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Photo#1433913
Parasitic wasp on milkweed tussock moth - Mesochorus

Parasitic wasp on milkweed tussock moth - Mesochorus
Lancaster, Lancaster County, Pennsylvania, USA
September 1, 2017
Anyone have any ideas on which wasps parasitize these caterpillars?

Moved
Moved from ID Request.

Mesochorus (female)…
It does help, so thanx for the close-up. This is actually a female Mesochorus wasp, which also attacks this caterpillar species.

See reference here.

Parasitoid (female)…
Probably Meteorus, a braconid wasp that attacks this particular species, but would need a closer view of it to confirm.

 
Well thanks, Ross. Not sure
Well thanks, Ross. Not sure if this helps:


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