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Photo#355932
Aphids on rose bush in December - Macrosiphum

Aphids on rose bush in December - Macrosiphum
Willow Grove, Montgomery County, Pennsylvania, USA
December 2, 2009

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Aphid eggs on rose bush in December - Macrosiphum Aphid eggs on rose bush in December - Macrosiphum Aphids on rose bush in December - Macrosiphum Aphids on rose bush in December - Macrosiphum Aphids on rose bush in December - Macrosiphum Aphids on rose bush in December - Macrosiphum Aphids on rose bush in December - Macrosiphum Aphids on rose bush in December - Macrosiphum

Moved
Moved from Aphids.

Update
The green eggs turned dark as of today, 12/4/09

i bet those black eggs are
parasitized! watch em..if the baby aphids are green the eggs should stay green. dont you think?

 
Not necessarily
Look at these.

 
Right
Aphid eggs are among the few eggs that are black when they're perfectly healthy. Neat to see the freshly laid green ones.

 
I Thought...
Aphids did the live birth thing?

 
They do both
Aphids have very intricate life cycles. They reproduce parthenogenetically and have live births for a number of generations. Then they switch to winged adults and in some cases they produce both males and females that mate, lay eggs, etc. It is even more complicated than I am describing it here. Plus, some spend a number of generations on one host and then they move to an entirely different host.

 
Yes
I'm not aware of any aphids that lay eggs during the growing season, but I think the vast majority overwinter as eggs on woody vegetation. I read somewhere that aphid eggs are an important winter food source for chickadess, etc., so I think about that now when I see birds gleaning bark for morsels of food.

 
Winter birds
I will be most grateful to chickadees and the like if they come and pick my rose bushes clean. They have to work hard for their food in winter. I wonder if bird feeders lead them to skip the aphid eggs with all sorts of unexpected consequences.
I didn't know about aphid eggs, but I knew that goldenrod gall flies are also a source of winter food for some birds.

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