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Photo#357252
Aphids and rust - Aphis

Aphids and rust - Aphis
Waltham, Middlesex County, Massachusetts, USA
July 6, 2008
Size: 2 mm
Maybe the same plant as

Also tended by ants.

That may be a fly larva under the white skin.

Moved
Moved from Aphids.

ID
Aphis sp.

Rust?
Each of the two complete "rust" spots has a hole in it, which makes me think they might be abandoned blister galls caused by gall midges. Would have to know the host plant to see if that makes sense. The orange thing does seem like probably an Aphidoletes larva.

 
Host plant
This must be the host plant. Near water, not rooted in water.


 
Plant
If this is all the same plant -- the leaves on which I can just barely make out serrated margins, and those unripe fruits -- I'd guess chokeberry (Photinia; formerly Aronia; formerly Pyrus). Black (melanocarpa) rather than red, because there is no pubescence on the underside of the leaves. There were no known midge galls on chokeberry as of 20 years ago, but I still suspect that's what these are, for lack of a better candidate.

 
Agree with chokeberry
I looked at chokecherry (same shrubby growth-form, similar leaves, same family (Rosaceae), but in Prunus instead of Photinia), but the fruits of chokecherry are arranged in a raceme, not in a corymb as in chokeberry. Good call!

:-)
I believe the song is "Diamonds and Rust." Nice shot.

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