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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 5 months 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 5 months ago

An unusual spotting, indeed, and very interesting. You've definitely done your homework, so perhaps you've already seen this... http://sciencythoughts.blogspot.com/2014...

Leuba Ridgway
Spotted by
Leuba Ridgway

Victoria, Australia

Lat: -37.90, Long: 145.25

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

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