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Beetle larvae

Beetle larvae
Cedar Rapids, Linn County, Iowa, USA
July 16, 2009
Size: 3 mm?
gathering of aphids on common milkweed, but are the white insects also aphids, and if so, why do they have the white growths?

Moved from Scymnini.

Moved from Scymnus.

Moved from ID Request.

Looks like...
Aphis asclepiadis, as per your other photos.

I'll use this photo to illustrate the ladybug larvae and the others to illustrate the aphids.

The white creatures
are ladybeetle larvae that eat aphids! Someone here can probably tell you which ladybeetle too.

mealybug destroyer
There are apparently lady beetle larvae that are called mealybug destroyers- -maybe we can raise them to adulthood.

Raise & photograph if possible!
There are very few reliably-identified larval photographs of Cryptolaemus or Scymnus lady beetles. Rearing these to adult and photographing them would be a valuable contribution to the guide.

I've been rearing lady beetle larvae all summer and have had no trouble keeping them housed and fed. I keep them in the clear plastic containers that takeout Chinese soup comes in, with small holes punched in the lids. I just drop some aphid-covered leaves into the container at least once a day; trying to keep the a stem of the aphid foodplant in water gets messy and can accidentally drown the insects.

The only problem I had was running out of aphids in my yard, but I've found them on sidewalk weeds and community gardens. People are always happy for me to come to their garden and take the aphids away!

leaning toward scymnus as my guess, will try to raise them.

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