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Vein Pocket Galls  (Macrodiplosis majalis) on Scarlet Oak (Quercus coccinea) Galls growing on the veins of the underside of an oak leaf. They look kind of disgusting to me...like pustules!<br />
<br />
The Macrodiplosis genus is still not well-described, so it is always possible that this is another species. Visually, it is a match on BugGuide. <br />
<figure class="photo"><a href="https://www.jungledragon.com/image/87283/vein_pocket_galls_macrodiplosis_majalis_on_scarlet_oak_quercus_coccinea.html" title="Vein Pocket Galls  (Macrodiplosis majalis) on Scarlet Oak (Quercus coccinea)"><img src="https://s3.amazonaws.com/media.jungledragon.com/images/3231/87283_thumb.jpg?AWSAccessKeyId=05GMT0V3GWVNE7GGM1R2&Expires=1759968010&Signature=ZoWHnIiFGQgGEdML%2B7dqrS60RSQ%3D" width="200" height="134" alt="Vein Pocket Galls  (Macrodiplosis majalis) on Scarlet Oak (Quercus coccinea) Galls growing on the veins of the underside of an oak leaf. They look kind of disgusting to me...like pustules!<br />
<br />
The Macrodiplosis genus is still not well-described, so it is always possible that this is another species. Visually, it is a match on BugGuide.<br />
https://www.jungledragon.com/image/87284/vein_pocket_galls_macrodiplosis_majalis_on_scarlet_oak_quercus_coccinea.html Fall,Geotagged,Macrodiplosis majalis,United States" /></a></figure> Fall,Geotagged,Macrodiplosis majalis,United States Click/tap to enlarge

Vein Pocket Galls (Macrodiplosis majalis) on Scarlet Oak (Quercus coccinea)

Galls growing on the veins of the underside of an oak leaf. They look kind of disgusting to me...like pustules!

The Macrodiplosis genus is still not well-described, so it is always possible that this is another species. Visually, it is a match on BugGuide.

Vein Pocket Galls  (Macrodiplosis majalis) on Scarlet Oak (Quercus coccinea) Galls growing on the veins of the underside of an oak leaf. They look kind of disgusting to me...like pustules!<br />
<br />
The Macrodiplosis genus is still not well-described, so it is always possible that this is another species. Visually, it is a match on BugGuide.<br />
https://www.jungledragon.com/image/87284/vein_pocket_galls_macrodiplosis_majalis_on_scarlet_oak_quercus_coccinea.html Fall,Geotagged,Macrodiplosis majalis,United States

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''Macrodiplosis majalis'' is a species of gall midges, insects in the family Cecidomyiidae.

Similar species: True Flies
Species identified by Flown Kimmerling
View Flown Kimmerling's profile

By Flown Kimmerling

All rights reserved
Uploaded Dec 4, 2019. Captured Dec 1, 2019 14:08 in 1850 Carters Dam Rd, Chatsworth, GA 30705, USA.
  • Canon EOS 6D Mark II
  • f/20.0
  • 1/25s
  • ISO100
  • 100mm