SK Galls
@galls-sk.bsky.social
Just starting out learning about galls and leaf miners
Reposted by SK Galls
A blue columbine (Ranunculaceae: Aquilegia coerulea) infested with the larvae of columbine leafminer flies (Diptera: Agromyzidae: Phytomyza miniscula). Blissfield Michigan, 14 Jul 2025.
December 30, 2025 at 4:34 PM
A blue columbine (Ranunculaceae: Aquilegia coerulea) infested with the larvae of columbine leafminer flies (Diptera: Agromyzidae: Phytomyza miniscula). Blissfield Michigan, 14 Jul 2025.
Reposted by SK Galls
This greenbriar leafminer, Marmara smilacisella, adorned its cocoon with clusters of pearlescent bubbles. I wish my holiday decorations were so neat!
December 26, 2025 at 3:46 AM
This greenbriar leafminer, Marmara smilacisella, adorned its cocoon with clusters of pearlescent bubbles. I wish my holiday decorations were so neat!
Reposted by SK Galls
Amazeing artwork by an aspen serpentine leafminer, Phyllocnistis populiella. #moths #bugsky #naturesky
December 13, 2025 at 9:17 PM
Amazeing artwork by an aspen serpentine leafminer, Phyllocnistis populiella. #moths #bugsky #naturesky
Reposted by SK Galls
Gall of the week is caused by a recently discovered species new to Britain, the gall wasp Andricus coriarius f. agamic on oak, Quercus robur.
Discovered and photographed by Maria Fremlin.
Discovered and photographed by Maria Fremlin.
February 5, 2026 at 10:42 AM
Gall of the week is caused by a recently discovered species new to Britain, the gall wasp Andricus coriarius f. agamic on oak, Quercus robur.
Discovered and photographed by Maria Fremlin.
Discovered and photographed by Maria Fremlin.
Reposted by SK Galls
Why are other insects commonly found on oak galls?
The gall wasp not only manipulates the physical growth, but some can manipulate the vascular system to emit a sugary liquid, attracting other insects to feed, and defend, the baby wasp inside. #biodiversity #mutualism
The gall wasp not only manipulates the physical growth, but some can manipulate the vascular system to emit a sugary liquid, attracting other insects to feed, and defend, the baby wasp inside. #biodiversity #mutualism
December 29, 2025 at 4:19 PM
Why are other insects commonly found on oak galls?
The gall wasp not only manipulates the physical growth, but some can manipulate the vascular system to emit a sugary liquid, attracting other insects to feed, and defend, the baby wasp inside. #biodiversity #mutualism
The gall wasp not only manipulates the physical growth, but some can manipulate the vascular system to emit a sugary liquid, attracting other insects to feed, and defend, the baby wasp inside. #biodiversity #mutualism
Reposted by SK Galls
19. Poplar spiral gall in a black poplar leaf stalk.
These are twisty little galls caused by an aphid that induces formation of a short corkscrew of distended leaf stem.
I'm more familiar with wasp galls on oak. So I I thought this aphid gall was very curious.
#SciArt
#ArtAdventCalendar
These are twisty little galls caused by an aphid that induces formation of a short corkscrew of distended leaf stem.
I'm more familiar with wasp galls on oak. So I I thought this aphid gall was very curious.
#SciArt
#ArtAdventCalendar
December 23, 2025 at 8:19 PM
19. Poplar spiral gall in a black poplar leaf stalk.
These are twisty little galls caused by an aphid that induces formation of a short corkscrew of distended leaf stem.
I'm more familiar with wasp galls on oak. So I I thought this aphid gall was very curious.
#SciArt
#ArtAdventCalendar
These are twisty little galls caused by an aphid that induces formation of a short corkscrew of distended leaf stem.
I'm more familiar with wasp galls on oak. So I I thought this aphid gall was very curious.
#SciArt
#ArtAdventCalendar
Reposted by SK Galls
This is oak marble #gall. Sort of 'tumor' of oak buds caused by #wasp Andricus kollari, whose larvae develop within. Hugely important both economically and culturally: source of iron gall ink, standard handwriting ink in Europe from Roman times until century ago! Near Lincoln, Lincolnshire, England.
