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Blackberry Knot Gall (Diastrophus nebulosus) Large gall formation on Allegheny Blackberry Stems (Rubus allegheniensis) Blackberry Knot Gall Wasp,Diastrophus nebulosus,Geotagged,Spring,United States Click/tap to enlarge

Blackberry Knot Gall (Diastrophus nebulosus)

Large gall formation on Allegheny Blackberry Stems (Rubus allegheniensis)

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A species of wasp in the Cynipidae family. Induces galls in blackberry stems: "Rounded or long stem swellings, sometimes with 4 or 5 deep longitudinal furrows, length 2 to 6 inches.

Species identified by Flown Kimmerling
View Flown Kimmerling's profile

By Flown Kimmerling

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Uploaded Jun 23, 2021. Captured Jun 20, 2021 11:49 in 227 Oakman Rd NE, Oakman, GA 30732, USA.
  • Canon EOS 6D Mark II
  • f/22.0
  • 1/166s
  • ISO400
  • 100mm