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The galls are not those of males of Apiomorpha karschi, which are much smaller than those of A. strombylosa and a bit different in shape. Relative to the mid-vein of the leaves in the photos, the galls are far too big to be those of A. karschi.
Christiane, have a look at the following links -I think you have male Apiomorpha galls but A.karschi and not A.strombylosa. I wouldn't dare argue with l.cook (a Gall expert) but this might have been a simple mistake-
http://agspsrv34.agric.wa.gov.au/Ento/ic...
http://agspsrv34.agric.wa.gov.au/Ento/im...
In fact I learned about Gall from Juan and Jonathan's some spotting on Project Noah. Then keep observing similar Galls during my trekking programs. So I mentioned my observation what I learned about Gall. In India Cluster fig tree (Ficus racemosa) is famous for Galls in its fruits and leafs.
Gall is fact Pupa like hutment of a small creature...as protective habitat from predators. Its colour also made in attractive to get rid off predators. In Galls such creatures live till transformation stage like a Pupa of butterfly.
These are galls...!!
No sign of Fungi...Never seen Fungi on green leaf..!!
Thanks .. Great to learn something new. like GALLS http://en.wikipedia.org/wiki/File:Eucaly... ..
Galls are usually caused by an irritant, like an insect depositing it's eggs.
http://en.wikipedia.org/wiki/Gall Galls take on many different shapes--I've seen something similar to these on leaves before.