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Ants, Bees, Wasps and Sawflies (Hymenoptera)
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"Symphyta" - Sawflies, Horntails, and Wood Wasps
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Argid Sawflies (Argidae)
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Arge
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humeralis group (Arge humeralis group)
»
Poison Ivy Sawfly (Arge humeralis)
Photo#9870
Copyright © 2005
Bruce Marlin
Argid Sawfly -
Arge humeralis
DuPage County, Illinois, USA
July 21, 2004
This sawfly is a great mimic of this Braconid wasp:
At least I think the sawfly mimics the wasp; that's not for sure.
More, larger images at
Argid Sawfly
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Contributed by
Bruce Marlin
on 16 January, 2005 - 10:56pm
Last updated 13 March, 2023 - 5:16pm
That is a pretty good mimic,
That is a pretty good mimic, but I believe its antenna is a good deal shorter and its legs aren't hairy.
Assuming my mystery bug is a braconid wasp.
…
Dora Smith
, 24 October, 2023 - 10:07pm
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mimicry in braconids and sawflies
I ran across your comment looking at images of sawflies. I suspect the mimic is actually the Braconid--there are several with that pattern. I don't think the Braconids have a harsh sting, but I see some research out there that many sawflies have chemical defenses as larvae, for instance:
Endogenous toxins and the coupling of gregariousness to conspicuousness in Argidae and Pergidae sawflies
It would certainly make sense that some adults retain the chemical defenses of the larvae.
I'll post a note here if I find any more information.
…
Cotinis
, 12 June, 2020 - 6:39pm
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Argid Sawfly, I think
Family Argidae, I believe, antennae have three segments, last one very long.
Arge
as a widespread eastern genus, but there are others.
(Your other sawfly recently posted is
not
from the same family--antennae have many segments.)
Patrick Coin
Durham, North Carolina
…
Cotinis
, 17 January, 2005 - 6:57am
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Arge humeralis
I believe you are correct, Patrick. I found some images that are certainly the same insect, listed as Arge humeralis.
I have not found any other corroborating data as yet. Check it out:
Argid sawflies
…
Bruce Marlin
, 17 January, 2005 - 12:27pm
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Arge humeralis
I think you've got it right. Check out my
picture
that David R. Smith (Eric Eaton asked him to do sawfly ID's on my website last year)identified for me.
…
tom murray
, 23 November, 2005 - 9:14pm
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