Can anyone help identifying the causal agent?

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Oadi Matny

Hi Mustafa, Yes, it looks like the Eucalyptus wasp galls, see the link below for reference.

https://www.fabinet.up.ac.za/index.php/news-item?id=612

Mustafa A Adhab

Yuko Krzyżaniak Thank you so much for the information.

Mustafa

Oadi Matny Thank you for the link and the response.

Jorge R. Paredes

Thank you so much for the link.

Although the symptoms are slightly different, but I do see similar symptoms around on other leaves.

Appreciate your input.

Thanks Sonia Aghighi

for the answer.

Actually, those warts can not be removed easily.

Abdelkader Tiffrent

it looks like cochineal insect.

Dharmesh KA Davara

gall midge infestated

Thanks Abdelkader Tiffrent

Thanks Dharmesh KA Davara

Hayman Kakakhan Awla

Dear Dr. Mustafa, Greeting.

http://www.onlinepestcontrol.com/what-are-scale-insects/

Regards

Hayman Kakakhan Awla Thanks