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Grammia larva - Apantesis

Grammia larva - Apantesis
Blackcomb Mountain, Squamish-Lillooet Regional District, British Columbia, Canada
August 23, 2014
This particular larva and a second, larger one were found on a trail in a sub-alpine meadow. This one was parasitized (ichneumond larva next to it) and the other one pupated but failed to produce an adult. I suspect they are Grammia but cannot take it further than that...

We have a nice collection of these on BugGuide
but we just don't know what to make of them??

We don't quite understand these yet,
but have seen some similar images identified as Acronicta
here and page 184(187) here

The link mentioned Acronicta cocoons as being very tough.. This cocoon is in fact very thin and easily torn by hand. I should take a picture the following days but unfortunately i don't have my dSLR camera with me.

Pupa alive!
I took the courage and lightly tapped on the pupa (through the paper-thin cocoon) and it wiggled. So it is alive (it overwintered successfully)! I will not disturb it any further but the moment it ecloses i will add pictures here and, hopefully, solve this mystery.

Excellent! Can't wait
At least we will know one!

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