6th to 14th of this month.
September 4, 2025 at 9:36 AM
Don't forget folks iNaturalist's Gall Week is coming up - it's from the 6th to 14th of this month.
Gall of the week, maybe gall of the year it seems to be super-abundant just now, is that of the cynipid wasp Neuroterus numismalis f. agamic on oaks Quercus spp.
Photo by Peter Shirley.
Photo by Peter Shirley.
September 4, 2025 at 9:32 AM
Gall of the week, maybe gall of the year it seems to be super-abundant just now, is that of the cynipid wasp Neuroterus numismalis f. agamic on oaks Quercus spp.
Photo by Peter Shirley.
Photo by Peter Shirley.
Gall of (last) week which somehow disappeared into the great digital universe in the sky, is caused by the cynipid wasp Trigonaspis f. agamic on oaks Quercus spp.
Photo by Peter Shirley.
Photo by Peter Shirley.
September 3, 2025 at 7:57 AM
Gall of (last) week which somehow disappeared into the great digital universe in the sky, is caused by the cynipid wasp Trigonaspis f. agamic on oaks Quercus spp.
Photo by Peter Shirley.
Photo by Peter Shirley.
Gall of the week, one that maybe needs a bit of searching for, is a caused by avgall midge, Asphondylia ononidis, on restharrow, Ononis repans.
Photos by Sue Timms.
Photos by Sue Timms.
August 21, 2025 at 3:34 PM
Gall of the week, one that maybe needs a bit of searching for, is a caused by avgall midge, Asphondylia ononidis, on restharrow, Ononis repans.
Photos by Sue Timms.
Photos by Sue Timms.
Gall of the week is that caused by the aphid Hayhurstia atriplicis on oraches Atriplex spp.
Photo by Roelef Jan Koops.
Photo by Roelef Jan Koops.
August 14, 2025 at 9:10 AM
Gall of the week is that caused by the aphid Hayhurstia atriplicis on oraches Atriplex spp.
Photo by Roelef Jan Koops.
Photo by Roelef Jan Koops.
Gall of the week is the fungal gall of Claviceps purpurea otherwise known as ergot, on many grasses and cereals. It is the cause of St. Anthony's fire mania if consumed in contaminated flour.
Photographer unknown.
Photographer unknown.
August 7, 2025 at 8:29 AM
Gall of the week is the fungal gall of Claviceps purpurea otherwise known as ergot, on many grasses and cereals. It is the cause of St. Anthony's fire mania if consumed in contaminated flour.
Photographer unknown.
Photographer unknown.
Gall of the week is a bit of a mystery. It occurs on tree-fuschia, Halleria lucida, in South Africa, I suspect it is caused by a cynipid wasp, Halleriaphagus phagolucida, but does anyone know different?
Photo by Peter Shirley
Photo by Peter Shirley
July 31, 2025 at 9:20 AM
Gall of the week is a bit of a mystery. It occurs on tree-fuschia, Halleria lucida, in South Africa, I suspect it is caused by a cynipid wasp, Halleriaphagus phagolucida, but does anyone know different?
Photo by Peter Shirley
Photo by Peter Shirley
Gall of the week, well two actually. A chimera with the cynipid galls of Andricus kollari/infectorius f. agamic agg and A. aries f. agamic growing in close proximity on oak Quercus spp.
Photographer unknown.
Photographer unknown.
July 26, 2025 at 8:35 AM
Gall of the week, well two actually. A chimera with the cynipid galls of Andricus kollari/infectorius f. agamic agg and A. aries f. agamic growing in close proximity on oak Quercus spp.
Photographer unknown.
Photographer unknown.
Have been catching up with verifying cynipid galls on iNaturalist. The process can be greatly speeded up if you can remember to add the generation to the name. For example Biorhiza pallida f. sexual for the oak apple gall causer, and Andricus aries f. agamic for the ramshorn gall causers.
July 21, 2025 at 3:54 PM
Have been catching up with verifying cynipid galls on iNaturalist. The process can be greatly speeded up if you can remember to add the generation to the name. For example Biorhiza pallida f. sexual for the oak apple gall causer, and Andricus aries f. agamic for the ramshorn gall causers.
Gall of the week is a fungal gall which at first sight might be taken for an invertebrate gall, although the there is a larger protuberance on the underside of the leaf. It is caused by Exobasidium vaccinii on cowberry, Vaccinium vitis-idaea.
Photo by Mike Poulton.
Photo by Mike Poulton.
July 17, 2025 at 8:39 AM
Gall of the week is a fungal gall which at first sight might be taken for an invertebrate gall, although the there is a larger protuberance on the underside of the leaf. It is caused by Exobasidium vaccinii on cowberry, Vaccinium vitis-idaea.
Photo by Mike Poulton.
Photo by Mike Poulton.