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Aphis
Photo#356445
Copyright © 2009
R. Berg
Aphids on carrot stem -
Aphis
Alameda County, California, USA
December 4, 2009
Some of these have washed-out white markings. I'm guessing that they have been parasitized and will turn into mummies.
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Contributed by
R. Berg
on 4 December, 2009 - 8:41pm
Last updated 1 March, 2010 - 7:52am
Moved
Moved from
Black Bean Aphid
.
". . . is unlikely to be
Aphis fabae
due to the host plant being carrot. It might be
Aphis helianthi
, which likes carrot. It really cannot be identified without seeing specimens" (Andrew Jensen's comment).
…
Beatriz Moisset
, 1 March, 2010 - 7:52am
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Then what of these?
Found in the same place and previously identified as
A. fabae.
Some were on carrot, but the known hosts pole beans and chard (close relative of beets) were nearby. Is the species ID now iffy for these three photos?
…
R. Berg
, 1 March, 2010 - 10:36am
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May be
You may want to check with Andy. I have wondered about those too; but you make a very good point. From what I have read they are more common on beans and beets, but are also found on as many as 300 species of plants. And, then, there are those who think that it is not just a species but a complex of several species. So go and figure!
This year we'll have to start looking for them on
Euonymus
, their primary host, to be sure. Who wants to do the life cycle, with so many different generations on primary and secondary hosts? And probably all you want is nice healthy veggies in your garden :-)
…
Beatriz Moisset
, 1 March, 2010 - 11:44am
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