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Pseudorhyssa nigricornis
Photo#624029
Copyright © 2012
brian flaig
Ichneumon Wasp -
Pseudorhyssa nigricornis
-
Broadmoor, Massachusetts, USA
August 31, 1997
Any other information is appreciated.
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Contributed by
brian flaig
on 27 March, 2012 - 2:00pm
Last updated 1 July, 2021 - 11:10pm
Moved
Moved from
Rhyssa
.
This is a tricky one. Our eastern
Rhyssa
have complete loops around the eyes, but at least the posterior orbits are black here. Plus, I don't believe I'm seeing any prominent markings on the first 3 or 4 abdominal segments. That combined with the entirely unmarked sternum should rule out all eastern
Rhyssa
(as each has some markings or other that isn't present here). That should instead point towards
Pseudorhyssa
, which is the only species outside of Rhyssinae to have a ridged mesoscutum. Also like
Rhyssa
, it's a parasitoid of horntails. Other traits to be absolutely certain (differences in wing venation, groove on the second segment of the abdomen, and lack of a horn on the apical segment thereof) aren't visible from here, but it seems to be the only species left by process of elimination.
…
Jonathan Hoskins
, 1 July, 2021 - 11:10pm
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Moved
Moved from
ID Request
.
…
Bob Carlson
, 27 March, 2012 - 2:34pm
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Rhyssinae (female)…
See reference
here.
…
Ross Hill
, 27 March, 2012 - 2:14pm
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Thank you.
Thanks very much.
…
brian flaig
, 27 March, 2012 - 2:48pm
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