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True Bugs, Cicadas, Hoppers, Aphids and Allies (Hemiptera)
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Aphidinae
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Macrosiphini
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Uroleucon
Photo#240603
Copyright © 2008
Scott Justis
Aphid Giving Birth -
Uroleucon
-
Norfolk, Virginia, USA
October 26, 2008
Size: ~1.5mm (est. for baby)
Prickly Wild Lettuce (Lactuca serriola) I believe, is the host plant.
Images of this individual:
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Contributed by
Scott Justis
on 18 November, 2008 - 11:28am
Last updated 13 December, 2009 - 8:01pm
Moved
Moved from
Uroleucon sonchellum
.
…
Charley Eiseman
, 7 December, 2009 - 9:36pm
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ID
This is a Uroleucon, but not sonchellum. The species ID is not certain. Also, this specimen is a very unusual brachypterous female.
…
Andrew Jensen
, 7 December, 2009 - 8:58pm
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Moved
Moved from
Aphids
. Again, not a 100% positive ID. The reference I'm using lists two species that feed on
Lactuca
.
Uroleucon sonchellum
is described as reddish brown, which these are, whereas your other
Lactuca
aphids are bright red and presumably are
U. pseudambrosiae
.
…
Charley Eiseman
, 14 October, 2009 - 12:04am
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Busy in the Aphid Dept....
:^) Hmmm... I might start shooting more of these little critters!
Thanks!
…
Scott Justis
, 14 October, 2009 - 12:21am
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Doing my best...
Right now I'm just going through and looking at all the red aphids, which almost all are turning out to be aster-feeding species in this genus. I'm still totally clueless about most other aphids... but images like yours, combined with host plant info, should be enough for IDs, if we can ever convince an
actual
aphid expert to visit BugGuide. So by all means, shoot away!
…
Charley Eiseman
, 14 October, 2009 - 12:27am
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Sow-thistle?
The grooved stem on this photo suggests it may be a species of sow-thistle (
Sonchus)
, as in
this example
.
…
John Pearson
, 22 November, 2009 - 10:49pm
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Here it is...
http://www.ppws.vt.edu/scott/weed_id/sonas.htm
Spiny Sow Thistle
Sonchus asper
…
Scott Justis
, 23 November, 2009 - 9:09am
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As it happens...
That change in plant ID doesn't change my guess for the aphid ID. The reference I'm using notes two species that feed on
Sonchus
:
U. sonchi
, which is brown, and
U. sonchellum
, which is reddish brown. Definitive ID would require a clear view of the antennae: length of antennal segment III greater than that of antennal segments IV and V combined in
U. sonchellum
; length of antennal segment III less than that of antennal segments IV and V combined in
U. sonchi
. Looks like an enlarged crop of your third image would show this. (This also assumes that there are no
Sonchus
-feeding species in Virginia beyond those found in Michigan, for which this key was made.)
…
Charley Eiseman
, 24 November, 2009 - 2:05am
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Let me check...
my archive. I know that I made quite a number of images of these aphids. I'll post a higher res. image if I have one.
…
Scott Justis
, 24 November, 2009 - 8:11am
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Added image
The added image may show enough detail for a specialist familiar with
Uroleucon
species to say which this is. Unfortunately, I'm not sure which of the little grooves represent actual segmentation of the antennae.
This page
indicates that
U. sonchi
antennae have yellow on them, though, so it seems like that species can be ruled out.
…
Charley Eiseman
, 1 December, 2009 - 5:08pm
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Your photos...
... are incredible. I hope I can be this good someday.
…
Carmen Champagne
, 18 November, 2008 - 4:40pm
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Thanks...
I think you're already there judging by your images I've seen recently!
…
Scott Justis
, 18 November, 2008 - 5:20pm
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