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Campopleginae
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Charops annulipes
Photo#559192
Copyright © 2011
John R. Maxwell
Charops annulipes
-
Ledges State Park, Boone County, Iowa, USA
July 31, 2011
Size: Maybe around 5 mm?
gathering_2011
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Contributed by
John R. Maxwell
on 7 August, 2011 - 2:29pm
Last updated 24 March, 2016 - 5:33pm
Thanks for the photo
of the wasp and the emergent hole. I found a cocoon and was wondering whether the emergent hole was the work of the cocoon maker or a parasitoid and now I can tell.
Question: by the dates of the photos it looks like the wasp emerged the same day you collected the cocoon, correct? I ask because I would love to find one of these before the wasp has emerged.
…
MJ Hatfield
, 15 January, 2017 - 5:36pm
Yes
I found it, took it back to the hotel, and found the adult had emerged.
…
John R. Maxwell
, 16 January, 2017 - 1:30pm
What are the chances??
You couldn't plan that.
I have discovered that collecting at the right time in the life cycle increases the odds of a successful adult emergence. Unfortunately, it's kind of hit and miss as to what and when we find to collect.
…
MJ Hatfield
, 16 January, 2017 - 3:38pm
Exit hole?
I guess that that is the exit hole. Nice finding. A minor detail: since the cocoon usually hangs from the thread, I would suggest rotating the image 180 degrees. It would be more natural. No big deal.
Wouldn't it be nice to catch one emerging?
Bob: there are several cocoons in the guide, in Campopleginae, that look almost exactly alike. Would they belong to the same genus or species?
…
Beatriz Moisset
, 13 August, 2011 - 6:48pm
I had tried rotating
the image, but the shadows are all wrong and it made the image look bad. Rotated 90 is not too bad, but the shadows still look a little off. I think this way also makes the hole the focus of the image, but I can rotate it if you want.
…
John R. Maxwell
, 13 August, 2011 - 10:28pm
Lookalikes
The thought that there were pics here of thread-suspended cocoons unassociated with adults that might be this species had occurred to me, but I hadn't persuaded myself to look for them (too preoccupied with reading about the human brain to have looked). We have only one species of
Charops
, but we definitely have more than one campoplegine species with a thread-suspended cocoon, as this one is defintely not
Charops
:
Not sure whether I would be able to determine the identity of the latter from the Smithsonian Collection, but I will hope to try. I would presume that thread-suspension evolved as a means of deterrence of some kinds of hyperparasitoids that attack cocoons (e.g.
Gelis
and some kinds of chalcidoids).
…
Bob Carlson
, 13 August, 2011 - 7:05pm
Moved
Moved from
Braconids and Ichneumons
.
…
Bob Carlson
, 7 August, 2011 - 3:20pm