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Antistrophus microseris gall dissections. Galls are on Microseris douglasii.

** Click on any photo to enlarge it. **

IMAGE #1
Antistrophus microseris gall on Microseris douglasii, still fresh and green in the field. April 27, 2022.

IMAGE #2
This gall was collected May 2, 2021, and cut open in mid-April 2022. Apparently the wasps were not going to emerge on their own. Perhaps the gall got too dried out and the wasps weren't able to emerge. However, this gall contained four live wasps -- and also one dried up dead one.

IMAGE #3
Female (dissected out of gall).

IMAGE #4
Female (dissected out of gall).

IMAGE #5
Male (dissected out of gall). Note longer, darker antennae and smaller abdomen than female.

IMAGE #6
Male (dissected out of gall).

IMAGE #7
The dark dividers between the wasps are visible here. Two wasps have been removed. The leg of a third wasp is visible on the right. Gall collected May 2, 2021 and cut open mid-April 2022.

IMAGE #8
Two now-empty cells and one cell with wasp still inside. Note the dark dividers between the cells. Gall collected May 2, 2021 and cut open mid-April 2022.

IMAGE #9
Dividers between cells after wasps have been removed. Gall collected May 2, 2021 and cut open mid-April 2022.

IMAGE #10
Closer up view of the dividers between cells, after wasps have been removed. Gall collected May 2, 2021 and cut open mid-April 2022.
IMAGE #11 Another gall collected May 2, 2021 and cut open mid-April 2022. Three cells are visible here. There's a wasp in the middle cell. The wasps from the left and right cells have been removed.


IMAGE #12
Gall collected April 27, 2022, and cut open on the same day. This gall is still very green. Images #12, #13, and #14 are of the same gall.

IMAGE #13
Gall collected April 27, 2022, and cut open on the same day. This very green gall had what seems to be two cynipid (presumably inducer) larvae but no dividers between them. Is it possible the larvae don't build the dividers until they're nearly ready to pupate? In the main cell with the two larvae, at ~1pm there is what may be the beginning construction of a divider. This is the same gall as in images #12 and #14.

IMAGE #14
Gall collected April 27, 2022, and cut open on the same day. Same gall and larvae as in images #12 and #13.

IMAGE #15
Another gall collected April 27, 2022, and cut open on the same day. This gall was not quite as green as the gall in images #12, #13, and #14. Images #15, #16, #17, and #18 are of the same gall.

IMAGE #16
The gall contained four larvae that are more orange than the larvae in images #12, #13, and #14. There are also dividers between the larvae, but the dividers aren't as dark as those in the older galls in images #7, #8, #9, #10, and #11.

IMAGE #17
All four larvae visible.

IMAGE #18
Another view of the gall in images #15, #16, and #17.

IMAGE #19
Comparison of larvae from gall in images #12, #13, and #14 with larvae from gall in images #15, #16, #17, and #18.

IMAGE #20
Gall collected April 27, 2022. Cut open on May 8, 2022. Images #20, #21, #22, and #23 are of the same gall.

IMAGE #21
The first larva.

IMAGE #22
First larva removed; second larva visible. The divider between them is very fine work!

IMAGE #23
Stained glass dividers!

IMAGE #24
Gall collected April 27, 2022. Cut open on May 8, 2022. This gall contained two larvae but they were in completely separate cells. Note that they still created the darker dividers even though there's so much plant material between the two cells.

IMAGE #25
Parasitoid wasp larva dissected out of gall in mid-April, 2022, from gall collected May 2, 2021.

IMAGE #26
Parasitoid wasp reared from gall collected April 27, 2022. Photo taken May 22, 2022.

IMAGE #27
Parasitoid wasps reared from galls collected May 23, 2022. Photo taken July 12, 2022.

IMAGE #28
Gall collected May 23, 2022, and dissected on July 12, 2022. Photo taken July 12, 2022.
This gall contained one large chamber with dividers creating 5 spaces for larvae.
There were 3 larvae, all alive. The other 2 spaces were empty.
The arrow points to an exit hole (that comes out on the side of the gall not visible in this image) presumably used by one or two parasitoids that emerged from the gall.

IMAGE #29
Larvae dissected from gall in Image #28, collected May 23, 2022 and dissected on July 12, 2022. Photo taken July 12, 2022.