December 16, 2025 at 4:32 PM
This is oak marble #gall. Sort of 'tumor' of oak buds caused by #wasp Andricus kollari, whose larvae develop within. Hugely important both economically and culturally: source of iron gall ink, standard handwriting ink in Europe from Roman times until century ago! Near Lincoln, Lincolnshire, England.
Reposted by SK Galls
🇧🇷 Two-horned Gall Wasp
🌍 Dryocosmus dubiosus
📝
🔗 Observação: https://www.inaturalist.org/observations/333370655
🌍 Dryocosmus dubiosus
📝
🔗 Observação: https://www.inaturalist.org/observations/333370655
January 4, 2026 at 12:18 PM
🇧🇷 Two-horned Gall Wasp
🌍 Dryocosmus dubiosus
📝
🔗 Observação: https://www.inaturalist.org/observations/333370655
🌍 Dryocosmus dubiosus
📝
🔗 Observação: https://www.inaturalist.org/observations/333370655
Reposted by SK Galls
Reposted by SK Galls
🇧🇷 Beaked Twig Gall Wasp
🌍 Burnettweldia plumbella
📝 On leather oak.
🔗 Observação: https://www.inaturalist.org/observations/335142501
🌍 Burnettweldia plumbella
📝 On leather oak.
🔗 Observação: https://www.inaturalist.org/observations/335142501
January 18, 2026 at 12:18 PM
🇧🇷 Beaked Twig Gall Wasp
🌍 Burnettweldia plumbella
📝 On leather oak.
🔗 Observação: https://www.inaturalist.org/observations/335142501
🌍 Burnettweldia plumbella
📝 On leather oak.
🔗 Observação: https://www.inaturalist.org/observations/335142501
Reposted by SK Galls
Gall of the week is that of the cynipid wasp Aylax papaver on poppies, Papaver spp. An ungalled seedhead is included.
Photo by Peter Shirley
Photo by Peter Shirley
December 10, 2025 at 2:50 PM
Gall of the week is that of the cynipid wasp Aylax papaver on poppies, Papaver spp. An ungalled seedhead is included.
Photo by Peter Shirley
Photo by Peter Shirley
Reposted by SK Galls
Gall Wasp larvae on Oak leaf.
September 21, 2025 at 5:17 PM
Gall Wasp larvae on Oak leaf.
Reposted by SK Galls
What do you think we've found here – a weird fungus perhaps? Nature's early Christmas baubles? 👀
These colourful beauties are actually cherry wasp 'galls' – growths on the leaves caused by cherry gall wasp larvae! 🐝
Have you ever seen a wasp gall before? Let us know down below! 👇
#Cumbria
These colourful beauties are actually cherry wasp 'galls' – growths on the leaves caused by cherry gall wasp larvae! 🐝
Have you ever seen a wasp gall before? Let us know down below! 👇
#Cumbria
November 15, 2025 at 6:59 AM
What do you think we've found here – a weird fungus perhaps? Nature's early Christmas baubles? 👀
These colourful beauties are actually cherry wasp 'galls' – growths on the leaves caused by cherry gall wasp larvae! 🐝
Have you ever seen a wasp gall before? Let us know down below! 👇
#Cumbria
These colourful beauties are actually cherry wasp 'galls' – growths on the leaves caused by cherry gall wasp larvae! 🐝
Have you ever seen a wasp gall before? Let us know down below! 👇
#Cumbria
Reposted by SK Galls
Last gall for Gall Week: blackberry seed gall wasp.
#dslr #nikon #September2025GallWeek #gallweek #diastrophus #diastrophuscuscutaeformis
#dslr #nikon #September2025GallWeek #gallweek #diastrophus #diastrophuscuscutaeformis
September 14, 2025 at 6:55 PM
Last gall for Gall Week: blackberry seed gall wasp.
