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.
Last gall for Gall Week: blackberry seed gall wasp.
#dslr #nikon #September2025GallWeek #gallweek #diastrophus #diastrophuscuscutaeformis
Oak Flake Gall Wasp, Sep '25
Birch Coulee Battlefield, Renville County, MN, USA
www.inaturalist.org/observations...
#gallweek
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.
Another neat gall: spiny witch hazel gall aphid.
#dslr #nikon #September2025GallWeek #gallweek #hamamelistes #hamamelistesspinosus
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.
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
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.
These galls make neat circles on their host: carbonifera goldenrod gall midge.
#dslr #nikon #September2025GallWeek #gallweek #asteromyia #asteromyiacarbonifera
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.
These galls helps me recognize poison ivy: poison ivy leaf mite.
#dslr #nikon #September2025GallWeek #gallweek #aculops #aculopsrhois
Large, roundish, pale yellowish green gall with many, small purple spots. The host is an oak. Taken in May 2021.
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, 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.
One of my favorite galls: cedar apple rust.
#dslr #nikon #September2025GallWeek #gallweek #gymnosporangium #gymnosporangiumjuniperivirginianae
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
