Aphidius colemani

Started 2 months ago | Photos thread
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macrouser Senior Member • Posts: 2,112
Aphidius colemani

I have been checking the sow thistle for the aphid wasp.  Yesterday they had returned.  I spent 30 minutes on the ground, taking these photos.  I think I got some I am happy with.  They are all hand held single exposures.

Laying an egg.

Moving on to the next one.  A female can lay from 200 to 300 eggs in her life.

Some new hosts and shed skins.

One of the best focused ones.

I don't know if the wasp has very good depth perception.  I think she will need to get a little closer.

I found three wasps that morning.

One aphid mummy is clearly visible and what appears to be healthy aphids.

There are some aphid wings sticking up on the right side.  The aphids will continue to feed for two or three days after they have an egg implanted.  The larva eat the inside of the aphid.  The wasp larva will spin a cocoon inside the mummy before pupating and then emerging when mature.

People with an aphid problem in their crops or garden can buy packs of about 500 mummies.  As soon as they arrive, the pack is opened under the infected plants.

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