#dslr #nikon #September2025GallWeek #gallweek #diastrophus #diastrophuscuscutaeformis
#dslr #nikon #September2025GallWeek #gallweek #diastrophus #diastrophuscuscutaeformis
Reposted by SK Galls
Silk Button Gall Wasp (Neuroterus numismalis)
A gall wasp that has two generations per year. Seems to be having a great year here with one oaks branches bending under the weight
The agamic generation causes Silk Buttons on the underside of Oak leaves
#gall #galls #wasps #hymenopters #silkbuttongall
A gall wasp that has two generations per year. Seems to be having a great year here with one oaks branches bending under the weight
The agamic generation causes Silk Buttons on the underside of Oak leaves
#gall #galls #wasps #hymenopters #silkbuttongall
September 29, 2025 at 7:57 PM
Silk Button Gall Wasp (Neuroterus numismalis)
A gall wasp that has two generations per year. Seems to be having a great year here with one oaks branches bending under the weight
The agamic generation causes Silk Buttons on the underside of Oak leaves
#gall #galls #wasps #hymenopters #silkbuttongall
A gall wasp that has two generations per year. Seems to be having a great year here with one oaks branches bending under the weight
The agamic generation causes Silk Buttons on the underside of Oak leaves
#gall #galls #wasps #hymenopters #silkbuttongall
Reposted by SK Galls
Spangles! These very cool common spangle galls were on a large number of the fallen oak leaves we saw beside Loch Lomond last week. Produced by the common spangle gall wasp, each houses a tiny larvae that will emerge in spring
I flippin' love galls
#galls
I flippin' love galls
#galls
November 9, 2025 at 5:12 PM
Spangles! These very cool common spangle galls were on a large number of the fallen oak leaves we saw beside Loch Lomond last week. Produced by the common spangle gall wasp, each houses a tiny larvae that will emerge in spring
I flippin' love galls
#galls
I flippin' love galls
#galls
Reposted by SK Galls
Macros of three tiny #galls on Valley Oaks (Quercus lobata) this week on Sonoma Mtn. 💚
Disc Gall Wasp - Yellow Wig Gall Wasp - Red Cone Gall Wasp
#MacroMonday #Insects #Inverts #Trees #NaturePhotos #iNat #NativePlants #CaliforniaNativePlants 📷🌱
Disc Gall Wasp - Yellow Wig Gall Wasp - Red Cone Gall Wasp
#MacroMonday #Insects #Inverts #Trees #NaturePhotos #iNat #NativePlants #CaliforniaNativePlants 📷🌱
September 29, 2025 at 9:04 PM
Macros of three tiny #galls on Valley Oaks (Quercus lobata) this week on Sonoma Mtn. 💚
Disc Gall Wasp - Yellow Wig Gall Wasp - Red Cone Gall Wasp
#MacroMonday #Insects #Inverts #Trees #NaturePhotos #iNat #NativePlants #CaliforniaNativePlants 📷🌱
Disc Gall Wasp - Yellow Wig Gall Wasp - Red Cone Gall Wasp
#MacroMonday #Insects #Inverts #Trees #NaturePhotos #iNat #NativePlants #CaliforniaNativePlants 📷🌱
Reposted by SK Galls
Gall of a #RedConeGallWasp, underside of a leaf of #ValleyOak
#insects #galls #insectgalls
#oak #oaks #oaktree #oaktrees
#Nikon #NikonPhotography
#macrophotography
#insectphotography
#insects #galls #insectgalls
#oak #oaks #oaktree #oaktrees
#Nikon #NikonPhotography
#macrophotography
#insectphotography
September 27, 2025 at 4:53 PM
Gall of a #RedConeGallWasp, underside of a leaf of #ValleyOak
#insects #galls #insectgalls
#oak #oaks #oaktree #oaktrees
#Nikon #NikonPhotography
#macrophotography
#insectphotography
#insects #galls #insectgalls
#oak #oaks #oaktree #oaktrees
#Nikon #NikonPhotography
#macrophotography
#insectphotography
Reposted by SK Galls
Artichoke galls are caused by a gall wasp laying an egg on an oak bud. Have you spotted one recently? 👀
October 6, 2025 at 5:15 PM
Artichoke galls are caused by a gall wasp laying an egg on an oak bud. Have you spotted one recently? 👀
Reposted by SK Galls
Probably the prettiest gall I've seen so far (at least, to me): larger empty oak apple wasp.
