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Casuarina wasp gall

Selitrichodes sp.


These were small wrinkled 5 mm wide balls at the end of stems of a casuarina tree. At least one small branch had several of these with holes ( parasitoid ?). Most were dry but a single fresh green gall on the same branch had a knobbly surface. When dissected the gall showed several thick-walled locules. These look similar to galls seen on C.glauca induced by the gall wasp Selitrichodes.


Spotted on Casuarina (? C.glauca) in a suburban park.


This is an unusual spotting for me. I hope the genus is correct. Thanks to Neil Ross for his input. Missing John La Salle !

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Leuba Ridgway
Leuba Ridgway a year ago

I have not seen that particular article but seen photos of the galls on Casuarina glauca. Thanks for that - I think it has to be Selitrichodes and possibly Selitrichodes casuarinae but as I can't find anything conclusive I'll leave it at the genus level. Thanks again Neil - galls are tricky so it's really good when you have help.

Neil Ross
Neil Ross a year ago

An unusual spotting, indeed, and very interesting. You've definitely done your homework, so perhaps you've already seen this...

Leuba Ridgway
Spotted by
Leuba Ridgway

Victoria, Australia

Spotted on Jan 29, 2019
Submitted on Jan 30, 2019

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