#GallWeek
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ramzsullivan.bsky.social
We have the #gall week shirt design up. Feel free to jump on the order if you participated or like the design by Chelsea at www.wildlight-studio.com.

Order: www.customink.com/g/ygr0-00d3-...

#gallweek #entomology #wasp #botany #ecology
A white tee-shirt featuring a colorless gambel oak leaf and 10 galls with GallWeek26 written on the leaf.
September 13, 2026 at 11:45 PM
amagpiesnest.bsky.social
Oak Flake Gall Wasp, Sep '25
Birch Coulee Battlefield, Renville County, MN, USA
www.inaturalist.org/observations...
#gallweek
September 13, 2025 at 7:54 PM
jannalayton.bsky.social
Gall Week September 2026 has concluded. My favorite image I got was this one of a parasitic Torymus wasp ovipositing in the galls of a Feron crystallinum wasp. Her babies will have F. crystallinum larva to snack on and cozy galls to grow up in!

#gallweek #gallsky #insects
A female Torymus wasp, black-bronze with reddish eyes, laying eggs in a hall covered in white and pink hairs.
September 15, 2026 at 2:16 AM
iamowls.bsky.social
One of my favorite galls: cedar apple rust.

#dslr #nikon #September2025GallWeek #gallweek #gymnosporangium #gymnosporangiumjuniperivirginianae
Large, brown gall with orange gelatinous tendrils. A few of the tendrils at the bottom are dried up. The host is a conifer/juniper/arborvitae. Taken in March 2020. Large, brown gall with orange, drooping gelatinous tendrils. The host is a conifer/juniper/arborvitae. Everything is wet. Taken in May 2022.
September 8, 2025 at 6:30 PM
iamowls.bsky.social
Probably the prettiest gall I've seen so far (at least, to me): larger empty oak apple wasp.

#dslr #nikon #September2025GallWeek #gallweek #amphibolips #amphibolipsquercusinanis
Large, roundish, pale yellowish green gall with many, small purple spots. The host is an oak. Taken in May 2021.
September 9, 2025 at 7:28 PM
iamowls.bsky.social
Another neat gall: spiny witch hazel gall aphid.

#dslr #nikon #September2025GallWeek #gallweek #hamamelistes #hamamelistesspinosus
Roundish, yellowish green gall covered in conical spines. The host is common witch hazel. Taken in October 2021. Roundish, yellowish green galls covered in sometimes curved, conical spines. The host is common witch hazel. Taken in October 2021.
September 13, 2025 at 1:08 PM
iamowls.bsky.social
Last gall for Gall Week: blackberry seed gall wasp.

#dslr #nikon #September2025GallWeek #gallweek #diastrophus #diastrophuscuscutaeformis
Many roundish, reddish purple galls covered in bristley spines that are clustered together. Most of the galls have a hole. The host is unknown, probably a rubus. Taken in March 2021.
September 14, 2025 at 6:55 PM
jannalayton.bsky.social
It’s Gall Week September 2026! I saw these pretty Live Oak Bud Galls on Coast Live Oak today. Inside of these, tiny wasp larvae (Callirhytis quercusagrifoliae) are developing.

#gallsky #oakgalls #gallweek
Two spherical plant galls, one green-tan and one green, on a coast live oak Spherical plant gall, light green with yellow speckles, on coast live oak
September 9, 2026 at 2:57 AM
iamowls.bsky.social
3 other galls that are commonly found on goldenrod: goldenrod bunch gall midge, giant goldenrod bunch gall midge, and goldenrod brussels sprout gall fly.

#dslr #nikon #September2025GallWeek #gallweek #rhopalomyia #rhopalomyiasolidaginis #rhopalomyiacapitata #procecidochares #procecidocharesatra
Goldenrod bunch gall midge: bunched/rosette gall made from leaves. The host is goldenrod. Taken in September 2020. Giant goldenrod bunch gall midge: bunched/rosette gall made from many leaves. The host is goldenrod. Taken in July 2021. Goldenrod brussels sprout gall fly: bunched/rosette gall made from leaves. The host is goldenrod. Taken in September 2020.
September 12, 2025 at 9:33 PM
botanylicious.bsky.social
Happy Gall Week! This week's Substack post highlights plant galls and a community science event happening right now!
Cover photo is a red oak leaf covered in bumpy galls.

#CNF #NatureWriting #iNaturalist #GallWeek #CommunityScience #CitizenScience #BugSky
Leaf Spots and Muppet Fluff
An introduction to plant galls and a call to join a community science event
sarahekelsey.substack.com
September 9, 2026 at 10:59 AM
iamowls.bsky.social
These galls helps me recognize poison ivy: poison ivy leaf mite.

#dslr #nikon #September2025GallWeek #gallweek #aculops #aculopsrhois
Many small, pink and green bumpy and roundish galls. The host is poison ivy. Taken in July 2022. Many small, pink bumpy and roundish galls. The host is poison ivy. Taken in June 2022. Many small, pink and green bumpy and roundish galls. The left leaf is almost completely covered in galls. The host is poison ivy. Taken in June 2022. Many small, pink and green bumpy and roundish galls. The host is poison ivy. Taken in June 2022.
September 10, 2025 at 6:20 PM
iamowls.bsky.social
These galls make neat circles on their host: carbonifera goldenrod gall midge.

#dslr #nikon #September2025GallWeek #gallweek #asteromyia #asteromyiacarbonifera
Flat, circular, white galls with a thin navy blueish ring near the edge. The host is goldenrod. Taken in September 2022. 4 flat, circular, whiteish galls with a thick blue purple ring near the edge and a blue purple center. The host is goldenrod. There is a thick, yellowish green ring around the galls. Taken in July 2022. Flat, circular, white galls with a thin navy blueish ring near the edge and a navy blueish center. The host is goldenrod. Taken in September 2021.
September 11, 2025 at 5:04 PM
weirdmustard.flipping.rocks.ap.brid.gy
Ich hab heute 3 verschiedene Gallen an einer einzelnen Eiche gefunden. Eichen sind echt der Wahnsinn, was das angeht. Es ist noch #gallweek auf #inaturalist, von daher ist das sehr wichtig, da ordentlich nachzugucken.
Eine Galle die aussieht wie ein Zapfen, so aufgefächert und unten am Zweig hängend Eine rot-weiß gestreifte runde Galle zwischen Eichenblättern Eine klassische rot-gelbe kugelrunde Galle
September 11, 2026 at 7:21 PM
stanfordjrbp.bsky.social
Last Saturday, Jasper Ridge docents organized a #ContinuingEducation hike during #GallWeek and found very interesting #galls! To see these and more observations visit their @inaturalist project page:
https://t.co/50WTdP62gf https://t.co/5HD9wDIYbs
Observations
iNaturalist is a social network for naturalists! Record your observations of plants and animals, share them with friends and researchers, and learn about the natural world.
www.inaturalist.org
January 16, 2025 at 5:24 PM