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Phasgonophora sulcata - female

Phasgonophora sulcata - Female
Toronto, Ontario, Canada
July 18, 2008

Images of this individual: tag all
Phasgonophora sulcata - female Phasgonophora sulcata - female Phasgonophora sulcata - female

This native wasps preys on EAB
Hi David,

I agree these are stunning shots. If only everyone could see insects like this.

This may be a long shot but it looks to me like your wasp is sitting on the bark of an Ash tree. Do you know if that is the case? This wasp is a native parasitiod that is know to prey on the destructive Emerald Ash Borer (Agrilus planipennis). Considering EAB is only one of two Agrilus known to feed on Ash and the beetle is know in Toronto, your wasp may be in the process of hunting EAB when you captured this. The Canadian Forest Service is studying these wasps and would be keen to hear about a population battling against EAB in Toronto. If the wasp was shot on a live ash tree do you remember where the tree is. Fantastic shots keep them coming Thanks, Philip

p.s. your shot is a big deal because the wasp naturally preys on two species of Argilus beetles which feed in turn on Birch and Oak trees. The female you have photographed here may have made a remarkable leap (adapting to an invasive pest from Asia).

Wow! I'm very excited that my images may have revealed the presence of such an interesting and potentially important creature in Toronto. I very much appreciate all the info you provided Philip. I don't know if the tree was an ash, but I am very certain that the tree was NOT alive. It was a log left by the side of the trail that was cut down (I'm guessing by the city). It's likely long gone now either through decomposition or city removal. I'm at work right now, but when I get home, I'll check out the original photograph to see if more of the tree is visible. Maybe I can pick out the distinctive upside down V marks formed by Ash bark. It was along a forest edge, so Ash is a good possiblity, but I can't say more than that at this point.

Phasgonophora sulcata, female
Phasgonophora sulcata, female. Great pictures!

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