#dslr #nikon #September2025GallWeek #gallweek #amphibolips #amphibolipsquercusinanis
#dslr #nikon #September2025GallWeek #gallweek #amphibolips #amphibolipsquercusinanis
September 9, 2025 at 7:28 PM
Probably the prettiest gall I've seen so far (at least, to me): larger empty oak apple wasp.
#dslr #nikon #September2025GallWeek #gallweek #amphibolips #amphibolipsquercusinanis
#dslr #nikon #September2025GallWeek #gallweek #amphibolips #amphibolipsquercusinanis
Reposted by SK Galls
An old Hop Gall on this Oak caused by the asexual generation of the gall wasp Andricus foecundatrix. I expect the inner gall fell out in the summer and a wasp of the sexual generation will emerge from that next Spring.
#WildwebsWednesday
#galls
#WildwebsWednesday
#galls
November 12, 2025 at 1:33 PM
An old Hop Gall on this Oak caused by the asexual generation of the gall wasp Andricus foecundatrix. I expect the inner gall fell out in the summer and a wasp of the sexual generation will emerge from that next Spring.
#WildwebsWednesday
#galls
#WildwebsWednesday
#galls
Reposted by SK Galls
This morning I went on a quick walk to Catton Park to see a scarce gall on a young Oak tree caused by the agamic (asexual) generation of the gall wasp Andricus lucidus. It had been found there recently by @susanweeks.bsky.social . This gall has lots of uniformly thin 'spines' with rounded tips.
September 13, 2025 at 8:19 PM
This morning I went on a quick walk to Catton Park to see a scarce gall on a young Oak tree caused by the agamic (asexual) generation of the gall wasp Andricus lucidus. It had been found there recently by @susanweeks.bsky.social . This gall has lots of uniformly thin 'spines' with rounded tips.
Reposted by SK Galls
#CoastLiveOak Two-horned #GallWasp
#Fossils of #insectgalls on leaves 100-million years ago.
Must have been stable LONG before that to be abundant enough for fossilization
#California #environment
#insects
#oak #oaks #oaktree #oaktrees
#Nikon #NikonPhotography
#macrophotography
#insectphotography
#Fossils of #insectgalls on leaves 100-million years ago.
Must have been stable LONG before that to be abundant enough for fossilization
#California #environment
#insects
#oak #oaks #oaktree #oaktrees
#Nikon #NikonPhotography
#macrophotography
#insectphotography
November 12, 2025 at 4:35 PM
#CoastLiveOak Two-horned #GallWasp
#Fossils of #insectgalls on leaves 100-million years ago.
Must have been stable LONG before that to be abundant enough for fossilization
#California #environment
#insects
#oak #oaks #oaktree #oaktrees
#Nikon #NikonPhotography
#macrophotography
#insectphotography
#Fossils of #insectgalls on leaves 100-million years ago.
Must have been stable LONG before that to be abundant enough for fossilization
#California #environment
#insects
#oak #oaks #oaktree #oaktrees
#Nikon #NikonPhotography
#macrophotography
#insectphotography
Reposted by SK Galls
Oak Flake Gall Wasp, Sep '25
Birch Coulee Battlefield, Renville County, MN, USA
www.inaturalist.org/observations...
#gallweek
Birch Coulee Battlefield, Renville County, MN, USA
www.inaturalist.org/observations...
#gallweek
September 13, 2025 at 7:54 PM
Oak Flake Gall Wasp, Sep '25
Birch Coulee Battlefield, Renville County, MN, USA
www.inaturalist.org/observations...
#gallweek
Birch Coulee Battlefield, Renville County, MN, USA
www.inaturalist.org/observations...
#gallweek