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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 » Aphidini » Aphidina » Aphis » Subgenus Aphis (Aphis Subgenus Aphis) » Black Bean Aphid (Aphis fabae)
Photo#352475
Aphid - Aphis fabae
Copyright © 2009 R. Berg

Aphid - Aphis fabae
Alameda County, California, USA
November 15, 2009
Size: ~0.08 in., 2 mm
Walking on wooden garden structure. A poor image, added because the less common aphids are sketchily represented.
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Contributed by R. Berg on 16 November, 2009 - 1:35am
Last updated 4 December, 2009 - 10:34am

Moved
Moved from Aphids.
… Charley Eiseman, 4 December, 2009 - 10:34am login or register to post comments

 
Diagnostic criterion
Thanks to your new guide page, I know how to identify these aphids now. This species is the one that always faces to the right.
… R. Berg, 4 December, 2009 - 11:24am login or register to post comments

Are there
poplars nearby, by any chance?
...Never mind, I guess this is the species that lives on your chard:
… Charley Eiseman, 3 December, 2009 - 2:05am login or register to post comments

 
I guess it is!
They do look alike. The species with white dots is far less numerous on the chard (or anywhere else here) than a plain black species with a teardrop shape. I'll try to get a better photo now that I've benefited from JRM's tutorials in the photography forum.
… R. Berg, 3 December, 2009 - 10:58am login or register to post comments

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