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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » True Bugs, Cicadas, Hoppers, Aphids and Allies (Hemiptera) » Plant-parasitic Hemipterans (Sternorrhyncha) » Aphidoidea » Aphids (Aphididae) » Aphidinae » Macrosiphini » Uroleucon » Subgenus Uroleucon (Uroleucon Subgenus Uroleucon) » Uroleucon pseudambrosiae
Photo#194150
Aphid ID - Uroleucon pseudambrosiae
Copyright © 2008 Scott Justis

Aphid ID - Uroleucon pseudambrosiae
Norfolk, Virginia, USA
June 22, 2008
Size: 2.5mm
Host plant looked like wild lettuce (Lactuca canadensis) but not positive. Plant has not flowered yet.

Images of this individual: tag all
Aphid ID - Uroleucon pseudambrosiae Aphid ID - Uroleucon pseudambrosiae
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Contributed by Scott Justis on 25 June, 2008 - 2:42pm
Last updated 23 November, 2009 - 11:15pm

Moved
Moved from Uroleucon. ID based on host plant, using a reference with a key to species of this genus in Michigan--i.e., the ID is not 100% positive but is highly likely.
… Charley Eiseman, 13 October, 2009 - 3:08pm login or register to post comments

 
Sow-thistle?
The flattened and grooved surface of this stem (assuming that's what it is) suggests it is a species of sow-thistle (Sonchus). See this stem as an example.
… John Pearson, 22 November, 2009 - 10:43pm login or register to post comments

 
Similar...
but I only see the spiny variety in VA. There were no spines on the leaves and the plant resembles Sonchus asper without the spines, of course.
… Scott Justis, 23 November, 2009 - 9:20am login or register to post comments

 
Food plant
I have been trying to take some shots of the plant itself. Many times I forget; but it is important to remember that, with many plant feeding insects, the host plant is important for an ID. And it is nice to know that there is a botanist among us who can give us a hand.
… Beatriz Moisset, 24 November, 2009 - 7:59am login or register to post comments

 
Funny thing happened..
as I remember. I went back to get an image of the plant and it was gone! I couldn't find a trace of it. This year, more of them appeared and I didn't see any aphids on them.
… Scott Justis, 24 November, 2009 - 8:34am login or register to post comments

 
Back to lettuce
Thanks for that information! No spines takes it out of Sonchus. Moreover, upon further perusal of manuals, the "groove" I mentioned earlier appears too wide to match up with other Sonchus stems. Let's leave this one as Lactuca canadensis after all.
… John Pearson, 23 November, 2009 - 10:34pm login or register to post comments

Moved
Moved from Aphids.
… Scott Justis, 22 April, 2009 - 8:53am login or register to post comments

Nice image
We have to get hold of an aphid specialist one of these days.
… Beatriz Moisset, 9 July, 2008 - 3:24pm login or register to post comments

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