Braconid-producing Rearing Experiment

Photos taken on August 4, 6, and 12 are a sequence of a rearing experiment. The painted lady caterpillar was taken for rearing. It had been feeding on Canada thistle. Observations of silky stands and frass led to its being observed. On August 6, 2019 what cocoon-like masses were found in the container and the caterpillar was dead. On August 12, 2019 about 25 braconid wasps eclosed from pupas in the cocoon-like structure. Wasps were about 3 mm in length.

Posted on 18 August, 2019 19:23 by gwmccormick gwmccormick

Observations

Photos / Sounds

What

Painted Lady (Vanessa cardui)

Observer

gwmccormick

Date

August 4, 2019 03:42 PM CDT

Description

Caterpillar of painted lady infected with parasitoids. See also observation 31148888.

Photos / Sounds

What

Painted Lady (Vanessa cardui)

Observer

gwmccormick

Date

August 6, 2019 03:46 PM CDT

Description

A white "cocoon" created by a painted lady caterpillar that houses pupas of a parasitoid, believed to be a braconid.

Photos / Sounds

Observer

gwmccormick

Date

August 12, 2019 04:01 PM CDT

Description

Parasitoid wasp of a caterpillar of a painted lady. The caterpillar had been "influenced" to produce a white silky cocoon, from which about 25 wasps eclosed. See also observation 31148888.

Specimens can be provided to anyone who wishes to attempt complete ID.

Comments

very interesting!

Posted by origamilevi about 2 years ago

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