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Eutrichosomatid wasp

Family Pteromalidae


This tiny wasp (about 2.5mm long) appeared on these fresh leaf beetle eggs within a minute of them being laid.


On eucalyptus leaves in a local nature reserve.


[ Beetles Paropsisterna sp. (possibly P obovata?) There were many of these eggs and the above species of beetle on this single small sapling. ]
Peter Chew says late in summer all eggs are parasitised whereas earlier only some are... balance of nature?

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Mark Ridgway
Mark Ridgway 7 years ago

Thanks for the great information John.

John La Salle
John La Salle 7 years ago

Pteromalidae (in the Chalcidoidea).
There are a couple of Australian pteromalid genera that are known to specialise on eggs of Paropsinae (e.g. Neopolycystus, Enoggera), but it is difficult to identify pteromalids to genus even with preserved specimens and a good microscope.

Mark Ridgway
Mark Ridgway 7 years ago

...actually I think it was still doing eeny meeny miny mo.

Mark Ridgway
Mark Ridgway 7 years ago

The usual Sergio - no specs!! I didn't even know I had this wasp until I blew the pics up later 8(

Sergio Monteiro
Sergio Monteiro 7 years ago

Very, very good, Mark. Do you know how many eggs the wasp infected?

Mark Ridgway
Spotted by
Mark Ridgway

Victoria, Australia

Spotted on Feb 23, 2014
Submitted on Feb 24, 2014

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