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White Spongy cocoon? (spider egg case)

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spongy cocoon maybe spider egg case
by: Moni

Deb
Please compare these images on Bugguide to your cocoon and see if it matches. Looks similar to me but you have the cocoon in hand to compare it to.
http://bugguide.net/node/view/88393

Jo, it does not look like the Carolina nor the Chinese praying mantid egg case to me...it is too smooth of texture.

Cocoon
by: Jo

Praying Mantis pod. They will rid your aphids. My neighbor was destroying them until I told her what they were. Last year I was lucky enough to get some real good pictures of them hatching.

Cocoon
by: Moni

Deb
As I asked others who work with insects what it might be, it was suggested you could put a couple of the cocoons in a jar, add a stick for the moth to climb up on to expand wings, cover with cloth tied to keep tight and allow it to breathe and a wait to see what emerges. Take photos and then we can see what made the cocoons!

Here is a website about insect life cycles and how to rear them (click to link on rearing insects on right side bar) http://www.buglifecycle.com

Let us know what you get!!!

Cocoon
by: Moni

Deb
Not sure yet what moth/caterpillar formed your cocoons. The black specks may have been a little frass or droppings from the caterpillar as it turned into a pupa. Anyway the spongy cocoon is not from aphids nor homes for lady beetles.
The aphids or perhaps a stray caterpillar may have damaged the buds so they did not emerge into flowers. Also moisture, sun, temps and soil problems can cause the leaves to dry up...so it might not have been and insect if you did not actually see any on the plant. If you see something this year, take a pic and send it in!
There are very few pests of delphiniums...mostly aphids and spider mites.
Will keep looking for an answer to just what might have formed the cocoons.

Milk Weed Pods??
by: Jennifer Way

Deb, to me they look like Milkweed Pods, but to be honest, I have never seen them before in Alberta - last I saw was in Ontario, and it has been a while since I have been there now...

Keep me posted if you happen to find out what they are - I am now very curious!! :)

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